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Questions and Answers
What is provided to protect the Loco from obstruction on Rails in AC/Diesel Locos?
What is provided to protect the Loco from obstruction on Rails in AC/Diesel Locos?
- Buffer
- Cattle Guard
- Rail Guard (correct)
- CBC
What type of relays are Safety Relays in Electric Locos?
What type of relays are Safety Relays in Electric Locos?
- Some DU and some DI type (correct)
- All DI type
- All DU and DI type
- All DU Type
What is the resistance of a conductor inversely proportional to?
What is the resistance of a conductor inversely proportional to?
- Length
- Area of cross-section (correct)
- Density
- Specific Resistance
What is the formula for Electric power?
What is the formula for Electric power?
What is the SI unit of resistance?
What is the SI unit of resistance?
What is the obstruction offered by a material of a conductor to the passage of electric current known as?
What is the obstruction offered by a material of a conductor to the passage of electric current known as?
What is the rate of flow of electric charge known as?
What is the rate of flow of electric charge known as?
What is the purpose of a Cattle Guard in AC/Diesel Locos?
What is the purpose of a Cattle Guard in AC/Diesel Locos?
What is the purpose of sand in locomotives?
What is the purpose of sand in locomotives?
Which of the following is an insulating material?
Which of the following is an insulating material?
What is the rating of a fuse wire expressed in?
What is the rating of a fuse wire expressed in?
Transformer ratings are given in which unit?
Transformer ratings are given in which unit?
What is used to collect current from OHE to AC loco?
What is used to collect current from OHE to AC loco?
What type of control is used for speed control in AC locomotives?
What type of control is used for speed control in AC locomotives?
What is measured using a hydrometer?
What is measured using a hydrometer?
When is Ohm's Law not applicable?
When is Ohm's Law not applicable?
What is the purpose of shunting contactors in a loco?
What is the purpose of shunting contactors in a loco?
What type of electrical braking system is used in AC locomotives?
What type of electrical braking system is used in AC locomotives?
During rheostatic braking, what does the traction motor work as?
During rheostatic braking, what does the traction motor work as?
What is the main transformer winding known as in an AC loco?
What is the main transformer winding known as in an AC loco?
How many tappings are provided in the main transformer of an AC loco?
How many tappings are provided in the main transformer of an AC loco?
What is the capacity of the transformer provided in WAG-5 locos?
What is the capacity of the transformer provided in WAG-5 locos?
What is the minimum battery voltage required for energization of AC locos?
What is the minimum battery voltage required for energization of AC locos?
What is the capacity of the transformers provided in WAG-7 / WAP-4 locos?
What is the capacity of the transformers provided in WAG-7 / WAP-4 locos?
What causes thick black smoke from the engine?
What causes thick black smoke from the engine?
When does the engine come to idle?
When does the engine come to idle?
What is the device used to transmit loco speed from wheels to the speedometer?
What is the device used to transmit loco speed from wheels to the speedometer?
How is traction motor load transferred to the Bogie frame?
How is traction motor load transferred to the Bogie frame?
What is the recommended height range for side buffers?
What is the recommended height range for side buffers?
What is the minimum distance required between the brake block and wheel in release position?
What is the minimum distance required between the brake block and wheel in release position?
How many pinion teeth are in a GE-752 TM?
How many pinion teeth are in a GE-752 TM?
What is the purpose of a safety device that brings the engine to idle?
What is the purpose of a safety device that brings the engine to idle?
The supercharged air in the air manifold is called?
The supercharged air in the air manifold is called?
What is the safety device provided in the LUBE oil system?
What is the safety device provided in the LUBE oil system?
When LLOB trips, the engine will?
When LLOB trips, the engine will?
Where are the MR cooling coils in WDG-4 located?
Where are the MR cooling coils in WDG-4 located?
What is the cooling water capacity in WDM-3A Locomotive?
What is the cooling water capacity in WDM-3A Locomotive?
In WDM-3A engine, the water pump is driven by?
In WDM-3A engine, the water pump is driven by?
When the headlight becomes defective, the speed of the train shall not exceed?
When the headlight becomes defective, the speed of the train shall not exceed?
What is the type of transmission in WDM-3 A locomotive?
What is the type of transmission in WDM-3 A locomotive?
During night when the headlight is not glowing, switch ON which light and work further?
During night when the headlight is not glowing, switch ON which light and work further?
What is the horsepower of WDG-3A Loco?
What is the horsepower of WDG-3A Loco?
Where is the battery knife switch located in ALCO locos?
Where is the battery knife switch located in ALCO locos?
What is the type of engine in ALCO Loco?
What is the type of engine in ALCO Loco?
When does the AFL system operate?
When does the AFL system operate?
In AC/Diesel Locos, what is provided to secure the Loco?
In AC/Diesel Locos, what is provided to secure the Loco?
What is the BP pressure in ALCO Locomotive?
What is the BP pressure in ALCO Locomotive?
In AC/Diesel Locos, what is provided to protect the Loco from bumping?
In AC/Diesel Locos, what is provided to protect the Loco from bumping?
Which item is used to reset AFL?
Which item is used to reset AFL?
What is the position of MUSD and ECS for engine cranking?
What is the position of MUSD and ECS for engine cranking?
In AC/Diesel Locos, what is provided to couple or un-couple?
In AC/Diesel Locos, what is provided to couple or un-couple?
In AC/Diesel Locos, what safety device is provided to keep alertness of LP/ALP?
In AC/Diesel Locos, what safety device is provided to keep alertness of LP/ALP?
In AC/Diesel Locos, what safety device is provided to know the speed?
In AC/Diesel Locos, what safety device is provided to know the speed?
In AC/Diesel Locos, what is provided to protect the control circuits?
In AC/Diesel Locos, what is provided to protect the control circuits?
In AC/Diesel Locos, what is provided to protect the Loco from animals?
In AC/Diesel Locos, what is provided to protect the Loco from animals?
In AC/Diesel Locos, what is used to couple or un-couple the coaches?
In AC/Diesel Locos, what is used to couple or un-couple the coaches?
What type of contactors are used in WDG-4?
What type of contactors are used in WDG-4?
What is the number of positions in the isolation switch of WDG-4 (ECS)?
What is the number of positions in the isolation switch of WDG-4 (ECS)?
What does it indicate if the air flow meter shoots up with a jerk while running?
What does it indicate if the air flow meter shoots up with a jerk while running?
What type of couplings does the WDM-2 expressor have?
What type of couplings does the WDM-2 expressor have?
What can cause excess brake cylinder pressure?
What can cause excess brake cylinder pressure?
What supplies power to the ECC coil through a breaker?
What supplies power to the ECC coil through a breaker?
What type of filters are used in the fuel oil system?
What type of filters are used in the fuel oil system?
What can cause wheel skidding?
What can cause wheel skidding?
What causes thick black smoke from the engine?
What causes thick black smoke from the engine?
When does the engine come to idle?
When does the engine come to idle?
What device transmits loco speed from wheels to the speedometer?
What device transmits loco speed from wheels to the speedometer?
How is traction motor load transferred to the Bogie frame?
How is traction motor load transferred to the Bogie frame?
What is the recommended height range for side buffers?
What is the recommended height range for side buffers?
What is the minimum distance required between the brake block and wheel in release position?
What is the minimum distance required between the brake block and wheel in release position?
How many pinion teeth are in a GE-752 TM?
How many pinion teeth are in a GE-752 TM?
What safety device brings the engine to idle?
What safety device brings the engine to idle?
What is the unit of S.F.C (Specific Fuel Consumption)?
What is the unit of S.F.C (Specific Fuel Consumption)?
Which of the following is not the safety item of Locomotive?
Which of the following is not the safety item of Locomotive?
In WDP-2 how many numbers of cam bushes are fitted in blocks?
In WDP-2 how many numbers of cam bushes are fitted in blocks?
Which of the following is the prime mover?
Which of the following is the prime mover?
At what temperature does the hot engine alarm sound in WDG-3A locos?
At what temperature does the hot engine alarm sound in WDG-3A locos?
What is the capacity of the lube oil dip stick gauge in WDG-3A locos?
What is the capacity of the lube oil dip stick gauge in WDG-3A locos?
In scavenging period, burnt gases are pushed out by?
In scavenging period, burnt gases are pushed out by?
What is the reason for Hot engine?
What is the reason for Hot engine?
What is the result of a reduction in BP pressure?
What is the result of a reduction in BP pressure?
What is the idle RPM of a WDG-4 engine?
What is the idle RPM of a WDG-4 engine?
What increases the copper content in lube oil?
What increases the copper content in lube oil?
What is the cause of hammering sound coming from the engine?
What is the cause of hammering sound coming from the engine?
Where is the lube oil cooler located in WDG-4 Locos?
Where is the lube oil cooler located in WDG-4 Locos?
Where is the ¾” Coc (BP COC) located in WDG-3A Locos?
Where is the ¾” Coc (BP COC) located in WDG-3A Locos?
What is the HP input to traction motors in WDG-4 Locos?
What is the HP input to traction motors in WDG-4 Locos?
What has replaced the conventional electronic type excitation system in new locos?
What has replaced the conventional electronic type excitation system in new locos?
How many teeth are in a split gear?
How many teeth are in a split gear?
What type of lubrication system is used in WDP-2 Loco?
What type of lubrication system is used in WDP-2 Loco?
What is the BHP of WDM-2 Loco?
What is the BHP of WDM-2 Loco?
What is the material of oil seal in ALCO TSC Rotor side?
What is the material of oil seal in ALCO TSC Rotor side?
How many cam lobs are in one cam segment?
How many cam lobs are in one cam segment?
What is the purpose of honey combing in a locomotive?
What is the purpose of honey combing in a locomotive?
What is the driving source for the water pump in a WDP-2 Loco?
What is the driving source for the water pump in a WDP-2 Loco?
How is the GE governor operated?
How is the GE governor operated?
Where is the Eddy current clutch located in a locomotive?
Where is the Eddy current clutch located in a locomotive?
What drives the turbo supercharger (TSC) in ALCO Locos?
What drives the turbo supercharger (TSC) in ALCO Locos?
What is the capacity of the fuel oil tank in WDG-3A Loco?
What is the capacity of the fuel oil tank in WDG-3A Loco?
Where is the fuel oil primary filter located in WDM-3A?
Where is the fuel oil primary filter located in WDM-3A?
What indicates the working of the Compressor Lube oil pump?
What indicates the working of the Compressor Lube oil pump?
Where is the fuel pump motor located in WDM-3A?
Where is the fuel pump motor located in WDM-3A?
Which governor is provided with LLOB in ALCO Locos?
Which governor is provided with LLOB in ALCO Locos?
How is the feed pipe charged?
How is the feed pipe charged?
What is the cause of thick black smoke from the engine?
What is the cause of thick black smoke from the engine?
When does the engine come to idle?
When does the engine come to idle?
What device transmits loco speed from wheels to the speedometer?
What device transmits loco speed from wheels to the speedometer?
How is traction motor load transferred to the Bogie frame?
How is traction motor load transferred to the Bogie frame?
What is the recommended height range for side buffers?
What is the recommended height range for side buffers?
What is the minimum distance required between the brake block and wheel in release position?
What is the minimum distance required between the brake block and wheel in release position?
How many pinion teeth are in a GE-752 TM?
How many pinion teeth are in a GE-752 TM?
What brings the engine to idle?
What brings the engine to idle?
How many teeth are in a split gear?
How many teeth are in a split gear?
What type of lubrication system is used in WDP-2 Loco?
What type of lubrication system is used in WDP-2 Loco?
What is the horsepower of WDM-2 loco?
What is the horsepower of WDM-2 loco?
What is the material of oil seal in ALCO TSC Rotor side?
What is the material of oil seal in ALCO TSC Rotor side?
How many cam lobs are in one cam segment?
How many cam lobs are in one cam segment?
What is the BHP of WDP-1 Loco?
What is the BHP of WDP-1 Loco?
How is the water pump driven in a WDP-2 Loco?
How is the water pump driven in a WDP-2 Loco?
What is the operation type of the GE governor?
What is the operation type of the GE governor?
In WDG-3A locos, what is the temperature in degrees centigrade at which the hot engine alarm (HEA) will come?
In WDG-3A locos, what is the temperature in degrees centigrade at which the hot engine alarm (HEA) will come?
What is the capacity of the lube oil dip stick gauge in WDG-3A locos?
What is the capacity of the lube oil dip stick gauge in WDG-3A locos?
What is the effect of a reduction in BP pressure in a locomotive?
What is the effect of a reduction in BP pressure in a locomotive?
What is the idle RPM of the engine in WDG-4 locos?
What is the idle RPM of the engine in WDG-4 locos?
Where is the lube oil cooler located in WDG-4 locos?
Where is the lube oil cooler located in WDG-4 locos?
In WDG-3A locos, where is the ¾” COC (BP COC) located?
In WDG-3A locos, where is the ¾” COC (BP COC) located?
What is the HP input to traction motors in WDG-4 locos?
What is the HP input to traction motors in WDG-4 locos?
What is the type of excitation system used in new locomotives?
What is the type of excitation system used in new locomotives?
What is the reason for a hot engine in a locomotive?
What is the reason for a hot engine in a locomotive?
What is the unit of Specific Fuel Consumption (S.F.C)?
What is the unit of Specific Fuel Consumption (S.F.C)?
Which component is responsible for increasing copper content in lube oil?
Which component is responsible for increasing copper content in lube oil?
Where is the eddy current clutch located in a locomotive?
Where is the eddy current clutch located in a locomotive?
How many cam bushes are fitted in blocks in a WDP-2 locomotive?
How many cam bushes are fitted in blocks in a WDP-2 locomotive?
What is not a safety item of a locomotive?
What is not a safety item of a locomotive?
What type of governor is provided in Loco A?
What type of governor is provided in Loco A?
What is the prime mover of a locomotive?
What is the prime mover of a locomotive?
What drives the turbo supercharger in an ALCO loco?
What drives the turbo supercharger in an ALCO loco?
What is the fuel oil tank capacity in a WDG-3A locomotive?
What is the fuel oil tank capacity in a WDG-3A locomotive?
During scavenging period, burnt gases are pushed out by what?
During scavenging period, burnt gases are pushed out by what?
Where is the fuel oil primary filter located in a WDM-3A locomotive?
Where is the fuel oil primary filter located in a WDM-3A locomotive?
What is the cause of a hammering sound coming from an engine?
What is the cause of a hammering sound coming from an engine?
Where is the fuel pump motor located in a WDM-3A locomotive?
Where is the fuel pump motor located in a WDM-3A locomotive?
What indicates the working of the compressor lube oil pump?
What indicates the working of the compressor lube oil pump?
What valve is used to charge the feed pipe?
What valve is used to charge the feed pipe?
Study Notes
AC/Diesel Locos
- Cattle Guard is provided to protect the Loco from obstruction on Rails.
Electric Locos
- Safety Relays are Some DU and some DI type relays.
Electric Power
- The resistance of a conductor is indirectly proportional to the Area of cross-section.
- The formula for Electric power is P=VI.
- The SI unit of resistance is Ohm.
- The obstruction offered by a material of conductor to the passage of electric current is known as Resistance.
- The rate of flow of electric charge is known as Electric current.
Insulating Materials
- Paper is an insulating material.
Ohm's Law
- Ohm’s Law is not applicable to Vacuum tubes.
Fuse Wire
- The rating of a fuse wire is always expressed in Amperes.
Transformer Ratings
- Transformer ratings are given in KVA.
Hydrometer
- Hydrometer is used for measuring the Specific gravity of electrolyte.
Locomotives
- Sand is used in Locomotives to avoid Wheel skidding and Wheel slipping.
- Current is collected from OHE to AC loco through Pantograph.
Speed Control
- The speed control method used in AC locomotive is Regenerative control.
- Shunting contactors are provided in the loco for To stabilize the speed.
Electrical Braking System
- The type of Electrical braking system used in AC locomotive is Regenerative.
Rheostatic Braking
- During Rheostatic braking, traction motor works as a Generator.
Main Transformer
- The main transformer winding is known as TFWR.
- In AC Loco, Main transformer is connected with 32 no.of tappings.
- In WAG-5 locos, the capacity of transformer provided is 5000 KVA.
- In WAG-7 / WAP-4 locos, the capacity of transformers provided is 5000 KVA.
Battery Voltage
- The minimum Battery voltage is required for energisation of AC locos is 90V.
Engine and Locos
- Engine given thick black smoke due to low BAP.
- Engine comes to idle through OST.
- Traction motor load is transferred on Bogie frame through Axle Box.
- Height of side Buffer should be maintained between 1105mm to 1030 mm.
Safety Devices
- Minimum distance between Brake block and Wheel in release position should be 5mm.
- No. of Pinion teeth in GE-752 TM is 17.
- To secure the Loco, Wooden wedges will be given.
- In AC/Diesel locos, to protect the loco from bumping, Rail guard is given.
- To keep alertness of LP/ALP, Vigilance control device is provided.
AC/Diesel Locos
- To know the speed, Speedo meter is provided.
- To protect the control circuits, MCB is provided.
- To protect the Loco from animals, Cattle Guard is provided.
- Cab lights are used in AC/Diesel locos.
Engine Cranking and AFL
- For engine cranking, MUSD and ECS position should be RUN, RUN.
- AFL system operates during D-1 emergency, ACP, GUARD brake application.
- SW-1& SW-2 are used to reset AFL.
- BP pressure in ALCO Locomotive is 5 kg/cm2.
- HP of WDG-3A Loco is 3600.
Transmission and Battery
- Type of transmission in WDM-3 A is DC-DC.
- Battery knife switch is located in Nose compartment.
- Type of engine in ALCO Loco is 4 Stroke.
Air System
- The super charged air in the air manifold is called BAP.
- Safety device provided in the LUBE oil system is GFOLR.
- When LLOB trips, the engine will come to IDLE.
Cooling System
- MR cooling coils in WDG-4 are located at Radiator room.
- Cooling water capacity in WDM-3A Locomotive is 910 liters.
- Water pump in WDM-3A engine is driven by Belts.
Head Light and Other
- When head light becomes defective, speed of the train shall not exceed 30 kmph.
- During night when head light is not glowing, switch ON Microprocessor control light and work further with 40 kmph.
- In WDG-4, power contactors are replaced with FS contactors.
- ECS isolation switch is having 2 positions.
Air Flow and Brakes
- While on run, if Air flow meter shoots up with jerk, it means Parting takes place.
- Excess brake cylinder pressure can cause Wheel skidding.
- ECC coil gets supply through MCB.
Fuel Oil System
- In Fuel oil system, Socks type filters are used.
Engine and Performance
- Engine given thick black smoke due to low BAP or defective CCE motor
- Engine idle RPM in WDG-3A locos is 360 and in WDG-4 locos is 469
- Engine comes to idle due to OST, ACP, or Low Lube oil indication
- Hammering sound coming from Engine is due to Exhaust valve bend, Fuel cam worn out, or X-head roller worn out
- Hot engine alarm (HEA) will come at 90 degrees centigrade in WDG-3A locos
Loco and Bogie
- Traction motor load is transferred on Bogie frame through Main Journal, Axle Box, or Helical Coil spring
- Height of side Buffer should be maintained between 1150 mm to 1000 mm
- Minimum distance between Brake block and Wheel in release position should be 10mm
Speed and Transmission
- Device used to transmit loco speed from wheels to the speedometer is called Tacho Generator or Axle Generator
- No. of Pinion teeth in GE-752 TM is 17
- HP input to Traction motors in WDG-4 Loco is 3726
- Conventional electronic type excitation system is replaced with a new system in new Locos
- Reduction in BP pressure causes Brakes release, slow release, or application
- Split gear has 30 teeth in new Locos
Lubrication and Cooling
- Lube oil dip stick gauge of WDG-3A has 400 liters capacity
- Lube oil cooler in WDG-4 Locos is located in Radiator room
- In WDP-2 Loco, Splash Type lubrication system is used
- Water pump is driven from Split gear or Extension shaft gear
Governors and Safety Devices
- GE governor is operated mechanically
- Eddy current clutch is located in Nose compartment
- LLOB is provided in GE Governor Loco
- OST, ACP, and LWS are safety devices in Loco
- Hot engine alarm (HEA) will come at 90 degrees centigrade in WDG-3A locos
Fuel and Turbo Charger
- Fuel oil tank capacity in WDG-3A Loco motive is 4000 liters
- Fuel oil primary filter in WDM-3A is located in Engine room
- Fuel pump motor in WDM-3A is located in Engine room
- Turbo super charger (TSC ) in ALCO Locos is driven by Exhaust gas
Engine and Performance
- Engine given thick black smoke due to low BAP or defective CCE motor
- Engine idle RPM in WDG-3A locos is 360 and in WDG-4 locos is 469
- Engine comes to idle due to OST, ACP, or Low Lube oil indication
- Hammering sound coming from Engine is due to Exhaust valve bend, Fuel cam worn out, or X-head roller worn out
- Hot engine alarm (HEA) will come at 90 degrees centigrade in WDG-3A locos
Loco and Bogie
- Traction motor load is transferred on Bogie frame through Main Journal, Axle Box, or Helical Coil spring
- Height of side Buffer should be maintained between 1150 mm to 1000 mm
- Minimum distance between Brake block and Wheel in release position should be 10mm
Speed and Transmission
- Device used to transmit loco speed from wheels to the speedometer is called Tacho Generator or Axle Generator
- No. of Pinion teeth in GE-752 TM is 17
- HP input to Traction motors in WDG-4 Loco is 3726
- Conventional electronic type excitation system is replaced with a new system in new Locos
- Reduction in BP pressure causes Brakes release, slow release, or application
- Split gear has 30 teeth in new Locos
Lubrication and Cooling
- Lube oil dip stick gauge of WDG-3A has 400 liters capacity
- Lube oil cooler in WDG-4 Locos is located in Radiator room
- In WDP-2 Loco, Splash Type lubrication system is used
- Water pump is driven from Split gear or Extension shaft gear
Governors and Safety Devices
- GE governor is operated mechanically
- Eddy current clutch is located in Nose compartment
- LLOB is provided in GE Governor Loco
- OST, ACP, and LWS are safety devices in Loco
- Hot engine alarm (HEA) will come at 90 degrees centigrade in WDG-3A locos
Fuel and Turbo Charger
- Fuel oil tank capacity in WDG-3A Loco motive is 4000 liters
- Fuel oil primary filter in WDM-3A is located in Engine room
- Fuel pump motor in WDM-3A is located in Engine room
- Turbo super charger (TSC ) in ALCO Locos is driven by Exhaust gas
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Description
Quiz questions on electric and diesel locomotives, covering safety features and technical aspects.
