Description : Draw neat labeled diagram of single phase AC locomotive showing its various equipments of power circuit and give function of each equipment used in power circuit.
Last Answer : Functions of equipment: 1) circuit breaker: disconnects the locomotive equipment from the supply in the event of fault in the equipment / loco. 2) On load tap changer, used to control the ... 6) Traction motor: operates as per the required operating characteristics to take on the traction load.
Description : Draw a neat sketch of earth fault protection of auxiliary circuit of electric loco. State the function of relay and isolating resistance.
Last Answer : Ans: Earth fault protection for auxiliaries in Loco: Function of relay: The earth fault occurring anywhere in the auxiliary circuit gets monitored by the relay which acts to trip the main CB. Function of ... star point to earth through a high resistance so that the relay operation is avoided.
Description : List any four types of electrical faults that may occur on electric locomotive with their causes.
Last Answer : Electric faults and causes in electric locomotive: Changes in the conditions of overloading leading to heating of winding , failure of insulation. Changes in the operating environments such as temperature, ... due to bad maintenance either due to lack of attention which should have been given .
Description : State the function of a contactor in a power circuit of locomotive. List different types of it and state one application of each.
Last Answer : Ans: Contactor in power circuit of locomotive is used to connect relevant sections for operation. Connecting or disconnecting the power circuit at different conditions of operation and at different locations. ... heavy power currents. 3) Cam & roller operated - used for group switching.
Description : Explain the need of maintenance of electric locomotive.
Last Answer : Need for maintenance : To correct the effects of Wearing out. To correct the effects of deterioration of locomotive component during normal use. In the long run (aging) performance ... availability of locomotive. Ensures reliability and operational readiness. Ensures safety by all means.
Description : State the function of following auxiliaries used in electric locomotive, i) Batteries ii ) Compressor iii ) Blower iv ) Exhauster
Last Answer : Ans: 1) Batteries - supply to run baby compressor which supplies air for initial raising of pantograph and closing of air blast circuit breaker. 2) Compressor - supply air for operation, control and ... blower, reactor blower, SCR blower, traction motor blower etc. 4) Exhausters - for vacuum brakes.
Description : Explain with necessary diagram the earth fault protection of power and auxiliary circuit.
Last Answer : i) Earth fault protection for power circuit in Loco: When any earth fault occurs in the traction power circuit the fault current flows through the relay coil as the battery negative is ... temporarily by isolating the relay which connects the star point to earth through a high resistance.
Description : What are the benefits or the advantages of waste heat recovery units (WHRU)? a) Reduced Pollution b) Reduced equipment sizes c) Reduced auxiliary energy consumption. d) All of the above
Last Answer : All of the above
Description : Benefits of Waste Heat Recovery a. Reduction in pollution b. Reduction in equipment sizes c. Reduction in auxiliary energy consumption d. All of the above
Last Answer : Ans:- d. All of the above
Description : List any two types of relays and contactors with their function used in AC locomotive.
Last Answer : Types of relays and their function in AC locomotive: 1) Buchholz Relay: To protect traction transformer from incipient faults. 2) Earth fault or Ground fault Relay: To protect the system against all kinds of ... is engaged with cam on shaft. Cam shaft can be moved by air engine or vane motor.
Description : Explain the surge protection of electric locomotive from i) Direct lightening stroke ii) Switching surges
Last Answer : i)Protection of Electric Locomotive From Direct Lightening Stroke: 1. The direct lightning strokes may strike on the overhead conductor on the roof of the locomotive. 2. To protect the ... reduce the steepness of the wave front and also help to absorb the energy in the resistance.
Description : Draw a neat labelled block diagram of AC electric locomotive. State the function of each part.
Last Answer : labelled diagram ofAC electric locomotive: Function of AC electric locomotive Parts: 1) Overhead contact wire: Supply of 1-ph, 25KV, 50Hz, AC is given to overhead conductor. 2) Current collecting ... mechanical power to run the train i.e. DC series motor which is used as traction motor.
Last Answer : In a steam locomotive electric power is provided through small turbo-generator.
Description : How does electric locomotive work?
Last Answer : Electric locomotives are powered by motors connected to battery or any supply . The electric supply is connected to a motor which drives set of gears connected to wheels.
Description : What type of electric motor is commonly used to start small auxiliary diesel engines? A. synchronous B. series C. shunt D. cage
Last Answer : Answer: B
Description : Explain with neat sketch overload protection for power circuit of locomotive.
Last Answer : Overload Protection for Power Circuit of Locomotive: 1. To protect the main power circuit from overload, the thermal overload relays are used. 2. The overload is sensed by the ... overload relay OLR3 operates for overload fault on traction motor due to the flashover of traction motors.
Description : Match the following: List-I List-II A. Varanasi I. Indian Rare Earths Ltd B. Koyali II. Hindustan Machine Tools Ltd C. Pinjore III. Diesel Locomotive Works D. Alwaye IV. Petro-Chemical Complex Codes: A B C D (a) I II III IV (b) IV III II I (c) III IV II I (d) III IV I II
Last Answer : Ans: (c)
Description : What is the purpose of auxiliary controller in substation?
Last Answer : The systems of substation auxiliaries ensure operation of substations providing internal consumers of substations with operating direct and alternating currents. Any breakdown (loss) of auxiliary systems ... whole substation, as well as serious problems during its subsequent putting into operation.
Description : function of equipment’s used in sub-stations : (i) Earth Switch (ii) Relay (iii) Lighting Arrester (iv) Auxiliary transformer
Last Answer : (i) Earth Switch It's function is to discharge the ground capacitance when line is open circuited for maintenance purpose by isolator.) Earthing switch is inter - locked with isolator from the safety point ... 3-ph, 4wire, 400V) to give supply to control room, area lighting, staff quarters etc,
Description : In ceiling fan the angle between auxiliary winding and main winding is . (A) 0 degree (B) 90 degree (C) 180 degree (D) 270 degree
Last Answer : The angle between the windings is 90 degrees
Description : A low-voltage protection circuit is used in electric motor starting equipment to _____________. A. trip circuit contactors when the motor overspeeds due to low voltage B. trip circuit ... voltage without manually resetting D. prevent the motor from restarting automatically on restoration of voltage
Last Answer : Answer: D
Description : The power of a locomotive is 315 kW and the total weight of the train is 2000 kN. If the track resistance is 15 N per kN, the maximum speed that the locomotive can attain on level track will be a.43 kmph b.83 kmph c.103 kmph d.107 dynes e.38 kmph
Last Answer : e. 38 kmph
Description : The power of a locomotive is 315 kW and the total weight of the train is 2000 kN. If the track resistance is qN per kN, the maximum speed that the locomotive can attain on level track will be a.103 kmph b.83 kmph c.107 dynes d.43 kmph e.63 kmph
Last Answer : e. 63 kmph
Description : A locomotive of weight 100 tonnes is attached to train of wagons weighing 1000 tonnes. The locomotive pulls the wagons with a constant velocity of 36 km/hour. When the coupling between the train and wagons breaks, the wagons roll on 95 m in ... would be a.0.36 m b.0.44 m c.0.77 m. d.0.5 m e.0.66 m
Last Answer : d. 0.5 m
Description : What was the the name of the first steam powered locomotive by George Stephenson?
Last Answer : Rocket*Skinny mini*
Description : Who was the first African American locomotive engineer for Houston Beltway Terminal?
Last Answer : Feel Free to Answer
Description : How much is a 2 cents Locomotive 1870 stamp worth?
Description : Diesel locomotive works of the Indian Railways is situated at- (1) Mumbai (2) Bangalore (3) Varanasi (4) Hyderabad
Last Answer : (3) Varanasi Explanation: India has the 4th largest coal reserves in the world. Indian mineral industry has contributed significantly to make the nation self-sufficient in coal. To meet the ... other users, the production trends in coal and lignite sectors have shown a remarkable increasing trend.
Description : Locomotive boiler tubes are made of __________ alloys. (A) Arsenic copper (B) Magnesium (C) Aluminium (D) Nickel
Last Answer : (A) Arsenic copper
Description : If is the speed of a locomotive in km per hour, g is the acceleration due to gravity, is the distance between running faces of the rails and is the radius of the circular curve, the required super elevation is (A) gV²/GR (B) Rg/GV² (C) GR/gV² (D) GV²/gR
Last Answer : (D) GV²/gR
Description : Which of the following is used to produce draught in the locomotive boilers? (A) Chimney (B) Induced draught fan (C) Forced draught fan (D) Steam jet arrangement
Last Answer : Option D
Description : Among which locomotive steam engines have the highest efficiency? a) 1 MW b) 2 MW c) 30 MW d) 660 MW
Last Answer : d) 660 MW
Description : Which of these is a stationary boiler? • Locomotive boiler • Marine boiler • Mobile boiler • Babcock Wilcox boiler
Last Answer : • Babcock Wilcox boiler
Description : Which of the following boiler is best suited to meet the fluctuating demand of steam....... A locomotive boiler. B Lancashire boiler C Cornish boiler D Babcock and wilcox boiler
Last Answer : A locomotive boiler.
Description : Which of the following is a water tube boiler........ A]Locomotive boiler B]Lancashire boiler C]Cornish boiler D]Babcock and wilcox boiler
Last Answer : in a Truss structure and nature of reactive force is in the nature of
Description : Which of the following boiler is best suited to meet the fluctuating demand of steam....... A]Locomotive boiler. B]Lancashire boiler C]Cornish boiler D]Babcock and wilcox boiler
Last Answer : A]Locomotive boiler.
Description : The draught in locomotive boilers is produced by a ___________ a) Chimney b) Centrifugal fan c) Steam jet d) All of the above
Last Answer : c) Steam jet
Description : Locomotive boiler has a) 137 fire tubes and 44 superheated tubes b) 147 fire tubes and 34 superheated tubes c) 157 fire tubes and 24 superheated tubes d) 167 fire tubes and 14 superheated tubes
Last Answer : c) 157 fire tubes and 24 superheated tubes
Description : Locomotive was invented by Peter Couper in: (a) 1820 (b) 1830 (c) 1835
Last Answer : (b) 1830
Description : RBG loading caters for maaaaximum axle load of…….tones for locomotive with trailing loadof…… tonnes/metre of track with maximum axle load of…….tonnes for wagons a)22.9,7.67,25 b)22.5,7.67,22.9* c)25,7.67,22.9, d)None of above
Last Answer : b)22.5,7.67,22.9*
Description : GML loading caters for maaaaximum axle load of…….tonnes for locomotive with trailing load of………tonnes/metre. a)22.9,7.67* b)22.5,7.67 c)25,7.67 d)None of above
Last Answer : a)22.9,7.67*
Description : A train locomotive whose mass is 1 x 106 kilograms is traveling EAST at a speed of 100 kilometers per hour. A NORTHERLY wind is applying a force of 100 Newtons on the locomotive. How much work is the wind doing ... 10 meters it travels? w) 0 joules x) 1,000 joules y) 10,000 joules z) 100,000 joules
Last Answer : ANSWER: W -- 0 JOULES
Description : Draw a neat sketch of ‘Locomotive coupler’ mechanism. Explain its working in brief.
Last Answer : Figure: Coupler Rod of Locomotive (Link AD = Link BC = Crank Link CD = Coupling Rod Link AB = Fixed Link = Frame) Working of Coupler Rod of Locomotive: It is an ... center distance between them. This mechanism is meant for transmitting rotary motion from one wheel to the other wheel.
Description : Explain protection of locomotive from overvoltage and under voltage
Last Answer : Protection of Locomotive From Overvoltage and Under Voltage: 1. For protection against over voltages the over voltage relay which is basically a potential transformer (PT) is used. 2. ... a relay triggering an alarm, which enables the power controller to react and take corrective measures.
Description : State the classification of locomotive.
Last Answer : Classification of Locomotive: A) Based on the types of service rendered: 1. Freight service for transportation of goods only. 2. Passenger service for transportation of passengers. 3. Mixed traffic ... the type of supply used: 1. Alternating current (AC) 2. Direct current (DC)
Last Answer : Locomotive having monomotor bogies has better coefficient of adhesion, are suited both for passanger as well as freight service, has better riding qualities due to the reduction of lateral forces.
Last Answer : Plugging braking method can bring the locomotive to dead stop.
Last Answer : For given maximum axle load tractive efforts of AC. locomotive will be more than that of D.C. locomotive.
Last Answer : The overall efficiency of steam locomotive is around 5 to 10 percent.
Last Answer : Electric locomotive has the highest operational availability.