Is a train a locomotive?

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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.

Answer : Plugging braking method can bring the locomotive to dead stop.

Answer : For given maximum axle load tractive efforts of AC. locomotive will be more than that of D.C. locomotive.

Answer : In a steam locomotive electric power is provided through small turbo-generator.

Answer : The overall efficiency of steam locomotive is around 5 to 10 percent.

Answer : Electric locomotive has the highest operational availability.

Answer : The speed of a locomotive is controlled by gear box.

Description : How does electric locomotive work?

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 is locomotive force?

Answer : Power for lighting in passanger coach, in a long distance electric train, is provided through individual generator of bogie and batteries.

Answer : The resistance encountered by a train in motion is on account of resistance offered by air, friction at the track, friction at various parts of the rolling stock.

Answer : The wheels of a train, engine as well as bogies, are slightly tapered to facilitate in taking turns.

Description : Specific energy consumption of an electric train is the ratio between (A) Specific energy output at driving wheels and efficiency of the traction motor (B) Specific energy output at driving wheels ... (D) Specific energy output at driving wheels and efficiency of the (motor + transmission gear)

Answer : Specific energy consumption of an electric train is the ratio between Specific energy output at driving wheels and efficiency of the (motor + transmission gear)

Description : Why is pulse train gating preferred over pulse gating? Explain with relevant circuit and waveforms, the pulse train gating of SCRs.

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

Answer : ANSWER: W -- 0 JOULES

Description : The average speed of a train is independent of   (a) Duration of steps (b) Acceleration and braking retardation (c) Distance between stops (d) Running time

Answer : The average speed of a train is independent of Duration of steps

Description : The decreasing pitch of the siren of a receding locomotive has what analog in astronomy?


Description : Draw a neat sketch of ‘Locomotive coupler’ mechanism. Explain its working in brief.

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 with neat sketch overload protection for power circuit of locomotive.

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 : Explain protection of locomotive from overvoltage and under voltage

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 : Explain the surge protection of electric locomotive from i) Direct lightening stroke ii) Switching surges

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 : State the classification of locomotive.

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)

Description : Draw a neat labelled block diagram of AC electric locomotive. State the function of each part.

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.

Description : List any two types of relays and contactors with their function used in AC locomotive.

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 : 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.

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 : Explain the need of maintenance of electric locomotive. 

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 : List any four types of electrical faults that may occur on electric locomotive with their causes.

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 : List any eight equipment used in auxiliary circuit of electric locomotive.

Answer : Ans: 1) Batteries , 2) Compressor , 3) Blowers , 4) Exhausters , 5) Pumps , 6) Cab ventilating fans.7) Locomotive heating (if any) , 8) Transformer oil cooling radiator. 9) head light , 10) Flasher light , 11) Marker light , 12) Engine Horn

Description : State the function of following auxiliaries used in electric locomotive, i) Batteries ii ) Compressor iii ) Blower iv ) Exhauster 

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 : State the function of a contactor in a power circuit of locomotive. List different types of it and state one application of each.

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 : The voltage collected by the pantograph of electric locomotive is (A) DC voltage (B) single-phase AC, 50 Hz (C) 3-phase AC, 50 Hz (D) single-phase AC, 25 Hz 

Description : In steam locomotive, electric power is provided through   (a) Battery system (b) Diesel engine generator (c) Overhead wire (d) Small turbo generator 

Description : What’s your preference: plane, train, boat, automobile, horse, or camel?

Description : Einstein’s Theory of Relativity says that A. mass can be converted into energy D. a clock moving at high speed ticks slower B. space can be curved E. all above C. a fast moving train appears shorter 

Answer : E. all above

Description : The following establishment (in which 10 or more employees are employed) is NOT covered for maternity benefits (as per the Maternity Benefit Act) a) tree plantation sector b) Indian Railway authorized private train-ticketing sector c) make-up and hair-dresser agency d) none of the above

Answer : d) none of the above  

Description : When the speed of a train moving on a circular track is doubled, the centripetal force acting on the train does one of the following. Does the force: w) remain the same x) increase by a factor of 2 y) increase by a factor of 4 z) increase by a factor of 8


Description : A train is traveling 20 kilometers per hour. It is .5 kilometers behind you. You want to beat the train to a crossing that is .5 kilometers away. How fast must you run?


Description : A toy train moves in a circle of 8 meters radius with a speed of 4 meters per second. What is the magnitude of the acceleration of the train?


Description : Have you ever wanted to hop on a random train and see where it gets you?

Description : How can I train my brain to be smarter?

Description : To Plato, the main role of education was to Options: A) Cultivate the personality of each individual B) Develop the power of contemplation C) Strengthen the power of perception D) Train each person for a vocation

Answer : B) Develop the power of contemplation 

Description : Suppose you are travelling in a train. All of a sudden you recognise your old student who is passing without any salutary mark. What will you think in such condition? Options: A) ... modern disrespectful trend in students D) You will introspect in relation to your students for further improvement

Answer : You will introspect in relation to your students for further improvement

Description : Synchronization is achieved by a timing device called a ................. which generates a periodic train of .................. (A) clock generator, clock pulse (B) master generator, clock pulse (C) generator, clock (D) master clock generator, clock pulse

Answer : Answer: A and D

Description : Plimsoll line is a reference line in a (1) Plane (2) Train (3) Ship (4) Submarine

Answer : Ship

Description : A man standing close to the platform at a railway station experiences a pulling force towards a fast moving train because of __________ . (1) gravitational force between train and man (2) illusion of the man (3) the centripetal force (4) pressure difference due to fast moving air in between

Answer : pressure difference due to fast moving air in between

Description : A man in a train moving with a constant velocity drops a ball on the platform. The path of the ball as seen by an observer standing on the platform is (1) A straight line (2) A circle (3) A parabola (4) None of these

Answer : A parabola

Description : A small gap is left at the joints of rails in a railway track to (1) avoid the tracks being distorted due to seasonal temperature variation (2) avoid the heating of tracks to high temperature (3) control the speed of train (4) keep the rails equidistant

Answer : avoid the tracks being distorted due to seasonal temperature variation

Description : Railway tracks are banked on curves so that (1) Necessary centrifugal force may be obtained from the horizontal component of the weight of the train (2) No frictional force may be produced between the ... the horizontal component of the weight of the train (4) The train may not fall down inwards

Answer : Necessary centripetal force may be obtained from the horizontal component of the weight of the train

Description : In a railway track, two rails are joined end to end with a gap in between thembecause (1) steel can be saved (2) accidents due to contraction in winter can be avoided (3) air-gaps are necessary for bearing the weight of running train (4) accidents due to expansion in summer can be avoided.

Answer :  accidents due to expansion in summer can be avoided.

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