electrical engineering MCQs – Page 139

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 Review each marked answer and report any item that may be outdated or unclear.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 generation 2. analog electronics 3. solid state switching circuits 4. parallel circuits 5. switchgear and protection 6. op amp circuits 7. transistor audio power amplifiers 8. electrostatics 9. heating and welding 10. multi stage transistor amplifiers 11. passive filters 12. network theorems 13. regulated d c power supply 14. a c fundamentals circuits and circuit theory 15. electromagnetic induction 16. power electronics 17. magnetism and electromagnetism 18. transformers 19. modulation and demodulation 20. d c generators 21. semiconductor theory 22. single phase induction motors 23. semiconductor diode 24. hybrid parameters 25. digital electronics 26. oscillators 27. earthing or grounding 28. single stage transistor amplifiers 29. d c motors 30. transistor biasing 31. amplifiers with negative feedback 32. basic electrical 33. electronic instruments 34. synchronous motors 35. field effect transistors fet 36. magnetic circuit 37. control systems 38. industrial drives 39. power generation 40. series parallel circuits 41. transistor tuned amplifiers 42. electrical engineering materials 43. rectifiers and converters 44. integrated circuits 45. scr silicon controlled rectifiers 46. cables 47. polyphase induction motors 48. measurement and instrumentation 49. transistors 50. electrical machine design 51. electrolysis and storage of batteries 52. electric traction 53. transmission and distribution

2761. An ammeter should have_____________ resistance?
0

A. Very low

B. Infinite

C. Very large

D. None of the above

2762. Machines cooled by direct cooling method may be called_____________?
0

A. supercharged

B. conductor cooled

C. inner cooled

D. any of the above

2763. What is the total resistance of a voltmeter on the 10 V range when the meter movement is rated for 50 A of full-scale current ?
0

A. 10 kO

B. None of the above

C. 20 kO

D. 200 kO

2764. Which of the following methods is most accurate ?
0

A. Equivalent torque method

B. Equivalent power method

C. Equivalent current method

D. Method of average losses

2765. An IC has _______________size?
0

A. Large

B. Extremely small

C. Very large

D. None of the above

2766. Multi-layer helical windings are commonly used in the transformers as high voltage windings_______________?
0

A. upto 50 kV

B. upto 20 kV

C. for 110 kV and above

D. upto 80 kV

2767. By which of the following methods motor rating for variable load drives can be determined ?
0

A. Method of average losses

B. Equivalent current method

C. All of the above

D. Equivalent power method

E. Equivalent torque method

2768. A voltmeter has a resistance of G ohms and range V volts. The value of resistance required in series to convert it into voltmeter of range nV is________________?
0

A. nG

B. G/n

C. (n-1)G

D. G/(n-1)

2769. A voltmeter is connected in a _____________ with the circuit component across which potential difference is to be measured?
0

A. Series

B. Parallel

C. Series or parallel

D. None of the above

2770. When an ammeter is inserted in the circuit, the circuit current will _____________?
0

A. Decrease

B. None of the above

C. Remain the same

D. Increase

2771. A MOSFET is sometimes called______________ JFET?
0

A. open gate

B. shorted gate

C. many gate

D. insulated gate

2772. The sensitivity of a multimeter is given in _______________?
0

A. none of the above

B. O

C. kO/V

D. Amperes

2773. The multivibrator which generates square wave of its own is the ____________multivibrator?
0

A. Monostable

B. Bistable

C. Astable

D. None of the above

2774. electromagnets generally function as holding magnets ?
0

A. None of the above

B. Portative

C. Tractive

D. Either of the above

2775. A MOSFET has______________ terminals?
0

A. three

B. four

C. five

D. two

2776. The gate of a JFET is ___________ biased?
0

A. forward

B. none of the above

C. reverse

D. reverse as well as forward

2777. The most popular types of ICs are _________________?
0

A. Thin-film

B. Monolithic

C. Hybrid

D. Thick-film

2778. In D.C. machines the number of slots per pole usually lies___________?
0

A. between 2 to 4

B. between 9 to 16

C. between 6 to 8

D. between 20 to 30

2779. The winding where dummy coils are used is sometimes called______________?
0

A. duplex winding

B. forced winding

C. triplex winding

D. none of the above

2780. The SiO2 layer in an IC acts as ________________?
0

A. None of the above

B. An insulating layer

C. Mechanical output

D. A resistor

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