A.Low stress on switch
B.Large number of reactive component
C.Low stress on capacitor
D.None of these
Explanation: The correct answer is None of these.
Submitted by: Academy of Pakistan
Power Electronics in Electrical Engineering MCQs: 217 practice questions with answer choices and available explanations. Page 14 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 14 of 15 · 217 total solved questions available.
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A.120 degree before the zero crossing of the corresponding line voltages
B.120 degree after the zero crossing of the corresponding line voltages
C.60 degree before the zero crossing of the corresponding line voltages
D.60 degree after the zero crossing of the corresponding line voltages
Explanation: The correct answer is 60 degree after the zero crossing of the corresponding line voltages.
Submitted by: Academy of Pakistan
A.qT/K
B.(K2/q)(T + 1/T – 1)
C.KT/q
D.Kq/T
Explanation: The correct answer is KT/q.
Submitted by: Academy of Pakistan
A.TRIAC
B.Diode
C.SCR
D.BJT
Explanation: The correct answer is TRIAC.
Submitted by: Academy of Pakistan
A.A switching and shorting pulse combination
B.All of these
C.A shorting pulse distributor
D.A switching pulse generator and a shorting pulse generator
Explanation: The correct answer is All of these.
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A.Interference
B.Electromagnetic compatibility
C.Susceptibility
D.Emission
Explanation: The correct answer is Electromagnetic compatibility.
Submitted by: Academy of Pakistan
A.Voltage clamping device
B.Fast acting current limiting device (FACL fuse)
C.CB
D.Snubber circuit
Explanation: The correct answer is Fast acting current limiting device (FACL fuse).
Submitted by: Academy of Pakistan
A.Both amplitude and phase is controllable
B.Only phase is controllable
C.Amplitude, phase and frequency of voltages should always be controllable
D.Only amplitude of voltage is controllable
Explanation: The correct answer is Amplitude, phase and frequency of voltages should always be controllable.
Submitted by: Academy of Pakistan
A.Metal – oxide semiconductor field effect transmitter
B.Metal – oxide silicon field effect transistor
C.Molybdenum – oxide semiconductor field effect transistor
D.Metal – oxide semiconductor field effect transistor
Explanation: The correct answer is Metal – oxide semiconductor field effect transistor.
Submitted by: Academy of Pakistan
A.junction J3 is in forward bias and J1, J2 in reverse bias.
B.junction J1, J3 is in reverse bias and J2 is in forward bias.
C.junction J1 and J2 is in forward bias and J3 is in reverse bias.
D.junction J2 is in reverse bias and J1, J3 is in forward bias.
Explanation: The correct answer is junction J1, J3 is in reverse bias and J2 is in forward bias..
Submitted by: Academy of Pakistan
A.voltage sensitive load from excessive dc power supply output voltages
B.voltage sensitive load from excessive ac power supply output voltages
C.current sensitive load from excessive dc power supply output voltages
D.current sensitive load from excessive ac power supply output voltages
Explanation: The correct answer is voltage sensitive load from excessive dc power supply output voltages.
Submitted by: Academy of Pakistan
A.Use of snubber circuit.
B.Using heat sink.
C.Using equalizing circuit
D.Using CB and fuse.
Explanation: The correct answer is Using heat sink..
Submitted by: Academy of Pakistan
A.Low power inverters
B.Only A. and B.
C.High power inverters
D.Rectifiers
Explanation: The correct answer is Only A. and B..
Submitted by: Academy of Pakistan
A.None of these
B.Insulation failure
C.Local hot spot
D.Breakdown of junction
Explanation: The correct answer is Local hot spot.
Submitted by: Academy of Pakistan
A.Rms value of the ac component of load voltage to the dc voltage
B.Peak value of the dc component of load voltage to the ac voltage
C.Average value of the ac component of load voltage to the peak value of voltage
D.Average value of the dc component of load voltage to the ac voltage
Explanation: The correct answer is Rms value of the ac component of load voltage to the dc voltage.
Submitted by: Academy of Pakistan