electrical engineering MCQs – Page 296

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 Review each marked answer and report any item that may be outdated or unclear.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
5901. The materil used to coat inside the face of CRT is ______________?
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A. Silicon

B. Carbon

C. Sulphur

D. Phosphorous
5902. If the negative potential on the control grid of CRT is increased, the intensity of spot _____________?
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A. Remains the same

B. Is decreased

C. None of the above

D. Is increased

5903. A galvanometer in series with a high resistance is called_______________?
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A. A voltmeter

B. An ammeter

C. None of the above

D. A wattmeter

5904. A galvanometer of resistance G is shunted by a very small resistance S. The resistance of the resulting ammeter is ______________?
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A. G-S

B. None of the above

C. G+S

D. GS/(G+S)
5905. An ideal ammeter has ______________ resistance?
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A. Infinite

B. High

C. Zero

D. Low

5906. The sensitivity of a multimeter is given in _______________?
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A. O

B. kO/V

C. none of the above

D. Amperes

5907. A voltmeter should have ____________resistance?
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A. Very high

B. Very low

C. Zero

D. None of the above

5908. The horizontal plates of a CRO are supplied with _____________ to observe the waveform of signal?
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A. Cosine wave

B. Sawtooth wave

C. Sinusoidal wave

D. None of the above

5909. For display of signal pattern _____________voltage is applied to the horizontal plates of a CRO?
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A. Sawtooth

B. Rectangular

C. None of the above

D. Sinusoidal

5910. If the full-scale deflection current of a multimeter is 50 A, its sensitivity is ________________?
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A. 50 kO/V

B. 20 kO/V

C. 10 kO/V

D. 100 kO/V

5911. An ammeter has a resistance of G ohms and range of I amperes. The value of resistance required in parallel to convert it into an ammeter of range nI is______________?
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A. G/(n-1)

B. G/n

C. (n-1)G

D. nG

5912. An ammeter is connected in __________ with the circuit element whose current we wish to measure?
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A. None of the above

B. Series

C. Series or parallel

D. Parallel

5913. A VTVM has_____________input resistance than that of a multi meter?
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A. Same

B. None of the above

C. Less

D. More
5914. A CRO is used to measure _________________?
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A. Phase

B. Voltage

C. Frequency

D. All of above
5915. When an ammeter is inserted in the circuit, the circuit current will _____________?
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A. Increase

B. None of the above

C. Remain the same

D. Decrease
5916. To send 10% of the main current through a moving coil galvanometer of resistance 99 O the shunt required is______________?
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A. 100 O

B. 9 O

C. 11 O

D. 9 O

5917. The input resistance of a VTVM is about ______________?
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A. 10 MO

B. 10 kO

C. 1000 O

D. 20 kO

5918. If 2% of the main current is to be passed through a galvanometer of resistance G, then resistance of the shunt required is ________________?
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A. G/50

B. G/49

C. 49 G

D. 50 G

5919. An ammeter should have_____________ resistance?
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A. Very low

B. None of the above

C. Infinite

D. Very large

5920. 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 ?
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A. 20 kO

B. 200 kO

C. None of the above

D. 10 kO