A.Remains same with change in frequency
B.Decrease with frequency
C.Either A. or B.
D.Increase with frequency
Explanation: The correct answer is Increase with frequency.
Submitted by: Academy of Pakistan
Power Electronics in Electrical Engineering MCQs: 217 practice questions with answer choices and available explanations. Page 8 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 8 of 15 · 217 total solved questions available.
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A.2 V m
B.V m
C.V m / 2
D.4 V m
Explanation: The correct answer is 2 V m.
Submitted by: Academy of Pakistan
The square wave operation of 3 phase VSI lines contains the harmonics. The amplitudes are________?
0A.Inversely proportional to their harmonic order
B.None of these
C.Not related to their harmonic order
D.Directly proportional to their harmonic order
Explanation: The correct answer is Inversely proportional to their harmonic order.
Submitted by: Academy of Pakistan
A.0.2
B.0.75
C.0.7
D.0.25
Explanation: The correct answer is 0.25.
Submitted by: Academy of Pakistan
A.Multilevel configuration
B.Power supplies
C.All of these
D.Ups
Explanation: The correct answer is All of these.
Submitted by: Academy of Pakistan
A.3 – 50 µs
B.3 – 10 µs
C.3 – 100 µs
D.3 – 500 µs
Explanation: The correct answer is 3 – 100 µs.
Submitted by: Academy of Pakistan
A.None of these
B.Either A. or B.
C.Product of an average inductor current and a function of duty ratio
D.Average value of the output inductor current
Explanation: The correct answer is Either A. or B..
Submitted by: Academy of Pakistan
A.Suppressing emissions
B.Reducing the susceptibility of the receptor
C.Reducing the efficiency of the coupling path
D.All of these
Explanation: The correct answer is All of these.
Submitted by: Academy of Pakistan
A.of short duration
B.neither (A) nor (B)
C.of long period
D.both (A) and (B)
Explanation: The correct answer is of long period.
Submitted by: Academy of Pakistan
A.Current controlled bipolar device
B.Current controlled unipolar device
C.Voltage controlled unipolar device
D.Voltage controlled bipolar device
Explanation: The correct answer is Voltage controlled unipolar device.
Submitted by: Academy of Pakistan
A.Diac
B.SCR
C.Triac
D.UJT
Explanation: The correct answer is Triac.
Submitted by: Academy of Pakistan
A.Heat sink.
B.Snubber circuit.
C.Voltage clamping device.
D.CB and fuse.
Explanation: The correct answer is CB and fuse..
Submitted by: Academy of Pakistan
A.Both harmonic distortion and quality of input current increases
B.Both harmonic distortion and quality of input current decreases
C.Harmonic distortion increases and quality of input current decreases
D.Harmonic distortion decreases and quality of input current increases
Explanation: The correct answer is Harmonic distortion increases and quality of input current decreases.
Submitted by: Academy of Pakistan
A.AC – DC converters
B.DC – DC converters
C.AC – AC converters
D.DC – AC converters
Explanation: The correct answer is DC – DC converters.
Submitted by: Academy of Pakistan
A.Two SCR’s connected in parallel
B.Two BJT’s connected in series
C.Two SCR’s connected in series
D.Two SCR’s connected in reverse parallel
Explanation: The correct answer is Two SCR’s connected in reverse parallel.
Submitted by: Academy of Pakistan