Power Electronics MCQs Quizlet (Bank of Solved Questions Answers)
By: Prof. Dr. Fazal Rehman | Last updated: March 3, 2022
Power Electronics MCQs Quizlet (Bank of Solved Questions Answers)
1. What typical of the value of SCR for modern alternator ____________.A. 0.5B. 1.5C. 1.0D. 1.2
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A
2. Input voltage 110 V and output voltage 150 V of a step up the chopper, the value of duty cycle isA. 0.45B. 0.27C. 0.32D. 0.67
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D
3. During the forward blocking mode of a thyristor the _______A. junction J3 is in forwarding bias and J1, J2 is in reverse biasB. junction J2 is in reverse bias and J1, J3 is in forwarding biasC. Junction J1 and J2 is in forwarding bias and J3 is in reverse biasD. Junction J1, J3 is in reverse bias and J2 is in forwarding bias
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B
4. Which of the following devices does not belong to the transistor family?A. MOSFETB. IGBTC. BJTD. GTO
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D
5. What is the power transistor is_____A. three layer, three junction deviceB. two layer, one junction deviceC. three layer, two junction deviceD. four layer, three junction device
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C
6. In a power transistor, ____ what is the controlled parameter is.A. ICB. IBC. VCED. VBE
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A
7. A power transistor is a device, which is…A. two-terminal, bipolar, voltage controlledB. three terminal, bipolar, current controlledC. three terminal, unipolar, voltage controlledD. two terminal, unipolar, current controlled
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B
8. The power transistors the IB vs VBE curve is…A. resembling the diode curveB. an exponentially decaying curveC. a parabolic curveD. a straight line Y = IB
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A
9. When the forward current gain α is given by ________A. IC/IBB. IE/IBC. IE/ICD. IC/IE
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D
10. When the power loss in which of the following cases would be the maximum when?A. both V & I are minimumB. only V is maximumC. both V & I are maximumD. only I is maximum
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C
11. When an AC-DC converter, a diode might be used as ________.A. a freewheeling DiodeB. a filterC. a voltage sourceD. a phase angle controller
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A
12. The p-n junction diode is forward biased when the width of the depletion region is ____A. remains ConstantB. increasesC. decreasesD. first increases than Decreases
