electrical engineering MCQs – Page 160

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 Review each marked answer and report any item that may be outdated or unclear.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
3181. _____________is the reference input minus the primary feedback?
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A. Zero sequence

B. Manipulated variable

C. Primary feedback

D. Actuating signal
3182. As a result of introduction of negative feedback which of the following will not decrease ?
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A. Band width

B. Distortion

C. Overall gain

D. Instability

3183. Main traction systems used in India are, those using______________?
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A. all of the above

B. steam engine locomotives

C. diesel engine locomotives

D. diesel electric locomotives

E. electric locomotives

3184. If the feedback resistor in Q15 (above question) is open, the voltage gain ____________?
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A. depends on Ri

B. increases

C. is not affected

D. decreases

3185. The resistance in the circuit of the moving coil of a dynamometer wattmeter should be_____________?
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A. low

B. almost zero

C. high

D. none of the above

3186. In a 3-phase power measurement by two wattmeter method, both the watt meters had identical readings. The power factor of the load was___________?
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A. unity

B. zero

C. 0.8 lagging

D. 0.8 leading

3187. The disc of an instrument using eddy current damping should be of________________?
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A. conducting and non-magnetic material

B. none of the above

C. non-conducting and magnetic material

D. conducting and magnetic material

3188. According to application, instruments are classified as_____________?
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A. switch board

B. portable

C. both A. and B.

D. moving coil

E. moving iron

F. both D. and E.

3189. In an energy meter braking torque is produced to________________?
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A. bring energy meter to stand still

B. safe guard it against creep

C. maintain steady speed and equal to driving torque

D. brake the instrument

3190. The transfer function is applicable to which of the following ?
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A. Linear and time-in variant systems

B. Non-linear systems

C. None of the above

D. Linear and time-variant systems

E. Linear systems

3191. Which of the following is the non-linearity caused by servomotor ?
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A. Backlash

B. None of the above

C. Static friction

D. Saturation
3192. Which of the following is the output of a thermocouple ?
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A. None of the above

B. Alternating current

C. A.C. voltage

D. D.C. voltage

E. Direct current

3193. Most common form of A.C. meters met with in every day domestic and industrial installations are______________?
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A. all of the above

B. commutator motor meters

C. induction type single phase energy meters

D. mercury motor meters

3194. In thermal-electrical analogy charge is considered analogous to_______________?
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A. none of the above

B. heat flow

C. reciprocal of temperature

D. temperature

E. reciprocal of heat flow

3195. The node voltage at the top of the til resistor is closes to________________?
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A. emitter supply voltage

B. collector supply voltage

C. tail current times base resistance

D. zero
3196. The pointer of an indicating instrument should be______________?
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A. neither A. nor B.

B. very light

C. either A. or B.

D. very heavy

3197. Due to which of the following reasons excessive bond width in control systems should be avoided ?
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A. It leads to low relative stability

B. It leads to slow speed of response

C. Noise is proportional to band width

D. None of the above

3198. has tendency to oscillate______________?
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A. Open loop system

B. Closed loop system

C. Both A. and B.

D. Neither A. nor B.

3199. Commonly used standard capacitor is______________?
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A. multilayer parallel plate type

B. concentric cylindrical type

C. electrostatic type

D. spherical type

3200. The NOR gate is OR gate followed by____________________?
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A. NAND gate

B. None of the above

C. NOT gate

D. AND gate