electrical engineering MCQs – Page 25

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 Review each marked answer and report any item that may be outdated or unclear.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
481. Deaerative heating is done to_____________?
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A. heat the water

B. remove dissolved gases in the water

C. heat the air in the water

D. erative heating is done to

482. For aluminium, as compared to copper, all the following factors have higher values except:
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A. co-efficient of linear expansion

B. specific volume

C. resistance per unit length for same cross-section

D. electrical conductivity
483. Which of the following relays is used on long transmission lines?
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A. None of the above

B. Mhos relay

C. Impedance relay

D. Reactance relay

484. The effect of corona can be detected by___________?
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A. faint luminous glow of bluish colour

B. all of the above

C. presence of ozone detected by odour

D. hissing sound

485. When an alternator connected to the bus-bar is shut down the bus-bar voltage will___________?
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A. remain unchanged

B. fall

C. none of the above

D. rise

486. Belt conveyer can be used to transport coal at inclinations upto____________?
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A. 90

B. 30

C. 80

D. 60

487. Which of the following are the constants of the transmission lines ?
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A. Resistance

B. Capacitance

C. Inductance

D. All of the above
488. The material commonly used for sheaths of underground cables is______________?
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A. copper

B. iron

C. lead

D. rubber

489. The minimum clearance between the ground and a 220 kV line is about_________________?
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A. 10.5 m

B. 5.5 m

C. 4.3 m

D. 7.0 m
490. Which of the following is not a constituent for making porcelain insulators ?
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A. Quartz

B. Kaolin

C. Felspar

D. Silica
491. Curtis turbine is_____________?
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A. pressure velocity compounded steam turbine

B. velocity compounded impulse steam turbine

C. pressure compounded impulse steam turbine

D. reaction steam turbine

492. The draught which a chimney produces is called_____________?
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A. forced draught

B. balanced draught

C. induced draught

D. natural draught
493. 310 km line is considered as_______________?
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A. a medium line

B. any of the above

C. a long line

D. a short line

494. The pressure on the two sides of the impulse wheel of a steam turbine_____?
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A. is same

B. increases from one side to the other side

C. decreases from one side to the other side

D. is different

495. In case of impulse steam turbine_____________?
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A. there is enthalpy drop in nozzles

B. none of the above

C. there is enthalpy drop only in moving blades

D. there is enthalpy drop in fixed and moving blades

496. In coal preparation plant, magnetic separators are used to remove___________?
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A. iron particles

B. sand

C. clinkers

D. dust

497. The fuel used in nuclear reactor is_____________?
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A. uranium

B. all of the above

C. radium

D. cadmium

498. Diesel power plant are generally used as___________?
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A. base load plant

B. peak load plant

C. none of the above

D. standby plant

499. In AC.S.R. conductors, the insulation between aluminium and steel conductors is_________?
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A. no insulation is required

B. varnish

C. bitumen

D. insulin

500. The phenomenon qf rise in voltage at the receiving end of the open-circuited or lightly loaded line is called the________________?
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A. Raman effect

B. Ferranti effect

C. none of the above

D. Seeback effect