Realtime Electric Traction Multiple choice Questions and Answers pdf

21.    The efficiency of diesel locomotives is nearly
(a)     20 to 25 percent
(b)     30 to 40 percent
(c)     45 to 55 percent
(d)    60 to 70 percent
Ans: a

22.    The speed of a superfast train is
(a)     60 kmph 
(b)     75 kmph
(c)    100 kmph
(d)    more than 100 kmph
Ans: d

23.    The number of passanger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to
(a) 5 
(b) 10
(c) 14 
(d) 17
Ans: b

24.    Which of the following state capitals is not on broad gauge track ?
(a)     Lucknow 
(b)     Bhopal
(c)    Jaipur 
(d)     Chandigarh
Ans: c

25.    Which of the following is the advantage of electric braking ?
(a)    It avoids wear of track
(b)    Motor continues to remain loaded during braking
(c)    It is instantaneous
(d)    More heat is generated during braking
Ans: a

24.    Which of the following braking systems on the locomotives is 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
Ans: a

27.    Tractive effort is required to
(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
Ans: d

28.    For given maximum axle load tractive efforts of AC. locomotive will be
(a)    less than that of D.C. locomotive
(b)     more than that of D.C. locomotive
(c)    equal to that of D.C. locomotive
(d)    none of the above
Ans: b

29.    Co-efficient of adhesion reduces due to the presence of which of the following ?
(a)     Sand on rails 
(b)     Dew on rails
(c)     Oil on the rails
(d)     both (b) and (c)
Ans: d

30.    Due to which of the following co-efficient of adhesion improves ?
(a)     Rust on the rails
(b)     Dust on the rails
(c)    Sand on the rails
(d)    All of the above
Ans: d

Read More Questions:
Electric Traction MCQs part1
Electric Traction MCQs part2
Electric Traction MCQs part3
Electric Traction MCQs part4
Electric Traction MCQs part5
Electric Traction MCQs part6
Electric Traction MCQs part7
Electric Traction MCQs part8