electrical engineering MCQs – Page 206

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 Review each marked answer and report any item that may be outdated or unclear.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
4101. Permittivity is expressed in_____________?
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A. Weber/meter

B. Farad/sq-m

C. Farad/meter

D. Weber/sq-m

4102. If a charged rod is brought closer to a gas filled balloon then______________?
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A. Balloon bursts

B. Balloon squeezes

C. Radius decreases

D. Radius increase
4103. Equivalent capacitance is greater than individual capacitances in_____________?
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A. series combination

B. parallel combination

C. both series and parallel combinations

D. none of above

4104. The bridge used for the measurement of the value of the capacitance is____________?
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A. Wiens bridge

B. Hays bridge

C. Schering bridge

D. Wheatstone bridge

4105. The presence of an uncharged conductor near a charged one increases the__________?
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A. all of the above

B. charge of the charged conductor

C. potential of the charged conductor

D. capacity of the charged conductor
4106. capacitors are used for audio frequency and radio frequency coupling and tuning ?
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A. Air

B. Plastic film

C. Ceramic

D. Mica
4107. Which of the following capacitor is preferred in case of single phase motor ?
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A. Mica capacitor

B. Ceramic capacitor

C. Electrolytic capacitor

D. Paper capacitor

4108. Mica capacitors are characterized by all of the following except___________?
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A. accurate value

B. stable operation

C. low losses

D. low leakage reactance
4109. For making a capacitor, it is better to select a dielectric having___________?
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A. permittivity slightly more than that of air

B. low permittivity

C. permittivity same as that of air

D. high permittivity
4110. In a charged capacitor the energy resides in________________?
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A. magnetic hield

B. nuclear field

C. gravitational field

D. electric field
4111. The power dissipated in a pure capacitor is______________?
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A. zero

B. proportional to applied voltage

C. proportional to value of capacitance

D. both (B) and (C) above

4112. A capacitor consists of two____________?
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A. conductors separated by an insulator

B. silver-coated insulators

C. insulators separated by a dielectric

D. ceramic plates and one mica disc

4113. Dielectric strength of a material depends on_____________?
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A. thickness

B. temperature

C. moisture content

D. all of the above

E. none of the above

4114. In the case of a lossy capacitor, its series equivalent resistance value will be_______________?
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A. very small

B. small

C. large

D. zero

4115. While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?
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A. open circuited

B. leaky

C. short-circuited

D. alright

4116. Out of the following capacitors of identical rating which one will have the smallest dimensions ___________ ?
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A. Ceramic capacitor

B. Mica capacitor

C. Paper capacitor

D. Aluminium foil capacitor

4117. Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the____________?
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A. charge on the capacitor decreases

B. charge on the capacitor increases

C. voltage across the plates decreases

D. Voltage across the plates increases

4118. What will happen to an insulating medium if voltage more than the breakdown voltage is applied on it__________ ?
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A. It will get punctured or cracked

B. It will melt

C. It will become magnetic

D. Its molecular structure will get changed

4119. The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as____________?
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A. chemical effect

B. magnetic effect

C. pholoelectric effect

D. induction
4120. The absolute permittivity of free space is given by_____________?
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A. 8.854 x KT11 F/m

B. 8.854 x 1(T9 F/m)

C. 8.854 x 10?12 F/m

D. 8.854 x 1(T10 F/m)