A.Anyone of these
B.Unwanted turn ON
C.Both A and B
D.Breakdown of J2 junction
Explanation: The correct answer is Both A and B.
Submitted by: Academy of Pakistan
Power Electronics in Electrical Engineering MCQs: 217 practice questions with answer choices and available explanations. Page 11 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 11 of 15 · 217 total solved questions available.
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A.None of these
B.Bottom switch of each leg is on at any instant
C.Top switch of each leg is on at any instant
D.Either A. or B.
Explanation: The correct answer is Either A. or B..
Submitted by: Academy of Pakistan
A.it can be turned OFF but not ON with a gate pulse.
B.it can be turned ON only during one half cycle of an AC.
C.it can be turned ON but not OFF with a gate pulse.
D.it conducts only during one half cycle of an alternating current wave.
Explanation: The correct answer is it can be turned ON but not OFF with a gate pulse..
Submitted by: Academy of Pakistan
A.BJT
B.TRIAC
C.SIT
D.IGBT
Explanation: The correct answer is SIT.
Submitted by: Academy of Pakistan
A.High power current control
B.Low power phase control
C.High power phase control
D.Low power current control
Explanation: The correct answer is High power phase control.
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A.low voltage demand
B.high current demand
C.high voltage demand
D.low current demand
Explanation: The correct answer is high voltage demand.
Submitted by: Academy of Pakistan
A.Flyback capacitor
B.Flyback transformer
C.Flyback resistor
D.Flyback transistor
Explanation: The correct answer is Flyback transformer.
Submitted by: Academy of Pakistan
A.All of these
B.Triangle carrier
C.Sawtooth carrier
D.Inverted sawtooth carrier
Explanation: The correct answer is All of these.
Submitted by: Academy of Pakistan
A.All of these
B.Switches, radio interferences
C.Motors
D.Computers, digital electronics
Explanation: The correct answer is All of these.
Submitted by: Academy of Pakistan
A.Unidirectional
B.Non directional
C.Bidirectional
D.Either (a) or (b)
Explanation: The correct answer is Unidirectional.
Submitted by: Academy of Pakistan
A.Goes into avalanche condition
B.Negative resistance characteristics
C.Voltage drop snaps back
D.All of these
Explanation: The correct answer is All of these.
Submitted by: Academy of Pakistan
A.Collector, emitter and base
B.Drain, source and gate
C.Drain, source and base
D.Collector, emitter and gate
Explanation: The correct answer is Drain, source and gate.
Submitted by: Academy of Pakistan
A.Decays as 2R, where R is the separation distance between the emitter and the receptor
B.Decays as 1 / 2 R, where R is the separation distance between the emitter and the receptor
C.Decays as R, where R is the separation distance between the emitter and the receptor
D.Decays as 1 / R, where R is the separation distance between the emitter and the receptor
Explanation: The correct answer is Decays as 1 / R, where R is the separation distance between the emitter and the receptor.
Submitted by: Academy of Pakistan
A.Voltage sensor in series with IGBT
B.Current sensor across IGBT
C.Current sensor in series with IGBT
D.Voltage sensor across IGBT
Explanation: The correct answer is Current sensor in series with IGBT.
Submitted by: Academy of Pakistan
A.SCR
B.GTO
C.TRIAC
D.Only (a) and (b)
Explanation: The correct answer is Only (a) and (b).
Submitted by: Academy of Pakistan