electrical engineering MCQs – Page 309

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 Review each marked answer and report any item that may be outdated or unclear.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
6161. ________________directly converts temperature into voltage?
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A. Thermocouple

B. Gear train

C. None of the above

D. Potentiometer

E. LVDT

6162. In a system low friction co-efficient facilitates___________?
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A. increased speed of response

B. increased velocity lag error

C. reduced time constant of the system

D. reduced velocity lag error
6163. The transient response of a system is mainly due to________________?
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A. stored energy

B. friction

C. inertia forces

D. internal forces

6164. A signal other than the reference input that tends to affect the value of controlled variable is known as_________________?
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A. reference input

B. control element

C. command

D. disturbance
6165. A conditionally stable system exhibits poor stability at______________?
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A. none of the above

B. reduced values of open loop gain

C. increased values of open loop gain

D. low frequencies

6166. The type 2 system has __________ at the origin?
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A. simple pole

B. two poles

C. no net pole

D. net pole

6167. ____________is a part of the human temperature control system?
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A. Leg movement

B. Digestive system

C. Perspiration system

D. Ear

6168. The effect of error damping is to______________?
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A. none of the above

B. provide larger settling lime

C. reduce steady state error

D. delay the response

E. any of the above

6169. The type 0 system has ___________ at the origin?
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A. two poles

B. none of the above

C. no pole

D. net pole

E. simple pole

6170. Mass, in force-voltage analogy, is analogous to________________?
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A. current

B. resistance

C. inductance

D. charge

6171. An amplidyne can give which of the following characteristics ?
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A. None of the above

B. Constant current as well as constant voltage

C. Constant voltage

D. Constant current

E. Constant current, constant voltage and constant power
6172. _______________is a closed loop system?
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A. Electric switch

B. Direct current generator

C. Auto-pilot for an aircraft

D. Car starter

6173. 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

6174. __________________can be extended to systems which are time-varying ?
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A. Bode-Nyquist stability methods

B. Root locus design

C. Transfer functions

D. State model representatives
6175. The transfer function is applicable to which of the following ?
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A. Linear systems

B. Linear and time-variant systems

C. Non-linear systems

D. Linear and time-in variant systems

E. None of the above

6176. _____________is the reference input minus the primary feedback?
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A. Manipulated variable

B. Primary feedback

C. Zero sequence

D. Actuating signal
6177. If a step function is applied to the input of a system and the output remains below a certain level for all the time, the system is_____________?
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A. always unstable

B. not necessarily stable

C. unstable

D. stable

E. any of the above

6178. Which of the following statements is not necessarily correct for open control system ?
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A. Generally free from problems of non-linearities

B. Input command is the sole factor responsible for providing the control action

C. Less expensive

D. Presence of non-linearities causes malfunctioning
6179. The type 1 system has _________ at the origin?
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A. no pole

B. two poles

C. simple pole

D. net pole

6180. A.C. servomotor is basically a____________?
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A. single phase induction motor

B. two phase induction motor

C. universal motor

D. three phase induction motor