Pipe Coaching - Top The Board PDF

## PIPE COACHING - TOP THE BOARD ### 1. - Is the most common dryer used which consist of rotating cylinder inside which the materials flow while getting in contact with hot gas. - **Ans. D. Rotary dryer** ### 2. - The total heat of the air is a function of - **Ans. A. WB temperature** ### 3. -...

## PIPE COACHING - TOP THE BOARD ### 1. - Is the most common dryer used which consist of rotating cylinder inside which the materials flow while getting in contact with hot gas. - **Ans. D. Rotary dryer** ### 2. - The total heat of the air is a function of - **Ans. A. WB temperature** ### 3. - Is the ratio of the mass of water-vapor in air and the mass of air if it is saturated is called: - **Ans. D. Relative humidity** ### 4. - The hands feel painfully cold when the skin temperature reaches - **Ans. B. 10 deg C** ### 5. - The refrigerant used in steam jet cooling is: - **Ans. D. Water** ### 6. - The total heat of the air is a function of - **Ans. A. WB temperature** ### 7. - Boiling point of Freon-12 at atmospheric pressure is: - **Ans. A. 21 oF** ### 8. - Which of the following is NOT a type of water cooled condenser in refrigeration? - **Ans. B. Double shell** ### 9. - Component of absorption refrigeration system in which the solution is cooled by cooling water. - **Ans. D. Absorber** ### 10. - Cascade refrigeration cycle is often used in industrial process where objects must be cooled to temperature below - **Ans. A. -46 OC** ### 11. - Type of refrigerant control designed to maintain a pressure difference while the compressor is operating. - **Ans. D. Capillary tube** ### 12. - As a rule of thumb, for a specified amount of compressed air, the power consumption of the compressor decreases by _ for each 30C drop in the temperature inlet air to the compressor. - **Ans. A. 1 percent** ### 13. - Modern way of detecting air compressor leak is by using - **Ans. C. Acoustic leak detector** ### 14. - For foundation of stacks, the maximum pressure on the soil is equal to the pressure due to the weight and the - **Ans. B. Wind movement** ### 15. - Foundation bolts of specified size should be used and surrounded by a pipe sleeve with an inside diameter of at least - **Ans. B. 3 times the diameter of anchor bolt** ### 16. - For multi stage compression of an ideal Brayton cycle, the back work ratio will - **Ans. B. decrease** ### 17. - Type of turbine that has a specific speed below 5. - **Ans. A. Impulse turbine** ### 18. - A high discharge type of turbine - **Ans. C. Propeller turbine** ### 19. - Use to minimize the speed rise due to a sudden load rejection - **Ans. D. jet deflector** ### 20. - Is the speed of a turbine when the head on the turbine is one meter. - **Ans. D. unit speed** ### 21. - Is a fluid property which refers to the intermolecular attraction by which the separate particles of the fluid arc held together. - **Ans. A. Cohesion** ### 22. - Which of the following is NOT the cause of black smoke in diesel engine? - **Ans. B. high compression pressure** ### 23. - Which of the following is not a method of starting a diesel engine? - **Ans. D. Using another generator** ### 24. - Two-stroke engine performs _ to complete one cycle. - **Ans. C. compression and power stroke** ### 25. - A type of geothermal plant used when there is a presence of brine extracted from underground. - **Ans. D. Binary geothermal plant** ### 26. - Is the most important safety device on the power boiler. - **Ans. C. Safety valve** ### 27. - During hydrostatic test, the safety valves should be - **Ans. A. removed** ### 28. - Where deaerating heaters are not employed, it is recommended that the temperature of the feed water be not less than - **Ans. A. 197 0C** ### 29. - Is a reaction during which chemical energy is released in the form of heat. - **Ans. D. Exothermic reaction** ### 30. - By reheating the steam in an ideal Ranking cycle the heat rejected will: - **Ans. A. increase** ### 31. - By increasing the boiler pressure in Rankine cycle the moisture content at boiler exit will: - **Ans. A. increase** ### 32. - Presently the highest steam temperature allowed at the turbine inlet is about - **Ans. C. 620 OC** ### 33. - Two most common gases employed in Stirling and Ericsson cycles are: - **Ans. C. Hydrogen and helium** ### 34. - In most common designs of Gas turbine, the pressure ratio ranges from - **Ans. B. 11 to 16** ### 35. - In Brayton cycle, the heat is transformed during what process? - **Ans. C. isobaric process** ### 36. - The fuel injection process in diesel engine starts when the piston - **Ans. C. approaches TDC** ### 37. - If the cut-off ratio of diesel cycle increases, the cycle efficiency will - **Ans. A. decrease** ### 38. - The fuel used in a power plant that is used during peak periods. - **Ans. C. liquid** ### 39. - Typical compression ratio of Otto cycle is - **Ans. B. 8** ### 40. - If Joule Thompson coefficient is equal to zero, then the process will become - **Ans. D. isothermal** ### 41. - If the fluid passed through a nozzle its entropy will: - **Ans. C. remains the same** ### 42. - Refrigerants consisting of mixtures of two or more different chemical compounds, often used individually as refrigerants for other applications. - **Ans. C. blends** ### 43. - Pairs of mating stop valves that allow sections of a system to be joined before opening these valves or separated after closing them. - **Ans. A. Check valve** ### 44. - An enclosed passageway that limits travel to a single path. - **Ans. A. corridor** ### 45. - For immediate dangerous to life or health (IDHL), the maximum concentration from which unprotected persons are able to escape within _ without escape-impairing symptoms or irreversible health. - **Ans. D. 30 minutes** ### 46. - Is also known as deaerator. - **Ans. A. open heater** ### 47. - _ as determined from internal volume of the space, as determined from internal volume of the space. - **Ans. B. Internal volume** ### 48. - A rest room or large hallway serving as a waiting room. - **Ans. D. lobby** ### 49. - A continuous and unobstructed path of travel from any point in a building or structure to a public way. - **Ans. B. mean of aggress** ### 50. - Any device or portion of the equipment used to increase refrigerant pressure. - **Ans. B. pressure-imposing element** ### 51. - The quantity of refrigerant stored at some point is the refrigeration system for operational, service, or standby purposes. - **Ans. C. liquid receiver** ### 52. - Secondary refrigerant is a liquid used for the transmission of heat, without a change of state, and having no flash point or a flash point above _ as determined from ASTM. - **Ans. A. 150 deg F** ### 53. - A service valve for dual pressure-relief devices that allows using one device while isolating the other from the system, maintaining one valve in operation at all times. - **Ans. A. three-way valve** ### 54. - Tubing that is unenclosed and therefore exposed to crushing, abrasion, puncture, or similar damage after installation. - **Ans. D. unprotected tubing** ### 55. - Refers to blends comprising multiple components of different volatile that, when used in refrigeration cycles, change volumetric composition and saturation temperature as they evaporate (boil) or condense at constant pressure. - **Ans. D. zeotropic** ### 56. - Is a premises or that portion of a premise from which, because they are disabled, debilitated, or confined, occupants cannot readily leave without the assistance of others. - **Ans. A. Institutional occupancy** ### 57. - Is one in which a secondary coolant is in direct contact with the air or other substance to be cooled or heated. - **Ans. B. Indirect open spray system** ### 58. - Refrigerant number R-744 is: - **Ans. D. Carbon dioxide** ### 59. - Refrigerant number R-1150 is: - **Ans. B. Ethene** ### 60. - Refrigerant number R-40 is: - **Ans. D. Chloromethane** ### 70. - When the air duct system serves several enclosed spaces, the permissible quantity of refrigerant in the system shall not exceed the amount determined by using the total volume of those spaces in which the airflow cannot be reduced to less than _ of its maximum when the fan is operating. - **Ans. A. one-quarter** ### 71. - The space above a suspended ceiling shall not be included in calculating the permissible quantity of refrigerant in the system unless such space is continuous and is part of the air return system. - **Ans. B. Plenums** ### 72. - Which of the following is NOT a possible location of service valve? - **Ans. D. outlet of condenser** ### 73. - A coil in series with evaporator that is use to prevent the liquid refrigerant entering the compressor. - **Ans. C. Drier loop** ### 74. - A type of valve connected from discharge of compressor directly to suction that is normally closed and will open automatically only if there is high discharge pressure. - **Ans. D. relief valve** ### 75. - Use to increase the capacity of condenser. - **Ans. B. desuperheating coils** ### 76. - Is use to subcooled the refrigerant from the condenser. - **Ans. A. liquid subcooler** ### 77. - Which of the following is NOT a part of low pressure side in refrigeration system? - **Ans. A. liquid line** ### 78. - Which of the following is NOT a part of high pressure side in refrigeration system? - **Ans. D. suction line** ### 79. - Which of the following is NOT a part of condensing unit? - **Ans. D. liquid line** ### 80. - By subcooling the refrigerant in refrigeration system, the compressor power per unit mass will - **Ans. C. remains the same** ### 81. - Superheating the refrigerant in refrigeration system without useful cooling, the refrigeration effect per unit mass will - **Ans. C. remains the same** ### 82. - By subcooling the refrigerant in refrigeration system, the specific volume at compressor suction will - **Ans. C. remains the same** ### 83. - Pressure loss due to friction at the condenser, the compressor power per unit mass will - **Ans. C. remains the same** ### 84. - Which of the following is NOT a type of air-cooled condenser? - **Ans. A. shell and tube** ### 85. - A type of refrigerant control typically used in household refrigeration. - **Ans. C. Capillary tube** ### 86. - Type of condenser that operates like a cooling tower. - **Ans. B. evaporative condenser** ### 87. - The major problem of heat pump is - **Ans. D. frosting** ### 88. - Dominant refrigerant used in commercial refrigeration system. - **Ans. D. R-502** ### 89. - Cascade refrigeration system are connected in - **Ans. A. series** ### 90. - Is use to heat up the solution partially before entering the generator in absorption refrigeration system. - **Ans. C. regenerator** ### 91. - The COP of actual absorption refrigeration system is usually - **Ans. A. less than 1** ### 92. - Sight glass is often located at: - **Ans. B. liquid line** ### 93. - Use to detects a vibration in current caused by the ionization of decomposed refrigerant between two opposite-charged platinum electrodes. - **Ans. A. Electronic detector** ### 94. - The ability of oil to mix with refrigerants - **Ans. D. miscibility** ### 95. - Joints and all refrigerants-containing parts of a refrigerating system located in an air duct carrying conditioned air to and from an occupied space shall be constructed to withstand a temperature of _ without leakage into the airstream. - **Ans. D. 7000F** ### 96. - Refrigerant piping crossing an open space that affords passageway in any building shall be not less than _ above the floor unless the piping is located against the œiling of such space and is permitted by the authority having jurisdiction. - **Ans. A. 2.2 m** ### 97. - Methyl chloride shall not be in contact with - **Ans. D. All of these** ### 98. - Shall not be in contact with halogenated refrigerants. - **Ans. C. magnesium** ### 99. - Are suitable for use in ammonia system. - **Ans. B. aluminum and its alloy** ### 100. - If a pressure-relief device is used to protect a pressure vessel having an inside dimension of 6 in or less, the ultimate strength of the pressure vessel so protected shall be sufficient to withstand a pressure at least _ the design pressure. - **Ans. B. 3 times** ### 101. - Seats and discs shall be limited in distortion, by pressure or other cause, to a set pressure change of not more than _ in a span of five years. - **Ans. B. 5%** ### 102. - Liquid receivers, if used, or parts of a system designed to receive the refrigerant charge during pump down charge. The liquid shall not occupy more than _ of the volume when temperature of the refrigerant is 900F. - **Ans. D. 95%** ### 103. - The discharge line (B4) shall be vented to the atmosphere through a _ fitted to its upper extremity - **Ans. D. diffuser** ### 104. - Convert fossil fuels into shaft work. - **Ans. D. Thermal power plant** ### 105. - Ultimate strength drops by 30% as steam temperature raises from _ for unalloyed steel. - **Ans. A. 300 to 400 оС** ### 106. - Recent practice limits steam temperature to - **Ans. A. 438 oC** ### 107. - In a closed feed water heater, the feed water pass through _ inside the tube. - **Ans. A. inside the tube** ### 108. - Is use if extracted steam upon condensation gets subcooled. - **Ans. D. drain cooler** ### 109. - Needs only single pump regardless of number of heaters. - **Ans. B. closed heater** ### 110. - Is also known as deaerator. - **Ans. A. open heater** ### 111. - Dissolve gases like _ makes water corrosive react with metal to form iron oxide. - **Ans. C. O2 and CO2** ### 112. - A cycle typically used in paper mills, textile mills, chemical factories, sugar factories and rice mills. - **Ans. A. Cogeneration cycle** ### 113. - Tranquil flow must always _ occur - **Ans. B. above the critical depth** ### 114. - A type of turbine employed where steam continuously extracted for process heating. - **Ans. D. Passout turbine** ### 115. - Which of the following is used for Binary cycle power generation for high temperature application. - **Ans. D. all of these** ### 116. - Critical temperature of mercury is - **Ans. D. 14600C** ### 117. - Critical pressure of mercury is - **Ans. B. 108 Mpa** ### 118. - Method used in converting heat directly to electricity by magnetism. - **Ans. C. Magnetohydrodynamic** ### 119. - Which of the following is NOT a material used for thermoelectric elements. - **Ans. C. Zinc telluride** ### 120. - A type of coal formed after anthracite. - **Ans. D. Graphite** ### 121. - Which of the following is lowest grade of coal? - **Ans. A. Peat** ### 122. - Which of the following helps in the ignition of coal? - **Ans. D. volatile matter** ### 123. - Is the ratio of fixed carbon and volatile matter. - **Ans. B. combustion ratio** ### 124. - A suspension of a finely divide fluid in another. - **Ans. C. Emulsion** ### 125. - A _ Contains 90% gasoline and 10% ethanol. - **Ans. A. Gasohol** ### 126. - Process used commercially in coal liquefaction. - **Ans. C. Fisher-Tropsch process** ### 127. - Is an organic matter produced by plants in both land and water. - **Ans. B. Biomass** ### 128. - In thermal power plant, induced draft fans are located at the - **Ans. B. foot of the stack** ### 129. - In thermal power plant, forced draft fans are installed at the - **Ans. D. inlet of the preheater** ### 130. - Known as drum less boiler. - **Ans. D. Once-through boiler** ### 131. - Reduces the steam temperature by spraying low temperature water from boiler drum. - **Ans. C. Desuperheater** ### 132. - Carbon dioxide can be removed by: - **Ans. B. aeration** ### 133. - _ Is often used to absorb silica from water. - **Ans. D. magnesium hydroxide** ### 134. - Presence of excess hydrogen ions makes the water - **Ans. A. acidic** ### 135. - PH of water varies with - **Ans. B. temperature** ### 136. - _ is usually maintained for boiler water to minimized corrosion. - **Ans. B. 9.5** ### 137. - What type of turbine that has a degree of reaction of 1/2? - **Ans. B. Francis turbine** ### 138. - The cooling water is made to fall in series of baffles to expose large surface area for steam fed from below to come in direct contact. - **Ans. D. Barometric condenser** ### 139. - Show the variation of river flow (discharge) with time. - **Ans. A. Hydrograph** ### 140. - Is an open channel erected on a surface above the ground. - **Ans. D. Flume** ### 141. - Type of turbine used up to 300 m head. - **Ans. D. Deriaz turbine** ### 142. - A turbine that has a diagonal flow. - **Ans. D. Deriaz turbine** ### 143. - Oil is atomized either by air blast or pressure jet at about - **Ans. B. 70 bar** ### 144. - Type of solid injection that use single pump supplies fuel under high pressure to a fuel header. - **Ans. A. Common rail injection** ### 145. - Water flow in diesel engine that is caused by density differential. - **Ans. A. Thermosiphon cooling** ### 146. - Type of lubrication system in diesel engine in which oil from pump is carried to a separate storage tank outside the engine cylinder and used for high capacity engine. - **Ans. D. Dry sump lubrication system** ### 147. - Produces extreme pressure differentials and violent gas vibration. - **Ans. B. Detonation** ### 148. - In a spark ignition engine, the detonation occurs near the - **Ans. A. end of combustion** ### 149. - In a compression ignition engine, the detonation occurs near the - **Ans. C. beginning of combustion** ### 150. - Morse test is use to measure the _ of multi-cylinder engine. - **Ans. B. Indicated power** ### 151. - Ignition delay can be minimized by adding _ to decrease engine knocking. - **Ans. C. Ethyl nitrate** ### 152. - For the submerged plane surface, the point on the surface where the resultant force acts is called the - **Ans. C. center of pressure** ### 153. - At any point in fluid at rest, the pressure is the same in all directions. This principle is known as: - **Ans. C. Pascal's Law** ### 154. - The hot-wire manometer is used to measure - **Ans. D. gas velocities** ### 155. - The pitot static tube measures - **Ans. A. the static pressure** ### 156. - The terminal velocity of a small sphere setting in a viscous fluid varies as the - **Ans. B. inverse of fluid viscosity** ### 157. - Pressure drag results from - **Ans. A. skin friction** ### 158. - The _ pressure coefficient is the ratio of pressure forces to: - **Ans. B. inertia forces** ### 159. - Which of the following head loss coefficient among the following types of entrance? - **Ans. C. reentrant** ### 160. - What waste water treatment method involves of algae from stabilization pond effluents? - **Ans. D. microscreening** ### 161. - The number of nozzles will depend on the quantity of steam required by the turbine. If nozzles occupy the entire arc of the ring, the turbine is said to have: - **Ans. D. full peripheral admission** ### 162. - Tandem compound units may also have two low-pressure castings that produces: - **Ans. C. triple flow** ### 163. - A type of turbine used for driving pumps, fans, and other auxiliaries in power plant commonly operate at exhaust pressures approximating atmospheric. - **Ans. D. Back pressure turbine** ### 164. - A governor with 0% regulation is termed as: - **Ans. A. isochronous governor** ### 165. - The speed regulation for most turbine-generators is adjustable from: - **Ans. A. 2 to 6%** ### 166. - Poppet valves of steam turbine are used for extraction pressures of: - **Ans. B. 20 to 150 psig** ### 167. - When both bearings of steam engine are on one side of the connecting rod, the engine is referred to as: - **Ans. B. side crank engine** ### 168. - When the valve in steam engine is in mid-position of its travel, it will cover the steam port by an amount known as: - **Ans. A. steam lap** ### 169. - A type of governor in steam engine that do not control the actual admission of steam to the cylinder, but controls the pressure of the steam. - **Ans. C. throttling governor** ### 170. - By inter-cooling using two stage compressor of Brayton cycle, the backwork ratio will: - **Ans. B. decrease** ### 171. - On dynamic similitude, the relation which represents the ratio of inertia force to pressure force is; - **Ans. C. Euler number** ### 172. - What is the maximum velocity in a sewer flowing full? - **Ans. A. 0.6 m/sec** ### 173. - A temporary structures constructed to exclude water from the site of the foundation during its excavation and construction is called: - **Ans. A. caisson** ### 174. - Which is not a physical characteristics of water? - **Ans. D. hardness** ### 175. - Which dam is best for weak foundation? - **Ans. C. buttress** ### 176. - What is the volume of water which will drain freely from the aquifer? - **Ans. A. specific yield** ### 177. - What is the line defined by the water level in a group of artesian wells? - **Ans. D. peizometric surface** ### 178. - Select the one that is a positive indication of pollution of a river. - **Ans. C. chloride content** ### 179. - Which instruments is used to measure humidity of the atmosphere continuously? - **Ans. C. hydrograph** ### 180. - Entrance losses between tank and pipe or losses through elbows, fittings and valves are generally expresses as a functions of: - **Ans. A. kinetic energy** ### 181. - The air that contains no water vapor is called - **Ans. C. dry air** ### 182. - In psychrometric chart, the constant-enthalpy lines coincide with constant-temperature lines at temperature - **Ans. C. below 500C** ### 183. - The amount of moisture in air depends on its - **Ans. C. temperature** ### 184. - The deep body temperature of a healthy person is maintained constant at - **Ans. B. 370C** ### 185. - Air motion also plays important role in - **Ans. C. human comfort** ### 186. - During simple heating and cooling process has a _ humidity ratio. - **Ans. B. decreasing** ### 187. - The _ follows a line of constant wet-bulb temperature on the psychrometric chart. - **Ans. B. condensive cooling process** ### 188. - A vapor which is not about to condense is called a - **Ans. C. superheated vapor** ### 189. - Passing from the solid phase directly into vapor phase is called - **Ans. C. sublimation** ### 190. - Robert Boyle observed during his experiments with a vacuum chamber that the pressure of gases is inversely proportional to their - **Ans. C. volume** ### 191. - _ is energy in transition. - **Ans. A. Heat** ### 192. - Is the mode of energy transfer between a solid surface and the adjacent liquid or gas which is in motion, and it involves combine effects of conduction and fluid motion. - **Ans. B. convection** ### 193. - Radiation is usually considered as - **Ans. A. surface phenomenon** ### 194. - Work is _ between the system and the surroundings. - **Ans. B. energy interaction** ### 195. - Is a process during which the system remains in equilibrium at all times. - **Ans. C. dynamic equilibrium** ### 196. - In the absence of any work interactions between a system and its surroundings, the amount of net heat transfer is equal - **Ans. A. to the change in the total energy of a closed system** ### 197. - The constant volume and constant pressure specific heats are identical for - **Ans. B. incompressible substance** ### 198. - The velocity of fluid is zero at the wall and maximum at the center because of the - **Ans. B. viscous effect** ### 199. - For steady flow devices, the volume of the control volume is - **Ans. C. constant** ### 200. - The work done in a turbine is _ since it is done by the fluid. - **Ans. A. positive** ### 201. - Reheating process in Brayton cycle, the turbine work will - **Ans. A. increase** ### 202. - Which of the following is the chemical formula of Ethanol? - **Ans. B. C2H60** ### 203. - Which of the following is the chemical formula of Heptane? - **Ans. A. C7H16** ### 204. - Which of the following is the chemical formula of Hexene? - **Ans. D. C6H12** ### 205. - Which of the following is the chemical formula of Toluene? - **Ans. C. C7H8** ### 206. - As the air passes through a nozzle, which of the following will increase? - **Ans. D. mach number** ### 207. - As the air passes through a diffuser, which of the following will decrease? - **Ans. D. mach number** ### 208. - As the air passes through a nozzle, which of the following will decrease? - **Ans. C. internal energy** ### 209. - As the air passes through a diffuser, which of the following will increase? - **Ans. A. density** ### 210. - After passing through a convergent-divergent nozzle, the temperature of air will: - **Ans. B. decrease** ### 211. - After passing through a convergent-divergent nozzle, the density of air will: - **Ans. B. decrease** ### 212. - After passing through a convergent-divergent nozzle, the mach number of air will: - **Ans. B. decrease** ### 213. - By increasing the temperature source of Carnot cycle, which of the following will not be affected? - **Ans. D. heat rejected** ### 214. - By decreasing the temperature sink of Carnot cycle, which of the following will not be affected? - **Ans. C. heat added** ### 215. - By superheating the refrigerant in vapor compression cycle with useful cooling, which of the following will increase? (Use per unit mass analysis) - **Ans. D. heat rejected from condenser** ### 216. - By superheating the refrigerant in vapor compression cycle with useful cooling, which of the following will decrease? (Use per unit mass analysis) - **Ans. D. Mass flow rate** ### 217. - By superheating the refrigerant in vapor compression cycle without useful cooling, which of the following will decrease? (Use per unit mass analysis) - **Ans. B. COP** ### 218. - By superheating the refrigerant in vapor compression cycle without useful cooling, which of the following will increase? (Use per unit mass analysis) - **Ans. C. Compressor power** ### 219. - By superheating the refrigerant in vapor compression cycle without useful cooling, which of the following will not be affected? (Use per unit mass analysis) - **Ans. C. Compressor power** ### 220. - By sub-cooling the refrigerant in vapor compression cycle at condenser exit, which of the following will increase? (Use per unit mass analysis) - **Ans. A. Refrigerating effect** ### 221. - By sub-cooling the refrigerant in vapor compression cycle at condenser exit, which of the following will decrease? (Use per unit mass analysis) - **Ans. D. mass flow rate** ### 222. - By increasing the vaporizing temperature in vapor compression cycle, which of the following will increase? (Use per unit mass analysis) - **Ans. B. COP** ### 223. - By increasing the vaporizing temperature in vapor compression cycle, which of the following will decrease? (Use per unit mass analysis) - **Ans. D. temperature difference between evaporator and compressor** ### 224. - By increasing the condenser pressure in vapor compression cycle, which of the following will increase? (Use per unit mass analysis) - **Ans. D. Compressor power** ### 225. - By increasing the condenser pressure in vapor compression cycle, which of the following will decrease? (Use per unit mass analysis) - **Ans. A. moisture content after expansion** ### 226. - If the pressure drop in the condenser increases in a vapor compression cycle, which of the following will increase? (Use per unit mass analysis) - **Ans. C. heat rejected in the condenser** ### 227. - If the pressure drop in the condenser increases in a vapor compression cycle, which of the following will decrease? (Use per unit mass analysis) - **Ans. B. mass flow rate** ### 228. - If the pressure drop in the condenser increases in a vapor compression cycle, which of the following will not be affected ? (Use per unit mass analysis) - **Ans. A. compressor power** ### 229. - If the pressure drop in the evaporator increases in a vapor compression cycle, which of the following will increase? (Use per unit mass analysis) - **Ans. A. Refrigerating effect** ### 230. - If the pressure drop in the evaporator increases in a vapor compression cycle, which of the following will decrease? (Use per unit mass analysis) - **Ans. D. COP** ### 231. - By lowering the condenser pressure in Rankine cycle, which of the following will decrease? (Use per unit mass analysis) - **Ans. C. heat rejected** ### 232. - By increasing the boiler pressure in Rankine cycle, which of the following will decrease? (Use per unit mass analysis) - **Ans. A. heat rejected** ### 233. - By superheating the steam to a higher temperature in Rankine cycle, which of the following will decrease? (Use per unit mass analysis) - **Ans. A. moisture content at the turbine exhaust** ### 234.