AuxMach-Self-Assessment PDF

Home / My Courses / DIAGNOSTIC TEST (1st Semester 24-25) / AUX MACH 1 - SELF ASSESSMENT / SELF TEST - BSMARE SI-BRAVO NSA DIAGNOSTIC TEST (1st Semester 24-25) Started on Thursday, October 10, 2024, 7:25 AM...

Home / My Courses / DIAGNOSTIC TEST (1st Semester 24-25) / AUX MACH 1 - SELF ASSESSMENT / SELF TEST - BSMARE SI-BRAVO NSA DIAGNOSTIC TEST (1st Semester 24-25) Started on Thursday, October 10, 2024, 7:25 AM State Finished Completed on Thursday, October 10, 2024, 8:45 AM Time taken 1 hour 20 mins Grade 93 out of 105 (89%) Question 1 Correct Mark 1 out of 1 Flag question How can friction losses in a pumping system be minimized? a. By using a higher speed pump b. By reducing the number of bends and ttings ✓ c. By increasing the size of the pipes d. By increasing the pump’s pressure output The correct answer is: By reducing the number of bends and ttings Question 2 Correct Mark 1 out of 1 Remove ag What does the term "rotary valve" refer to? a. A valve used in heating systems b. A valve that requires a quarter turn ✓ c. A valve that has multiple ports d. A valve that moves in a linear direction The correct answer is: A valve that requires a quarter turn Question 3 Correct Mark 1 out of 1 Flag question What tting allows access to the impeller for inspection in the case of impeller problems? a. Pressure relief valves b. Temperature sensors c. Couplings and anges ✓ d. Vibration sensors The correct answer is: Couplings and anges Question 4 Correct Mark 1 out of 1 Flag question What happens to the pressure of air as it passes through the multi-stage compressor system? a. The pressure increases at each stage until it reaches the desired level ✓ b. The pressure alternates between high and low levels at each stage c. The pressure decreases with each stage to cool down the air d. The pressure remains constant while the temperature uctuates The correct answer is: The pressure increases at each stage until it reaches the desired level Question 5 Correct Mark 1 out of 1 Flag question What happens to the temperature of the air as it is compressed in an air compressor? a. The temperature increases as the pressure increases ✓ b. The temperature remains constant throughout the process c. The temperature decreases as the air is compressed d. The temperature uctuates depending on the speed of the compressor The correct answer is: The temperature increases as the pressure increases Question 6 Correct Mark 1 out of 1 Flag question What happens to the velocity of air when it enters the diffuser of a centrifugal compressor? a. It remains constant b. It oscillates depending on air ow c. It increases as pressure decreases d. It decreases as pressure increases ✓ The correct answer is: It decreases as pressure increases Question 7 Incorrect Mark 0 out of 1 Flag question What happens when the outlet pressure exceeds the inlet pressure in a check valve? a. The valve closes b. The valve opens × c. The ow reverses d. The ow stays the same The correct answer is: The valve closes Question 8 Correct Mark 1 out of 1 Flag question What is a common application of pressure relief valves? a. Limiting air and steam pressure ✓ b. Mixing different uids c. Measuring gas volume d. Regulating water temperature The correct answer is: Limiting air and steam pressure Question 9 Correct Mark 1 out of 1 Flag question What is a common use for centrifugal pumps on ships? a. Fuel injection b. Bilge pumping ✓ c. Hydraulic control d. Oil drilling The correct answer is: Bilge pumping Question 10 Correct Mark 1 out of 1 Flag question What is a preventive step to avoid leakage in a pumping system? a. Ensuring vibration sensors are frequently calibrated b. Regular inspection and replacement of worn ttings and gaskets ✓ c. Raising the pump's operating pressure d. Installing additional ow meters to monitor the system The correct answer is: Regular inspection and replacement of worn ttings and gaskets Question 11 Correct Mark 1 out of 1 Flag question What is a primary advantage of a rotary vane compressor? a. Reduced need for cooling systems b. Compact size and low noise level ✓ c. High-pressure output for starting engines d. Large capacity and ability to handle high volumes of air e ciently The correct answer is: Compact size and low noise level Question 12 Correct Mark 1 out of 1 Flag question What is a typical sign of leakage in a pumping system? a. Temperature uctuations b. Increased ow rate c. Visible leaks or pressure drop ✓ d. Component misalignment The correct answer is: Visible leaks or pressure drop Question 13 Correct Mark 1 out of 1 Flag question What is the bene t of using a multi-stage compressor compared to a single-stage compressor? a. Higher pressure can be achieved with better e ciency in a multi-stage system ✓ b. Single-stage compressors are more e cient for high-pressure applications c. Multi-stage compressors are better suited for smaller, low-pressure tasks d. Single-stage compressors have fewer moving parts, making them more reliable The correct answer is: Higher pressure can be achieved with better e ciency in a multi-stage system Question 14 Incorrect Mark 0 out of 1 Flag question What is the difference between a lter and a strainer in a piping system? a. Strainers are always used in gas systems, while lters are used for liquids × b. Filters operate under high pressure, while strainers function at low pressure c. Strainers are used for regulating pressure, while lters prevent uid contamination d. Filters are used for ner ltration, while strainers remove larger particles The correct answer is: Filters are used for ner ltration, while strainers remove larger particles Question 15 Correct Mark 1 out of 1 Flag question What is the function of the discharge valve in an air compressor? a. To prevent air from leaking out of the system b. To regulate the pressure in the system c. To control the air ow into the compressor d. To release compressed air to the storage system ✓ The correct answer is: To release compressed air to the storage system Question 16 Correct Mark 1 out of 1 Flag question What is the key function of a suction valve in a reciprocating pump? a. To prevent uid from owing backward b. To reduce pipe friction c. To allow liquid into the pump ✓ d. To regulate pump speed The correct answer is: To allow liquid into the pump Question 17 Correct Mark 1 out of 1 Flag question What is the main difference between dynamic and displacement pumps? a. Dynamic pumps are used for gases, while displacement pumps are for liquids b. Displacement pumps operate only manually, while dynamic pumps need electricity c. Dynamic pumps rely on continuous ow, while displacement pumps use cyclic ow ✓ d. Displacement pumps are more e cient than dynamic pumps The correct answer is: Dynamic pumps rely on continuous ow, while displacement pumps use cyclic ow Question 18 Correct Mark 1 out of 1 Flag question What is the main disadvantage of a globe valve? a. High-pressure drop ✓ b. Di cult to operate c. Prone to leakage d. High cost The correct answer is: High-pressure drop Question 19 Incorrect Mark 0 out of 1 Flag question What is the main disadvantage of using a shell and tube heat exchanger compared to a plate heat exchanger? a. It has a lower heat transfer e ciency and requires more materials × b. It is more di cult to clean and maintain than other types c. It requires more space and has a higher frequency of maintenance d. It has a higher installation cost than other exchangers The correct answer is: It requires more space and has a higher frequency of maintenance Question 20 Correct Mark 1 out of 1 Flag question What is the main function of a displacement pump? a. To increase the uid’s temperature b. To lower the pressure in the system c. To move a constant volume of uid ✓ d. To create suction in a pipeline The correct answer is: To move a constant volume of uid Question 21 Correct Mark 1 out of 1 Flag question What is the main material used in the seats of ball valves? a. Copper b. Te on ✓ c. Glass d. Stainless steel The correct answer is: Te on Question 22 Correct Mark 1 out of 1 Flag question What is the main purpose of a butter y valve in a system? a. To mix different uids b. To regulate temperature c. To start, stop, and control ow ✓ d. To prevent back ow The correct answer is: To start, stop, and control ow Question 23 Correct Mark 1 out of 1 Flag question What is the main role of the rotor in a rotary pump? a. To create suction b. To prevent back ow c. To move uids mechanically ✓ d. To reduce uid temperature The correct answer is: To move uids mechanically Question 24 Correct Mark 1 out of 1 Flag question What is the main role of the valve trim? a. To maintain the valve's outer structure b. To regulate ow and pressure inside the valve ✓ c. To connect the actuator to the valve body d. To monitor the temperature inside the valve The correct answer is: To regulate ow and pressure inside the valve Question 25 Incorrect Mark 0 out of 1 Flag question What is the most common indicator of impeller problems in pumps? a. Reduced ow or pressure b. Temperature rise c. Unusual noise or vibration × d. Electrical failure The correct answer is: Reduced ow or pressure Question 26 Incorrect Mark 0 out of 1 Flag question What is the most critical indicator of wear in a positive displacement pump? a. Increase in noise level × b. Change in ow rate c. Decrease in suction e ciency d. Rise in system pressure The correct answer is: Decrease in suction e ciency Question 27 Incorrect Mark 0 out of 1 Flag question What is the primary bene t of using aluminum alloy in plate n heat exchangers? a. It has a lower cost than other metals used in heat exchangers b. It increases the corrosion resistance of the heat exchanger × c. It offers a higher heat transfer rate and reduces weight d. It is easier to manufacture than other materials The correct answer is: It offers a higher heat transfer rate and reduces weight Question 28 Correct Mark 1 out of 1 Flag question What is the primary function of a valve? a. To increase the temperature of uids b. To separate different types of gases c. To control the direction of uids ✓ d. To monitor uid color changes The correct answer is: To control the direction of uids Question 29 Correct Mark 1 out of 1 Flag question What is the primary function of the impeller in a pump system? a. To generate suction b. To separate air from liquid c. To move and accelerate uids ✓ d. To lter uids The correct answer is: To move and accelerate uids Question 30 Correct Mark 1 out of 1 Flag question What is the primary purpose of a check valve? a. To control direction of ow ✓ b. To reduce noise c. To mix different uids d. To regulate pressure The correct answer is: To control direction of ow Question 31 Correct Mark 1 out of 1 Flag question What is the purpose of a shut-off head when monitoring pumps? a. To measure suction pressure at zero ow ✓ b. To detect changes in vibration c. To prevent cavitation d. To maintain consistent uid temperature The correct answer is: To measure suction pressure at zero ow Question 32 Correct Mark 1 out of 1 Flag question What is the purpose of having safety cut-outs for high air temperature in an air compressor system? a. To prevent the system from leaking compressed air during operations b. To regulate the ow of air into the system to maintain balance c. To shut down the system to prevent overheating and potential damage ✓ d. To ensure that air is stored at a consistent pressure in the air bottle The correct answer is: To shut down the system to prevent overheating and potential damage Question 33 Correct Mark 1 out of 1 Flag question What is the role of a strainer in a pumping system? a. To control the ow rate b. To boost uid pressure c. To trap gases d. To lter out particles ✓ The correct answer is: To lter out particles Question 34 Correct Mark 1 out of 1 Flag question What is the role of expansion devices in a piping system? a. To lter contaminants from uids before they enter downstream equipment b. To regulate the pressure levels across different sections c. To act as a safety mechanism for excessive pressure build-up d. To allow for thermal movement within the system, preventing damage ✓ The correct answer is: To allow for thermal movement within the system, preventing damage Question 35 Correct Mark 1 out of 1 Flag question What is the signi cance of having safety devices in an air compressor system? a. To measure the lubrication levels in the system b. To prevent over-pressurization and system failure ✓ c. To increase the cooling e ciency of the air compressor d. To monitor the air ow and velocity in the system The correct answer is: To prevent over-pressurization and system failure Question 36 Correct Mark 1 out of 1 Flag question What is the term used for the energy needed to lift water to a certain height? a. Pressure b. Viscosity c. Flow Rate d. Head ✓ The correct answer is: Head Question 37 Incorrect Mark 0 out of 1 Flag question What kind of uid is typically handled by a screw pump? a. Fluids with solids × b. Gas-based uids c. High-viscosity uids d. Low-viscosity liquids The correct answer is: High-viscosity uids Question 38 Correct Mark 1 out of 1 Flag question What kind of trap is typically used in drainage systems on ships? a. P-trap ✓ b. Centrifugal trap c. Pressure trap d. Globe trap The correct answer is: P-trap Question 39 Correct Mark 1 out of 1 Flag question What might cause irregular temperature readings in a pumping system? a. Loose electrical connections b. A blockage in the ow meter or pressure gauge c. Overloading the pump or insu cient lubrication ✓ d. Misalignment of pump components The correct answer is: Overloading the pump or insu cient lubrication Question 40 Correct Mark 1 out of 1 Flag question What role do ba es play in a shell and tube heat exchanger? a. They prevent uids from leaking between the tubes and the shell b. They direct the uid ow to increase heat transfer e ciency ✓ c. They allow uids to pass in a single direction without turbulence d. They increase the surface area of the tubes for better heat exchange The correct answer is: They direct the uid ow to increase heat transfer e ciency Question 41 Correct Mark 1 out of 1 Flag question What safety feature prevents over-pressurization in air compressor systems? a. Cooling water system b. Air receiver c. Relief valve ✓ d. Suction valve The correct answer is: Relief valve Question 42 Correct Mark 1 out of 1 Flag question What should you inspect if a pump fails to start? a. Check electrical ttings and terminals for loose connections ✓ b. Tighten or replace all couplings and anges c. Adjust the ow meters to ensure accurate readings d. Measure the temperature to con rm the system is not overheated The correct answer is: Check electrical ttings and terminals for loose connections Question 43 Correct Mark 1 out of 1 Flag question What type of compressor is used to provide air for deck operations and cleaning? a. Topping-up air compressor b. Deck air compressor ✓ c. Main air compressor d. Emergency air compressor The correct answer is: Deck air compressor Question 44 Incorrect Mark 0 out of 1 Flag question What type of heat exchanger is commonly used in high-pressure applications like air compressors? a. Shell and tube heat exchanger × b. Coil cooler c. Direct contact heat exchanger d. Plate type heat exchanger The correct answer is: Coil cooler Question 45 Correct Mark 1 out of 1 Flag question What type of motion is used in a linear valve? a. Linear ✓ b. Circular c. Rotary d. Torsional The correct answer is: Linear Question 46 Correct Mark 1 out of 1 Flag question What typically causes leakage in a pump? a. Blocked suction pipes b. Gaps between the impeller and casing ✓ c. Overheated liquid d. Worn impellers The correct answer is: Gaps between the impeller and casing Question 47 Correct Mark 1 out of 1 Flag question When comparing a plug valve to a globe valve, which one is more suited for multi-port use and why? a. Globe valve because it offers better regulation b. Globe valve because of its lower pressure drop c. Plug valve because it allows multiple ports ✓ d. Plug valve because it's easier to operate The correct answer is: Plug valve because it allows multiple ports Question 48 Correct Mark 1 out of 1 Flag question Which component helps prevent overheating in a pumping system? a. Flow meter b. Vibration sensor c. Temperature sensor ✓ d. Pressure relief valve The correct answer is: Temperature sensor Question 49 Correct Mark 1 out of 1 Flag question Which component in a reciprocating pump creates the necessary linear motion to move uids? a. Rotor b. Valve c. Piston ✓ d. Shaft The correct answer is: Piston Question 50 Correct Mark 1 out of 1 Flag question Which component is responsible for providing the energy to run an air compressor? a. Air receiver b. Diffuser c. Power source or motor ✓ d. Lubricating oil pump The correct answer is: Power source or motor Question 51 Correct Mark 1 out of 1 Flag question Which device is frequently used to manage the expansion and contraction caused by temperature changes in piping systems? a. Check valve b. Filter c. Expansion joint ✓ d. Ball valve The correct answer is: Expansion joint Question 52 Incorrect Mark 0 out of 1 Flag question Which device is used to block solids but allow liquids to pass in shipboard drainage systems? a. Trap b. Expansion joint c. Filter × d. Pump The correct answer is: Trap Question 53 Correct Mark 1 out of 1 Flag question Which tting is used to measure system pressure in pumping systems? a. Vibration sensor b. Pressure gauge ✓ c. Flow meter d. Temperature sensor The correct answer is: Pressure gauge Question 54 Correct Mark 1 out of 1 Flag question Which tting monitors temperature in a pumping system? a. Flow meter b. Pressure gauge c. Temperature sensor ✓ d. Vibration sensor The correct answer is: Temperature sensor Question 55 Correct Mark 1 out of 1 Flag question Which material is most commonly used for piping due to its resistance to corrosion? a. Plastic b. Stainless steel ✓ c. Wood d. Aluminum The correct answer is: Stainless steel Question 56 Correct Mark 1 out of 1 Flag question Which method detects pump wear by analyzing the uid's thermal pattern? a. Pump Vibration Method b. Shut-off Head Method c. Head Flow Method d. Thermodynamic Method ✓ The correct answer is: Thermodynamic Method Question 57 Correct Mark 1 out of 1 Flag question Which of the following is not a type of check valve? a. Swing b. Tilting disc c. Pinch ✓ d. Piston The correct answer is: Pinch Question 58 Correct Mark 1 out of 1 Flag question Which of the following scenarios highlights the critical role of strainers in maintaining system e ciency? a. A piping system experiences temperature uctuations because expansion joints are not in place b. A piping system experiences reduced ow because debris has clogged downstream pumps ✓ c. A piping system cannot adjust pressure because a regulator is malfunctioning d. A piping system is unable to prevent gas leakage due to a faulty trap The correct answer is: A piping system experiences reduced ow because debris has clogged downstream pumps Question 59 Correct Mark 1 out of 1 Flag question Which of these valves creates the most energy loss in a system and why? a. Ball valve because of its soft seating material b. Butter y valve due to gas pockets c. Globe valve due to high-pressure drop and turbulence ✓ d. Gate valve because of its full bore design The correct answer is: Globe valve due to high-pressure drop and turbulence Question 60 Correct Mark 1 out of 1 Flag question Which part moves the uid in a reciprocating pump? a. Impeller b. Rotor c. Piston ✓ d. Valve The correct answer is: Piston Question 61 Correct Mark 1 out of 1 Flag question Which part of a centrifugal pump generates the required pressure? a. Piston b. Impeller ✓ c. Valve d. Rotor The correct answer is: Impeller Question 62 Correct Mark 1 out of 1 Flag question Why is friction loss important in a pump system? a. It shows how much electrical power is needed to run the pump b. It indicates how much energy is lost due to heat c. It determines how much liquid is lost in leaks d. It affects the overall e ciency of uid ow in the system ✓ The correct answer is: It affects the overall e ciency of uid ow in the system Question 63 Correct Mark 1 out of 1 Flag question Why is it important to follow installation guidelines when setting up an air compressor system? a. To monitor the cooling process more effectively b. To reduce the temperature of air being compressed in the system c. To ensure the system operates e ciently and safely without breakdowns ✓ d. To improve the quality of the compressed air delivered to the engine The correct answer is: To ensure the system operates e ciently and safely without breakdowns Question 64 Correct Mark 1 out of 1 Flag question Why is it important to select the appropriate material for piping systems in shipboard applications? a. To ensure the longevity and resistance to corrosion ✓ b. To decrease the overall cost of installation c. To minimize the weight of the piping system d. To increase the velocity of uid within the pipes The correct answer is: To ensure the longevity and resistance to corrosion Question 65 Correct Mark 1 out of 1 Flag question Why is lubrication needed for certain components in a pumping system? a. To ensure the smooth movement of parts ✓ b. To prevent pipe blockages c. To raise system pressure d. To slow the system's ow rate The correct answer is: To ensure the smooth movement of parts Question 66 Correct Mark 1 out of 1 Flag question Why is pressure monitoring essential in a pumping system? a. To lower the system's operating temperature b. To make sure the pump works at full capacity c. To boost the ow rate through the pump d. To detect deviations that indicate ine ciencies ✓ The correct answer is: To detect deviations that indicate ine ciencies Question 67 Correct Mark 1 out of 1 Flag question How can the performance of a heat exchanger be affected by fouling? a. It decreases the overall temperature difference between the uids b. It increases the pressure of the uid and reduces the ow rate c. It improves heat transfer by creating additional layers of insulation d. It reduces the e ciency by insulating the heat transfer surfaces ✓ The correct answer is: It reduces the e ciency by insulating the heat transfer surfaces Question 68 Correct Mark 1 out of 1 Flag question How do positive displacement compressors compress air? a. By controlling the air ow using pressure gauges b. By using rotating screws to move air through the system c. By trapping and reducing the volume of air to increase pressure ✓ d. By increasing the temperature of air as it passes through the system The correct answer is: By trapping and reducing the volume of air to increase pressure Question 69 Correct Mark 1 out of 1 Flag question How does a centrifugal pump increase the energy of a uid? a. By adding heat b. By compressing the uid c. By increasing the velocity ✓ d. By allowing gravity to do the work The correct answer is: By increasing the velocity Question 70 Incorrect Mark 0 out of 1 Flag question How does a diaphragm valve control uid ow? a. By adjusting air pressure × b. By using a needle to throttle ow c. By moving the diaphragm up and down d. By rotating the disc The correct answer is: By moving the diaphragm up and down Question 71 Correct Mark 1 out of 1 Flag question How does a plate n heat exchanger improve the e ciency of heat transfer? a. By reducing the need for additional cooling b. By reducing the number of plates to improve ow c. By allowing uids to ow without restrictions d. By increasing the surface area for heat exchange with ns ✓ The correct answer is: By increasing the surface area for heat exchange with ns Question 72 Correct Mark 1 out of 1 Flag question How does a shell and tube heat exchanger ensure maximum heat transfer? a. By using only a single large tube for better uid ow b. By mixing the uids to improve heat transfer e ciency c. By reducing the pressure on the uid being cooled d. By increasing surface area with multiple tubes ✓ The correct answer is: By increasing surface area with multiple tubes Question 73 Correct Mark 1 out of 1 Flag question How does the design of a globe valve lead to a signi cant pressure drop and what are the effects? a. It requires multiple turns to open, slowing down the process b. The change in ow direction causes turbulence, increasing energy loss ✓ c. The ow stays constant, reducing energy e ciency d. It provides a linear ow path, minimizing resistance The correct answer is: The change in ow direction causes turbulence, increasing energy loss Question 74 Correct Mark 1 out of 1 Flag question How is the pressure of air controlled in an air compressor system? a. Through the use of pressure relief valves and gauges ✓ b. By adjusting the air ow with diffusers c. By opening the discharge valve periodically d. By using additional cooling systems to regulate temperature The correct answer is: Through the use of pressure relief valves and gauges Question 75 Correct Mark 1 out of 1 Flag question How would a rise in pump vibration indicate a potential failure? a. It implies that the temperature of the pump is too high b. It signals that the impeller may be damaged or unbalanced ✓ c. It could indicate the presence of cavitation within the pump d. It suggests that the pump is nearing its maximum capacity The correct answer is: It signals that the impeller may be damaged or unbalanced Question 76 Correct Mark 1 out of 1 Flag question How would you solve a pump’s inability to prime? a. Re ll the pump casing with uid ✓ b. Reduce the pump’s suction pressure c. Increase the motor power d. Adjust the pump's impeller The correct answer is: Re ll the pump casing with uid Question 77 Correct Mark 1 out of 1 Flag question If a pump exhibits unusual vibrations, what should be your next action? a. Adjust the pressure to prevent system failure b. Check for misalignment using vibration sensors ✓ c. Increase the ow rate to stabilize the system d. Reduce the temperature to prevent overheating The correct answer is: Check for misalignment using vibration sensors Question 78 Correct Mark 1 out of 1 Flag question In a hydraulic system requiring high uid cleanliness, which tting would you choose for installation? a. Expansion joint to manage thermal expansion and contraction b. Strainer to remove larger solid particles from the uid c. Filter to remove contaminants and impurities from the uid ✓ d. Pressure relief valve to regulate the ow of uid The correct answer is: Filter to remove contaminants and impurities from the uid Question 79 Correct Mark 1 out of 1 Flag question What causes the uid to move in a positive displacement pump? a. Electrical impulses b. Rotational force c. A variable volume space ✓ d. Centrifugal force The correct answer is: A variable volume space Question 80 Correct Mark 1 out of 1 Flag question What could be the root cause of a pressure drop in a pumping system? a. High temperature levels within the pump b. Leaks or blockages in the piping system ✓ c. Insu cient lubrication in pump bearings d. Excessive vibration due to misalignment The correct answer is: Leaks or blockages in the piping system Question 81 Correct Mark 1 out of 1 Flag question What does a pressure regulator do in a piping system? a. To remove trapped air b. To maintain the outlet pressure ✓ c. To lter the incoming uids d. To increase system pressure The correct answer is: To maintain the outlet pressure Question 82 Correct Mark 1 out of 1 Flag question What does a vibration sensor monitor in a pumping system? a. Misalignment or mechanical issues ✓ b. Temperature increase in the system c. Pressure loss due to leakage d. Cavitation in the pump The correct answer is: Misalignment or mechanical issues Question 83 Correct Mark 1 out of 1 Flag question What does cavitation typically cause in a pump? a. Unusual noise or vibration ✓ b. Overheating of the pump c. Blockages in the piping system d. High pressure loss The correct answer is: Unusual noise or vibration Question 84 Correct Mark 1 out of 1 Flag question What does the acronym "NPSH" refer to? a. Nominal Pressure Standard Height b. Net Positive Suction Head ✓ c. Neutral Pressure Suction Height d. Net Pressure Suction Head The correct answer is: Net Positive Suction Head Question 85 Correct Mark 1 out of 1 Flag question What does the term ‘priming’ in pumps refer to? a. Starting the motor of the pump b. Filling the pump with uid ✓ c. Cleaning the pump after usage d. Adjusting pump speed The correct answer is: Filling the pump with uid Question 86 Correct Mark 1 out of 1 Flag question Which part of a piping system prevents debris from passing by using a mesh to lter particles? a. Pump b. Valve c. Trap d. Strainer ✓ The correct answer is: Strainer Question 87 Correct Mark 1 out of 1 Flag question Which pump type is suitable for thick, viscous liquids? a. Jet Pump b. Gear Pump ✓ c. Dynamic Pump d. Centrifugal Pump The correct answer is: Gear Pump Question 88 Correct Mark 1 out of 1 Flag question Which pump typically needs priming before use? a. Centrifugal Pump ✓ b. Screw Pump c. Gear Pump d. Rotary Pump The correct answer is: Centrifugal Pump Question 89 Correct Mark 1 out of 1 Flag question Which pump uses centrifugal force to operate? a. Gear Pump b. Centrifugal Pump ✓ c. Reciprocating Pump d. Screw Pump The correct answer is: Centrifugal Pump Question 90 Correct Mark 1 out of 1 Flag question Which type of air compressor has an eccentric rotor and spring-loaded vanes? a. Centrifugal compressor b. Reciprocating compressor c. Rotary vane compressor ✓ d. Rotary screw compressor The correct answer is: Rotary vane compressor Question 91 Correct Mark 1 out of 1 Flag question Which type of heat exchanger is ideal for compact installations with high heat transfer e ciency? a. Dynamic scraped surface heat exchanger b. Plate n heat exchanger ✓ c. Shell and tube heat exchanger d. Direct contact heat exchanger The correct answer is: Plate n heat exchanger Question 92 Correct Mark 1 out of 1 Flag question Which type of pump allows uid to enter along the axis and exit radially? a. Centrifugal Pump ✓ b. Rotary Pump c. Reciprocating Pump d. Gear Pump The correct answer is: Centrifugal Pump Question 93 Correct Mark 1 out of 1 Flag question Which type of pump moves uid using interlocking gears? a. Centrifugal Pump b. Jet Pump c. Gear Pump ✓ d. Diaphragm Pump The correct answer is: Gear Pump Question 94 Correct Mark 1 out of 1 Flag question Which type of valve uses a quarter turn to open or close? a. Ball valve ✓ b. Globe valve c. Gate valve d. Diaphragm valve The correct answer is: Ball valve Question 95 Correct Mark 1 out of 1 Flag question Which valve has a disc shaped like a plug? a. Globe valve b. Ball valve c. Butter y valve d. Plug valve ✓ The correct answer is: Plug valve Question 96 Incorrect Mark 0 out of 1 Flag question Which valve is commonly used for high-temperature applications? a. Plug valve b. Butter y valve c. Gate valve d. Ball valve × The correct answer is: Plug valve Question 97 Correct Mark 1 out of 1 Flag question Which valve is commonly used in systems with corrosive or brous uids? a. Ball valve b. Gate valve c. Globe valve d. Diaphragm valve ✓ The correct answer is: Diaphragm valve Question 98 Correct Mark 1 out of 1 Flag question Which valve is fast-acting and provides a very low-pressure drop? a. Ball valve ✓ b. Globe valve c. Gate valve d. Plug valve The correct answer is: Ball valve Question 99 Correct Mark 1 out of 1 Flag question Which valve is most commonly used in seawater piping systems? a. Butter y valve ✓ b. Plug valve c. Gate valve d. Ball valve The correct answer is: Butter y valve Question 100 Correct Mark 1 out of 1 Flag question Which valve would be the best option for a system where contamination is a concern and why? a. Ball valve because it is quick to act b. Plug valve because it resists contamination c. Diaphragm valve because few parts are exposed to the uid ✓ d. Check valve because it prevents back ow The correct answer is: Diaphragm valve because few parts are exposed to the uid Question 101 Correct Mark 1 out of 1 Flag question Why are check valves not suitable for systems with pressure uctuations? a. Because they can only be installed in one direction b. Because they don't provide good ow control c. Because quick actuation can damage the seat ✓ d. Because they cause a signi cant pressure drop The correct answer is: Because quick actuation can damage the seat Question 102 Correct Mark 1 out of 1 Flag question Why are gaskets important in plate type heat exchangers? a. They allow uids to mix for better heat transfer b. They prevent corrosion in the plates c. They increase the pressure inside the system d. They ensure the plates remain sealed to prevent uid leakage ✓ The correct answer is: They ensure the plates remain sealed to prevent uid leakage Question 103 Incorrect Mark 0 out of 1 Flag question Why are gate valves not recommended for throttling purposes? a. Because the valve seat and components get damaged quickly b. Because they don't allow for ow regulation × c. Because they are di cult to operate at high pressure d. Because they cause excessive pressure drops The correct answer is: Because the valve seat and components get damaged quickly Question 104 Correct Mark 1 out of 1 Flag question Why are globe valves ideal for systems that need ow control? a. Because they have a low-pressure drop b. Because they provide excellent ow regulation ✓ c. Because they are easy to install d. Because they have no moving parts The correct answer is: Because they provide excellent ow regulation Question 105 Correct Mark 1 out of 1 Flag question Why is counter ow more e cient than parallel ow in heat exchangers? a. Because it maintains a higher temperature difference throughout the exchanger ✓ b. Because it allows uids to ow perpendicular to each other c. Because it reduces the amount of pressure required d. Because it allows uids to mix more easily The correct answer is: Because it maintains a higher temperature difference throughout the exchanger Finish review ◄ SELF TEST - BSMARE SI-ALPHA Jump to... SELF TEST - BSMARE SI-CHARLIE NSA NSA ► Quiz navigation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 Show one page at a time Finish review Copyright © Lyceum of the Philippines University-Batangas 2016. All Rights Reserved. Website: www.lpubatangas.edu.ph Quick Links Student Portal - https://students.lpubatangas.edu.ph/Students LPU-B Digital Services Dashboard - https://myportal.lpubatangas.edu.ph Destiny Library Manager - https://destiny.lpubatangas.edu.ph Privacy Policy - https://lpubatangas.edu.ph/privacy-policy/ Built with Open LMS, a Moodle-based product. English - United States (en_us) Copyright © 2024 Open LMS, All Rights Reserved. Get the mobile app