electrical engineering MCQs – Page 32

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 Review each marked answer and report any item that may be outdated or unclear.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
621. Multicore cables generally use________________?
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A. none of the above

B. square conductors

C. circular conductors

D. rectangular conductors

E. sector-shaped conductors
622. Which of the following power plant has highest Depreciation charges?
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A. Diesel plant

B. Hydroelectric plant

C. All have same

D. Thermal plant
623. Which of the following power plant has least efficiency_________?
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A. Hydro power plant

B. Nuclear power plant

C. Steam power plant

D. Diesel power plant

624. By which of the following systems electric power may be transmitted ?
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A. Overhead system

B. Underground system

C. Both A. and (b)

D. None of the above

625. Which of the following characteristics should the line supports for transmission lines possess?
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A. Longer life

B. High mechanical strength

C. Low cost

D. All of the above
626. The draught in locomotive boilers is produced by_____________?
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A. chimney

B. only motion of locomotive

C. steam jet

D. forced fan

627. The ideal load factor should be_____________?
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A. negative.

B. infinity.

C. unity

D. zero

628. Transmission voltage of 11 kV is normally used for distances up to_____km?
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A. 80100 km

B. 2025 km

C. 6070 km

D. 4050 km

629. The energy radiated by sun on a bright sunny day is approximately______________?
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A. 2 kW/m2

B. 1 kW/m2

C. 800 W/m2

D. 700 W/m2

630. Which of the following distribution systems is more reliable?
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A. Ring main system

B. All are equally reliable

C. Tree system

D. Radial system

631. High voltage transmission lines use__________________?
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A. suspension insulators

B. pin insulators

C. both A. and B.

D. none of the above

632. Under-feed stokers work best for _________ coals high in volatile matter and with caking tendency?
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A. semibituminous and bituminous

B. lignite

C. anthracite

633. In a step-down transformer, there is a change of 15 A in the load current. This results in change of supply current of_________________?
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A. 15 A

B. less than 15 A

C. more than 15 A

D. none of the above

634. For the same draught produced the power of induced draught fan as compared to forced draught fan is___________?
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A. more

B. same

C. less

D. not predictable

635. Which of the following device is used to measure vacuum?
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A. Barometer

B. Hygrometer

C. U-tube manometer

D. Venturi metre

636. If variable part of annual cost on account of interest and depreciation on the capital outlay is equal to the annual cost of electrical energy wasted in the conductors, the total annual cost will be minimum and the corresponding size of conductor will be most economical. This statement is known as___________________?
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A. Faradays law

B. none of the above

C. Ohms law

D. Kelvins law

E. Kirchhoffs law

637. By which of the following methods string efficiency can be improved?
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A. Grading the insulator

B. Using long cross arm

C. None of the above

D. Any of the above

E. Using a guard ring

638. Rateau steam turbine is______________?
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A. reaction steam turbine

B. pressure compounded impulse steam turbine

C. velocity compounded impulse steam turbine

D. pressure velocity compounded steam turbine

639. Aluminium has a specific gravity of___________?
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A. 7.8

B. 2.7

C. 4.2

D. 1.5

640. Galvanised steel wire is generally used as______________?
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A. stay wire

B. earth wire

C. structural components

D. all of the above