electrical engineering MCQs – Page 151

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 Review each marked answer and report any item that may be outdated or unclear.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

3001. Basically a potentiometer is a device for________________?
0

A. measuring a voltage

B. none of the above

C. comparing two currents

D. measuring a current

E. comparing two voltages

3002. Current cannot flow to ground through _______________?
0

A. a mechanical ground

B. an ordinary ground

C. a virtual ground

D. an a.c. ground

3003. ________________directly converts temperature into voltage?
0

A. Thermocouple

B. Gear train

C. None of the above

D. Potentiometer

E. LVDT

3004. An instrument transformer is used to extend the range of______________?
0

A. electrostatic instrument

B. moving coil instrument

C. any of the above

D. induction instrument

3005. For measurement of inductance having high value, we should use______________?
0

A. Any of the above

B. Maxwells bridge

C. Maxwell Wein bridge

D. Hays bridge

3006. The differential voltage gain of a differential amplifier is equal to RC divided by _______________?
0

A. RE

B. 2re

C. re

D. re/2

3007. The position and velocity errors of a type-2 system are_____________?
0

A. zero, zero

B. zero, constant

C. constant, constant

D. constant, infinity

3008. A certain inverting amplifier has a closed-loop voltage gain of 25. The Op-amp has an open-loop voltage gain of 100,000. If an Op-amp with an open-loop voltage gain of 200,000 is substituted in the arrangement, the closed-loop gain________________?
0

A. increases slightly

B. remains at 25

C. doubles

D. drops to 12.5

3009. A Weston synchronoscope is a________________?
0

A. none of the above

B. moving coil instrument

C. dynamometer instrument

D. moving iron instrument

3010. Which of the following is exhibited by Root locus diagrams ?
0

A. The poles of the transfer function for a set of parameter values

B. The response of a system to a step input

C. The frequency response of a system

D. None of the above

E. The bandwidth of the system

3011. For open control system which of the following statements is incorrect ?
0

A. Less expensive

B. Errors are caused by disturbances

C. Construction is simple and maintenance easy

D. Recalibration is not required for maintaining the required quality of the output

3012. The type 1 system has _________ at the origin?
0

A. no pole

B. two poles

C. net pole

D. simple pole

3013. An induction wattmeter can be used for_________________?
0

A. both D.C. and A.C.

B. D.C. only

C. A.C. only

D. any of the above

3014. Most sensitive galvanometer is_____________?
0

A. elastic galvanometer

B. spot ballistic galvanometer

C. vibration galvanometer

D. Duddlb galvanometer

3015. The type 2 system has __________ at the origin?
0

A. two poles

B. no net pole

C. net pole

D. simple pole

3016. For an Op-amp with negative feedback, the output is_________________?
0

A. fed back to the noninverting input

B. increased

C. equal to the input

D. fed back to the inverting input

3017. Which of the following can be measured by the use of a tachogenerator ?
0

A. Speed

B. Speed and acceleration

C. Displacement

D. None of the above

E. Acceleration

3018. ____________technique is not applicable to nonlinear system ?
0

A. Phase-plane representation

B. Quasi linearization

C. Functional analysis

D. Nyquist Criterion

3019. For measuring a very high resistance we should use_______________?
0

A. None of the above

B. Kelvins double bridge

C. Wheat stone bridge

D. Meggar

3020. The temperature, under thermal and electrical system analogy, is considered analogous to_______________?
0

A. none of the above

B. charge

C. current

D. capacitance

E. voltage

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