electrical engineering MCQs – Page 148

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 Review each marked answer and report any item that may be outdated or unclear.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

2941. Zener diode are generally made of _____________?
0

A. None of the above

B. Germanium

C. Carbon

D. Silicon

2942. A power supply can deliver a maximum rated current of 0.5 A at full-load output voltage of 20 V. What is the minimum load resistance that you can connect across the supply?
0

A. 20 O

B. 40 O

C. 15 O

D. 10 O

2943. cooling is the process of dissipating the armature and field winding losses to a cooling medium circulating within the winding insulation wall______________?
0

A. Direct

B. Conventional

C. Indirect

D. Any of the above

2944. If a multimeter has a sensitivity of 1000 O per volt and reads 50 V full scale, its internal resistance is _____________?
0

A. 20 kO

B. 50 kO

C. 10 kO

D. None of the above

2945. A JFET has ____________ power gain?
0

A. small

B. very high

C. very small

D. none of the above

2946. For a differentiating circuit to be effective, the RC product should be ___________ the time period of the input wave?
0

A. 5 times greater than

B. At least 10 times greater than

C. Equal to

D. 5 times smaller than

2947. In a D.C. machine, the value of peripheral speed should not, normally, exceed___________?
0

A. 20 m/s

B. 30 m/s

C. 40 m/s

D. 10 m/s

2948. On which of the following variables heat convected depends ?
0

A. Thermal resistivity, density, specific heat

B. Temperature difference between heated surface and coolant

C. Gravitational constant

D. Power density

E. All of the above

2949. In a portable instrument, the controlling torque is provided by_____________?
0

A. eddy currents

B. all of the above

C. gravity

D. spring

2950. The transient response, with feedback system_____________?
0

A. rises quickly

B. decays quickly

C. decays slowly

D. rises slowly

2951. In open loop system_____________?
0

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

B. the control action depends on system variables

C. the control action depends on the input signal

D. the control action is independent of the output

2952. Phase margin of a system is used to specify which of the following ?
0

A. Time response

B. Frequency response

C. Absolute stability

D. Relative stability

2953. To measure radio frequency, the suitable frequency meter is_______________?
0

A. electrical resonance frequency meter

B. heterodoxy frequency meter

C. Weston frequency meter

D. reed vibrator frequency meter

2954. The tail current of a differential amplifier is_______________?
0

A. equal to the difference in base currents

B. equal to either collector current

C. half of either collector current

D. two times either collector current

2955. A power factor meter has________________?
0

A. two current circuits and one pressure circuit

B. one current circuit and two pressure circuits

C. none of the above

D. one current circuit and one pressure circuit

2956. The adjustment of position of shading bands, in an energy meter is done to provide______________?
0

A. creep compensation

B. friction compensation

C. none of the above

D. braking torque

2957. In electrical-pneumatic system analogy the current is considered analogous to_____________?
0

A. air flow

B. velocity

C. pressure

D. air flow rate

2958. The electrical power to a meggar is provided by________________?
0

A. battery

B. any of the above

C. permanent magnet D.C. generator

D. AC. generator

2959. An ohmmeter is a____________?
0

A. moving iron instrument

B. dynamometer instrument

C. none of the above

D. moving coil instrument

2960. signal will become zero when the feedback signal and reference signs are equal?
0

A. Reference

B. Feedback

C. Actuating

D. Input

Previous Next

Showing 2941 to 2960 of 7381 mcqs