Get App on

Play Store

Electrical Engineering Mcqs

Under harmonic free load voltages, the 3 phase VSI_____________?

  • (A)  Does not contains second harmonic
  • (B)  Does not contains third harmonic
  • (C)  Does not contains fifth harmonic
  • (D)  Does not contains seventh harmonic
Submitted By :Ali Uppal

Double edge modulation eliminates certain harmonics when the reference is a__________?

  • (A)  Sine wave
  • (B)  Square wave
  • (C)  Triangular wave
  • (D)  Trapezoidal wave
Submitted By :Ali Uppal

The conduction losses in IGBT is____________?

  • (A)  More than that of MOSFET
  • (B)  Lower than that of MOSFET
  • (C)  Equal to that of MOSFET
  • (D)  Equal to that of BJT
Submitted By :Ali Uppal

For a buck converter to reduce the conduction losses in diode

  • (A)  A high on – resistance switch can be added in parallel
  • (B)  A low on – resistance switch can be added in parallel
  • (C)  A high on – resistance switch can be added in series
  • (D)  A low on – resistance switch can be added in series
Submitted By :Ali Uppal

Advantages of HVDC transmission over AC system is / are____________?

  • (A)  Reversal of power can be controlled by firing angle
  • (B)  Very good dynamic behavior
  • (C)  They can link two AC system operating unsynchronized
  • (D)  All of these
Submitted By :Ali Uppal

For bidirectional operation of converters____________?

  • (A)  A parallel combination of controllable switch and a diode is used
  • (B)  A parallel combination of controllable switch and capacitor is used
  • (C)  A series combination of controllable switch and a diode is used
  • (D)  A series combination of controllable switch and a capacitor is used
Submitted By :Ali Uppal

In rectifiers, load current flow is_________?

  • (A)  Unidirectional
  • (B)  Bidirectional
  • (C)  Either (a) or (b)
  • (D)  Non directional
Submitted By :Ali Uppal

Due to non sinusoidal waveform of the input current, the power factor of the rectifier is____________?

  • (A)  Negatively affected by firing angle
  • (B)  Negatively affected by distortion of the input current
  • (C)  Positively affected by both firing angle and distortion of the input current
  • (D)  Both (a) and (b)
Submitted By :Ali Uppal

Single phase VSI are mainly used in___________?

  • (A)  Power supplies
  • (B)  Ups
  • (C)  Multilevel configuration
  • (D)  All of these
Submitted By :Ali Uppal

The man made noise sources is / are_____________?

  • (A)  Motors
  • (B)  Switches, radio interferences
  • (C)  Computers, digital electronics
  • (D)  All of these
Submitted By :Ali Uppal

Submit Your Mcqs


Mcqs Home Categories


Management Sciences


Engineering Subjects


Medical Subjects


LIKE US ON