A.SUS
B.BCS
C.Triac
D.Diac
Explanation: The correct answer is BCS.
Submitted by: Academy of Pakistan
Power Electronics in Electrical Engineering MCQs: 217 practice questions with answer choices and available explanations. Page 3 of 15.
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View All Electrical Engineering MCQs MCQsBasic Electrical MCQs121Power Electronics217Transformers132Transmission and Distribution90D.C. Motors130D.C. Generators120Polyphase Induction Motors99Single Phase Induction Motors110Synchronous Motors122Network Theorems47Economics of Power Generation98A.C. Fundamentals, Circuits and Circuit Theory109Cables57Electrolysis and Storage of Batteries119Electrostatics180Magnetic Circuit28Rectifiers and Converters58Magnetism and Electromagnetism85Electromagnetic Induction85Switchgear and Protection102OP-AMP Circuits24Heating and Welding50Earthing or Grounding11Parallel Circuits25Oscillators28Amplifiers with Negative Feedback18Transistors42Semiconductor Diode44Analog Electronics46Hybrid Parameters12Modulation and Demodulation40Control Systems100Digital Electronics36Electric Traction74Electrical Engineering Materials100Electrical Machine Design103Electronic Instruments30Field Effect Transistors - FET47Industrial Drives70Integrated Circuits15Measurement and Instrumentation109Multi-Stage Transistor Amplifiers40Power Generation121Regulated D.C. Power Supply39SCR (Silicon Controlled Rectifiers)25Semiconductor Theory35Single Stage Transistor Amplifiers38Solid-State Switching Circuits29Transistor Audio Power Amplifiers39Transistor Biasing40Transistor Tuned Amplifiers40Series-Parallel Circuits29Passive Filters20Operational Amplifier30
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Power Electronics
Showing page 3 of 15 · 217 total solved questions available.
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A.Spread time
B.Rise time
C.Delay time
D.Same for every case
Explanation: The correct answer is Spread time.
Submitted by: Academy of Pakistan
A.cathode current increases
B.anode current decreases
C.anode current does not decrease at all
D.anode current increases
Explanation: The correct answer is anode current does not decrease at all.
Submitted by: Academy of Pakistan
A.anode voltage drops from 100 % to 90 % of its actual value
B.gate current increases from 90 % to 100 % of its final value
C.all of these
D.anode current reaches 10 % from forward leakage current
Explanation: The correct answer is all of these.
Submitted by: Academy of Pakistan
A.Dissipates a fair amount of switching power
B.All of these
C.Improves the reverse bias safe operating area
D.Divert the collector current during turn – off
Explanation: The correct answer is All of these.
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A.Phase and commutation
B.Phase angle converter
C.Phase angle commutation
D.Permanent angle converter
Explanation: The correct answer is Phase angle converter.
Submitted by: Academy of Pakistan
A.None of these
B.Frequency domain
C.Either A. or B.
D.Time domain
Explanation: The correct answer is Either A. or B..
Submitted by: Academy of Pakistan
A.Recovery is only 5 µs
B.None of these
C.Recovery is only 50 µs
D.Doping is carried out
Explanation: The correct answer is Doping is carried out.
Submitted by: Academy of Pakistan
A.Aluminium
B.Iron
C.Carbon
Explanation: The correct answer is Aluminium.
Submitted by: Academy of Pakistan
A.IGBTs
B.All of above
C.B.JTs
D.MOSFETs
Explanation: The correct answer is All of above.
Submitted by: Academy of Pakistan
Due to non sinusoidal waveform of the input current, the power factor of the rectifier is________?
0A.Negatively affected by firing angle
B.Negatively affected by distortion of the input current
C.Both (a) and (b)
D.Positively affected by both firing angle and distortion of the input current
Explanation: The correct answer is Both (a) and (b).
Submitted by: Academy of Pakistan
A.Equal to the sum of voltage when switch is open
B.Non zero
C.Zero
D.Twice of the voltage when switch is open
Explanation: The correct answer is Non zero.
Submitted by: Academy of Pakistan
In constant frequency PWM, at perturbation the amplitude of the sinusoidal component is a________?
0A.Linear function
B.Constant function
C.Non linear function
D.None of these
Explanation: The correct answer is None of these.
Submitted by: Academy of Pakistan
A.Both passive and active filters
B.Active filter
C.Passive filter
D.None of these
Explanation: The correct answer is Both passive and active filters.
Submitted by: Academy of Pakistan
A.600 A
B.20 A
C.400 A
D.200 A
Explanation: The correct answer is 200 A.
Submitted by: Academy of Pakistan