electrical engineering MCQs – Page 307

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 Review each marked answer and report any item that may be outdated or unclear.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
6121. A car is raining at a constant speed of 50 km/h, which of the following is the feedback element for the driver ?
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A. Eyes

B. Clutch

C. None of the above

D. Steering wheel

E. Needle of the speedometer
6122. The capacitance, in force-current analogy, is analogous to_____________?
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A. displacement

B. momentum

C. velocity

D. mass
6123. Spring constant in force-voltage analogy is analogous to_____________?
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A. current

B. reciprocal of capacitance

C. resistance

D. capacitance

6124. increases the steady state accuracy?
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A. Integrator

B. Phase lead compensator

C. Phase lag compensator

D. Differentiator

6125. ______________By which of the following the system response can be tested better ?
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A. Sinusoidal input signal

B. Unit impulse input signal

C. Exponentially decaying signal

D. Ramp input signal

6126. Which of the following is an electromagnetically device ?
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A. LVDT

B. Induction relay

C. Thermocouple

D. None of the above

E. Any of the above

6127. A controller, essentially, is a________________?
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A. clipper

B. amplifier

C. comparator

D. sensor

6128. Which of the following should be done to make an unstable system stable ?
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A. The gain of the system should be decreased

B. The number of zeros to the loop transfer function should be increased

C. The number of poles to the loop transfer function should be increased

D. The gain of the system should be increased
6129. Which of the following can be measured by LVDT ?
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A. Displacement

B. Acceleration

C. Any of the above

D. Velocity

6130. An automatic toaster is a ___________ loop control system?
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A. open

B. closed

C. partially closed

D. any of the above

6131. If the gain of the critical damped system is increased it will behave as______________?
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A. underdamped

B. oscillatory

C. critically damped

D. none of the above

E. overdamped

6132. Which of the following is an open loop control system ?
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A. Field controlled D.C. motor

B. Ward leonard control

C. Stroboscope

D. Metadyne

6133. The first order control system, which is well designed, has a_______________?
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A. small bandwidth

B. none of the above

C. negative time constant

D. large negative transfer function pole
6134. Due to which of the following reasons excessive bond width in control systems should be avoided ?
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A. Noise is proportional to band width

B. None of the above

C. It leads to low relative stability

D. It leads to slow speed of response

6135. A good control system has all the following features except_____________?
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A. sufficient power handling capacity

B. good stability

C. slow response

D. good accuracy

6136. In open loop system_____________?
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A. the control action is independent of the output

B. the control action depends on system variables

C. the control action depends on the size of the system

D. the control action depends on the input signal

6137. With feedback __________ increases?
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A. gain

B. effects of disturbing signals

C. sensitivity

D. system stability
6138. ___________From which of the following transfer function can be obtained ?
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A. Output-input ratio

B. Signal flow graph

C. Standard block system

D. Analogous table

E. None of the above

6139. The viscous friction co-efficient, in force-voltage analogy, is analogous to______________?
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A. charge

B. reciprocal of inductance

C. resistance

D. none of the above

E. reciprocal of conductance

6140. 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.