Question 1

_______ locomotive has the highest operational availability.

Accepted Answer

A) Electric 
B) Diesel 
C) Steam 
D) none 
A) Electric 
B) Diesel 
C) Steam 
D) none A

Question 2

Speed-time curve of main line service differs from those of urban and suburban services on following account

Accepted Answer

A) it has longer free running period 
B) it has longer coasting period 
C) accelerating and braking periods are comparatively smaller 
D) all of the above 
A) it has longer free running period 
B) it has longer coasting period 
C) accelerating and braking periods are comparatively smaller 
D) all of the above D

Question 3

The friction at the track is proportional to

Accepted Answer

A) 1/speed 
B) l/(speed)2 
C) speed 
D) none of the above 
A) 1/speed 
B) l/(speed)2 
C) speed 
D) none of the above C

Question 4

In tramways which of the following motors is used ?

Accepted Answer

A) D.C.shunt motor 
B) D.C.series motor 
C) A.C.three phase motor 
D) AC.single phase capacitor start motor 
A) D.C.shunt motor 
B) D.C.series motor 
C) A.C.three phase motor 
D) AC.single phase capacitor start motor

Question 5

The rate of acceleration on suburban orurban services is restricted by the consideration of

Accepted Answer

A) Engine power 
B) Track curves 
C) Passenger Discomfort 
D) Track size 
A) Engine power 
B) Track curves 
C) Passenger Discomfort 
D) Track size

Question 6

The efficiency of diesel locomotives is nearly

Accepted Answer

A) 20 to 25 percent 
B) 30 to 40 percent 
C) 45 to 55 percent 
D) 60 to 70 percent 
A) 20 to 25 percent 
B) 30 to 40 percent 
C) 45 to 55 percent 
D) 60 to 70 percent

Question 7

The voltage used for suburban trains in D.C. system is usually

Accepted Answer

A) 12 V 
B) 24 V 
C) 220 V 
D) 600 to 750 V 
A) 12 V 
B) 24 V 
C) 220 V 
D) 600 to 750 V

Question 8

Tractive effort is required to

Accepted Answer

A) overcome the gravity component of train mass 
B) overcome friction, windage and curve resistance 
C) accelerate the train mass 
D) do all of the above 
A) overcome the gravity component of train mass 
B) overcome friction, windage and curve resistance 
C) accelerate the train mass 
D) do all of the above

Question 9

Which of the following is the disadvantage of electric traction over other systems of traction ?

Accepted Answer

A) Corrosion problems in the under-ground pipe work 
B) Short time power failure interrupts traffic for hours 
C) High capital outlay in fixed instal-lations beside route limitation 
D) Interference with communication lines 
A) Corrosion problems in the under-ground pipe work 
B) Short time power failure interrupts traffic for hours 
C) High capital outlay in fixed instal-lations beside route limitation 
D) Interference with communication lines

Question 10

In a steam locomotive electric power is provided through

Accepted Answer

A) overhead wire 
B) battery system 
C) small turbo-generator 
D) diesel engine generator 
A) overhead wire 
B) battery system 
C) small turbo-generator 
D) diesel engine generator

Question 11

The wheels of a train, engine as well as bogies, are slightly tapered to

Accepted Answer

A) reduce frietion 
B) increase friction 
C) facilitate braking 
D) facilitate in taking turns 
A) reduce frietion 
B) increase friction 
C) facilitate braking 
D) facilitate in taking turns

Question 12

The overall efficiency of steam locomotive is around

Accepted Answer

A) 5 to 10 percent 
B) 15 to 20 percent 
C) 25 to 35 percent 
D) 35 to 45 percent 
A) 5 to 10 percent 
B) 15 to 20 percent 
C) 25 to 35 percent 
D) 35 to 45 percent

Question 13

The specific energy consumption of a train depends on which of the following ?

Accepted Answer

A) Acceleration and retardation 
B) Gradient 
C) Distance covered 
D) All of the above 
A) Acceleration and retardation 
B) Gradient 
C) Distance covered 
D) All of the above

Question 14

method can bring the locomotive to dead stop.

Accepted Answer

A) Plugging braking 
B) Rheostatic braking 
C) Regenerative braking 
D) None of the above 
A) Plugging braking 
B) Rheostatic braking 
C) Regenerative braking 
D) None of the above

Question 15

The horsepower of steam locomotives is

Accepted Answer

A) upto 1500 
B) 1500 to 2000 
C) 2000 to 3000 
D) 3000 to 4000 
A) upto 1500 
B) 1500 to 2000 
C) 2000 to 3000 
D) 3000 to 4000

Question 16

Which of the following braking systems on the locomotives is costly ?

Accepted Answer

A) Regenerative braking on electric locomotives 
B) Vacuum braking on diesel locomo-tives 
C) Vacuum braking on steam locomo-tives 
D) All braking systems are equally costly 
A) Regenerative braking on electric locomotives 
B) Vacuum braking on diesel locomo-tives 
C) Vacuum braking on steam locomo-tives 
D) All braking systems are equally costly

Question 17

For diesel locomotives the range of horsepower is

Accepted Answer

A) 50 to 200 
B) 500 to 1000 
C) 1500 to 2500 
D) 3000 to 5000 
A) 50 to 200 
B) 500 to 1000 
C) 1500 to 2500 
D) 3000 to 5000

Question 18

For three-phase induction motors which of the following is the least efficient method of speed control ?

Accepted Answer

A) Cascade control 
B) Pole changing 
C) Rheostatic control 
D) Combination of cascade and pole changing 
A) Cascade control 
B) Pole changing 
C) Rheostatic control 
D) Combination of cascade and pole changing

Question 19

Which of the following drives is suitable for mines where explosive gas exists ?

Accepted Answer

A) Steam engine 
B) Diesel engine 
C) Battery locomotive 
D) Any of the above 
A) Steam engine 
B) Diesel engine 
C) Battery locomotive 
D) Any of the above

Question 20

For given maximum axle load tractive efforts of AC. locomotive will be

Accepted Answer

A) less than that of D.C.locomotive 
B) more than that of D.C.locomotive 
C) equal to that of 
D) C.locomotive 
A) less than that of D.C.locomotive 
B) more than that of D.C.locomotive 
C) equal to that of 
D) C.locomotive

_______ locomotive has the highest operational availability.

Speed-time curve of main line service differs from those of urban and suburban services on following account

The friction at the track is proportional to

In tramways which of the following motors is used ?

The rate of acceleration on suburban orurban services is restricted by the consideration of

The efficiency of diesel locomotives is nearly

The voltage used for suburban trains in D.C. system is usually

Tractive effort is required to

Which of the following is the disadvantage of electric traction over other systems of traction ?

In a steam locomotive electric power is provided through

The wheels of a train, engine as well as bogies, are slightly tapered to

The overall efficiency of steam locomotive is around

The specific energy consumption of a train depends on which of the following ?

method can bring the locomotive to dead stop.

The horsepower of steam locomotives is

Which of the following braking systems on the locomotives is costly ?

For diesel locomotives the range of horsepower is

For three-phase induction motors which of the following is the least efficient method of speed control ?

Which of the following drives is suitable for mines where explosive gas exists ?

For given maximum axle load tractive efforts of AC. locomotive will be

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Exam 11: Locomotives and Train Systems

_______ locomotive has the highest operational availability.

Speed-time curve of main line service differs from those of urban and suburban services on following account

The friction at the track is proportional to

In tramways which of the following motors is used ?

The rate of acceleration on suburban orurban services is restricted by the consideration of

The efficiency of diesel locomotives is nearly

The voltage used for suburban trains in D.C. system is usually

Tractive effort is required to

Which of the following is the disadvantage of electric traction over other systems of traction ?

In a steam locomotive electric power is provided through

The wheels of a train, engine as well as bogies, are slightly tapered to

The overall efficiency of steam locomotive is around

The specific energy consumption of a train depends on which of the following ?

method can bring the locomotive to dead stop.

The horsepower of steam locomotives is

Which of the following braking systems on the locomotives is costly ?

For diesel locomotives the range of horsepower is

For three-phase induction motors which of the following is the least efficient method of speed control ?

Which of the following drives is suitable for mines where explosive gas exists ?

For given maximum axle load tractive efforts of AC. locomotive will be

Electric Motors: Selection, Types, and Applications

Motor Selection and Applications in Various Industries

Motor for Various Applications

Motor and Drive System

Motor and Crane Technology: Understanding the Different Types and Applications

Electric Motors and Drives: Exploring Speed, Control, and Efficiency

Contactors, Motors, and Load Torques

Electrical Drives and Components

Motors and Drives for Industrial Applications

Motor and Power Systems

Traction Systems and Locomotive Performance

Filters