electrical engineering MCQs – Page 347

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 Review each marked answer and report any item that may be outdated or unclear.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
6921. Various adjustments in an energy meter include_______________?
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A. temperature compensation

B. overload and voltage compensation

C. light load or friction

D. lag and creep

E. all of the above
6922. Which of the following essential features is possessed by an indicating instrument?
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A. All of the above

B. Controlling device

C. Deflecting device

D. Damping device

6923. E.m.f. of a Weston cell is accurately measured by________________?
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A. electrostatic voltmeter

B. isothermal voltmeter

C. hot wire voltmeter

D. electrodynamic voltmeter

6924. Standard resistor is made from_________________?
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A. nichrome

B. maganin

C. silver

D. platinum

6925. For measurement of inductance having high value, we should use______________?
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A. Maxwells bridge

B. Any of the above

C. Maxwell Wein bridge

D. Hays bridge
6926. Which of the following meters are not used on D.C. circuits______________?
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A. Commutator motor meters

B. Mercury motor meters

C. Induction meters

D. None of the above

6927. In order to achieve high accuracy, the slide wire of a potentiometer should be_______________?
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A. neither too small not too large

B. very thick

C. as long as possible

D. as short as possible

6928. Volt box is a component to_____________?
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A. none of the above

B. compare voltage in a box

C. extend voltage range

D. measure voltage

6929. Which of the following is measured by using a vector voltmeter ?
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A. All of the above

B. Amplifier gain and phase shift

C. Complex insersion loss

D. Filler transfer functions

6930. In a single phase power factor meter the phase difference between the currents in the two pressure coils is___________________?
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A. approximately 0

B. exactly 90

C. exactly 0

D. approximately 90

6931. When a capacitor was connected to the terminal of ohmmeter, the pointer indicated a low resistance initially and then slowly came to infinity position. This shows that capacitor is____________?
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A. faulty

B. all right

C. short-circuited

6932. The spring material used in a spring control device should have the following property?
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A. Most be of low temperature co-efficient

B. Should not be subjected to fatigue

C. All of the above

D. Should be non-magnetic

E. Should have low specific resistance

6933. Which of the following are integrating instruments ?
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A. Voltmeters

B. Ammeters

C. Wattmeters

D. Ampere-hour and watt-hour meters
6934. Alternating current is measured by_______________?
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A. permanent magnet type ammeter

B. moving iron repulsion type voltmeter

C. electrostatic ammeter

D. induction ammeter
6935. Wagner earthing device is used to eliminate errors due to________________?
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A. electrostatic coupling

B. electromagnetic coupling

C. both A. and B.

D. none of the above

6936. The gravity controlled instrument has crowded scale because current is proportional to________________?
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A. sine of deflection angle

B. deflection angle

C. balancing weight

6937. In a Schering bridge the potential of the detector above earth potential is______________?
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A. a few volts only

B. 5 kV

C. 10 kV

D. 1 kV

6938. A voltage of about 200 V can be measured__________________?
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A. a D.C. potentiometer in conjunction with a volt ratio box

B. directly by a D.C. potentiometer

C. a D.C. potentiometer in conjunction with a known resistance

D. none of the above

6939. For measuring a very high resistance we should use_______________?
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A. Wheat stone bridge

B. Meggar

C. Kelvins double bridge

D. None of the above

6940. The switch board instruments________________?
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A. either A. or B.

B. should be mounted in vertical position

C. neither A. nor B.

D. should be mounted in horizontal position