electrical engineering MCQs – Page 363

Practise multiple-choice questions from electrical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

electrical engineering Mcqs
1. economics of power generation2. analog electronics3. solid state switching circuits4. parallel circuits5. switchgear and protection6. op amp circuits7. transistor audio power amplifiers8. electrostatics9. heating and welding10. multi stage transistor amplifiers11. passive filters12. network theorems13. regulated d c power supply14. a c fundamentals circuits and circuit theory15. electromagnetic induction16. power electronics17. magnetism and electromagnetism18. transformers19. modulation and demodulation20. d c generators21. semiconductor theory22. single phase induction motors23. semiconductor diode24. hybrid parameters25. digital electronics26. oscillators27. earthing or grounding28. single stage transistor amplifiers29. d c motors30. transistor biasing31. amplifiers with negative feedback32. basic electrical33. electronic instruments34. synchronous motors35. field effect transistors fet36. magnetic circuit37. control systems38. industrial drives39. power generation40. series parallel circuits41. transistor tuned amplifiers42. electrical engineering materials43. rectifiers and converters44. integrated circuits45. scr silicon controlled rectifiers46. cables47. polyphase induction motors48. measurement and instrumentation49. transistors50. electrical machine design51. electrolysis and storage of batteries52. electric traction53. transmission and distribution
7241. Speed-time curve of main line service differs from those of urban and suburban services on following account_______________?
comments icon0

A. it has longer coasting period

B. it has longer free running period

C. all of the above

D. accelerating and braking periods are comparatively smaller

7242. Which of the following braking systems on the locomotives is costly ?
comments icon0
A. Regenerative braking on electric locomotives

B. Vacuum braking on diesel locomotives

C. All braking systems are equally costly

D. Vacuum braking on steam locomotives

7243. Tractive effort is required to_____________?
comments icon0

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
7244. Specific energy consumption is least in ________________ service?
comments icon0

A. urban

B. main line

C. suburban

7245. Specific energy consumption is affected by which of the following factors ?
comments icon0

A. Distance between stops

B. Gradient

C. Retardation and acceleration values

D. All of the above
7246. Electric locomotives in India are manufactured at______________?
comments icon0

A. Gorakhpur

B. Jamalpur

C. Bangalore

D. Chittranjan
7247. Overload capacity of diesel engines is usually restricted to_______________?
comments icon0

A. 20 percent

B. 2 percent

C. 10 percent

D. 40 percent

7248. Which of the following state capitals is not on broad gauge track ?
comments icon0

A. Lucknow

B. Chandigarh

C. Jaipur

D. Bhopal

7249. In case of locomotives the tractive power is provided by______________?
comments icon0

A. single cylinder double acting steam engine

B. single stage steam turbine

C. double cylinder, single acting steam engine

D. double cylinder, double acting steam engine
7250. For three-phase induction motors which of the following is the least efficient method of speed control ?
comments icon0

A. Cascade control

B. Rheostat control

C. Pole changing

D. Combination of cascade and pole changing

7251. In case of steam engines the steam pressure is_______________?
comments icon0
A. 10 to 15 kgf/cm2

B. 1 to 4 kgf/cm2

C. 25 to 35 kgf/cm2

D. 5 to 8 kgf/cm2

7252. The pulsating torque exerted by steam locomotives causes which of the following ?
comments icon0

A. All of the above

B. Jolting and skidding

C. Hammer blow

D. Pitching

7253. Locomotive having monomotor bogies________________?
comments icon0

A. has better coefficient of adhesion

B. are suited both for passanger as well as freight service

C. has better riding qualities due to the reduction of lateral forces

D. has all above qualities
7254. Energy consumption in propelling the train is required for which of the following?
comments icon0

A. Acceleration

B. Work against gravity while moving up the gradient

C. Work against the resistance to motion

D. All of the above
7255. The steam engine provided on steam locomotives is____________?
comments icon0
A. single acting non-condensing type

B. double acting non-condensing type

C. double acting condensing type

D. single acting condensing type

7256. Specific energy consumption becomes________________?
comments icon0

A. more with high train resistance

B. less if distance between stops is more

C. more on steeper gradient

D. all of the above
7257. The speed of a locomotive is controlled by_______________?
comments icon0
A. regulating steam flow to engine

B. flywheel

C. gear box

D. applying brakes 11.

7258. The number of passenger coaches that can be attached to a diesel engine locomotive on broad gauge is usually restricted to_____________/
comments icon0
A. 10

B. 17

C. 14

D. 5

7259. When a bogie negotiates a curve, reduction in adhesion occurs resulting in sliding. Thus sliding is acute when_______________?
comments icon0

A. wheel base of axles is more

B. degree of curvature is more

C. both A. and B.

D. none of the above

7260. The friction at the track is proportional to________________?
comments icon0

A. 1/speed

B. speed

C. none of the above

D. l/(speed)2