electrical engineering MCQs – Page 186

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 Review each marked answer and report any item that may be outdated or unclear.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
3701. Which one of the following can be taken as the measure of electric intensity ?
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A. q/VA

B. VF/A

C. F/A

D. V/A
3702. select the correct statement?
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A. they do not cross each other and group together in dielectric

B. they expand laterally and contract longitudinally

C. the electric lines of force have no physical existence

D. all the above statements are true
3703. 1 Coulomb = ___________ e.
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A. 610<sup>-19</sup>

B. 6.251018

C. 1.610<sup>19</sup>

D. 6.2510<sup>-18</sup>

3704. Solid Grounding is used for Voltages?
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A. Below 115 v

B. Above 11kv

C. Above 220 kv

D. Below 660 v
3705. A turbine is tripped when ?
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A. speed shoots up

B. steam flow gets clogged

C. inlet pressure increase

D. exhaust gets choked

3706. Farad is the unit of___________?
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A. capacitance

B. inductance

C. voltage

D. None of these

3707. Which of the following is the major consideration to evolve a good design?
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A. Compliance with performance criteria as laid down in specifications

B. All of the above

C. Durability

D. Cost

3708. select the only wrong statement?
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A. similar charges repel each other

B. dissimilar charges attract each other

C. repulsion is the sure test of electrification

D. an electrically neutral body is repelled both positively and negatively charged bodies
3709. In Hopkinson demand rate or two part tariff the demand rate or fixed charges are__________?
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A. dependent upon the energy consumed

B. dependent upon the maximum demand of the consumer

C. both A and B

D. neither A nor B

3710. For a consumer the most economical power factor is generally____________?
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A. 0.5 lagging

B. 0.95 lagging

C. 0.5 leading

D. 0.95 leading

3711. The knowledge of diversity factor helps in determining__________?
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A. average load

B. kWh generated

C. peak load

D. plant capacity
3712. Which of the following is the disadvantage of a synchronous condenser?
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A. High maintenance cost

B. All of the above

C. Continuous losses in motor

D. Noise

3713. The expected useful life of an hydroelectric power station is around_________________?
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A. 60 years

B. 100 years

C. 15 years

D. 30 years

3714. The load factor of domestic load is usually____________?
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A. 30 to 40%

B. 10 to 15%

C. 60 to 70%

D. 50 to 60%

3715. Which lightening stroke is most dangerous?
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A. Indirect stroke on conductor

B. Direct stroke on tower top

C. Direct stroke on ground wire

D. Direct stroke on line conductor
3716. Annual instalment towards depreciation reduces as rate of interest increases with______________?
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A. straight line depreciation

B. none of the above

C. reducing balances depreciation

D. sinking fund depreciation
3717. Generating capacity connected to the bus bars and ready to take load when switched on is known as____________?
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A. spinning reserve

B. cold reserve

C. hot reserve

D. firm power

3718. Most efficient plants are normally used as____________?
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A. base load plants

B. none of the above

C. peak load plants

D. either A. or (b)

3719. In a distribution system, in order to improve power factor, the synchronous capacitors are installed__________?
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A. either A. or (b)

B. at the sending end

C. none of the above

D. at the receiving end
3720. An alternator coupled to a __________ runs at slow speed, as compared to as compared to others.
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A. hydraulic turbine

B. gas turbine

C. diesel engine

D. steam turbine