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Rise time is defined by the interval when____________?

August 9, 2021March 2, 2018 by QuizMaster
Rise time is defined by the interval when____________?

A. gate current rises from 90 % to 100 % of it final value
B. anode voltage drops from 90 % to 10 % of its initial value
C. anode current rises 10 % to 90 % of its final value
D. both B and C

Categories Power Electronics

A modern power semiconductor device that combines the characteristic of BJT and MOSFET is_____________?

August 9, 2021March 2, 2018 by QuizMaster
A modern power semiconductor device that combines the characteristic of BJT and MOSFET is_____________?

A. IGBT
B. FCT
C. MCT
D. GTO

Categories Power Electronics

Delay time is defined by the interval when_______________?

August 9, 2021March 2, 2018 by QuizMaster
Delay time is defined by the interval when_______________?

A. gate current increases from 90 % to 100 % of its final value
B. anode current reaches 10 % from forward leakage current
C. anode voltage drops from 100 % to 90 % of its actual value
D. all of these

Categories Power Electronics

Which one is most suitable power device for high frequency (>100 KHz) switching application?

August 9, 2021March 2, 2018 by QuizMaster
Which one is most suitable power device for high frequency (>100 KHz) switching application?

A. BJT
B. Power MOSFET
C. Schottky diode
D. Microwave transistor

Categories Power Electronics

Snubber circuit is used with SCR_________________?

August 9, 2021March 2, 2018 by QuizMaster
Snubber circuit is used with SCR_________________?

A. in series
B. in parallel
C. either series or parallel
D. anti parallel

Categories Power Electronics

Why resistor is used in Snubber circuit_________________ ?

August 9, 2021March 2, 2018 by QuizMaster
Why resistor is used in Snubber circuit_________________ ?

A. To minimize the loss
B. To minimize the charging current
C. To minimize the discharging current
D. All of these

Categories Power Electronics

What may happen high dV / dt____________?

August 9, 2021March 2, 2018 by QuizMaster
What may happen high dV / dt____________?

A. Unwanted turn ON
B. Breakdown of J2 junction
C. Both A and B
D. Anyone of these

Categories Power Electronics

Thermal voltage VT can be given by____________?

August 9, 2021March 2, 2018 by QuizMaster
Thermal voltage VT can be given by____________?

A. Kq/T
B. KT/q
C. qT/K
D. (K2/q)(T + 1/T – 1)

Categories Power Electronics

What happen due to high di / dt____________?

August 9, 2021March 2, 2018 by QuizMaster
What happen due to high di / dt____________?

A. Breakdown of junction
B. Local hot spot
C. Insulation failure
D. None of these

Categories Power Electronics

IGBT combines the advantages of_____________?

August 9, 2021March 2, 2018 by QuizMaster
IGBT combines the advantages of_____________?

A. BJTs and SITs
B. BJTs and MOSFETs
C. SITs and MOSFETs
D. None of these

Categories Power Electronics
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