Power Electronics Mcqs


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

a. IGBT
b. FCT
c. MCT
d. GTO


ANSWER: See Answer
 
No explanation is available for this question!
MCQs:  The capacitance of reversed bised junction J2 in a thyristor is CJ2 = 20 pF and can be assumed to be independant of the off state voltage. The limiting value of the charging current to turn on the thyristor is 16 mA. What is the critical value of dv/dt?
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MCQs:  BCT is used for____________?
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MCQs:  Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then________________?
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MCQs:  Which of following devices has highest di/dt and dv/dt capability?
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MCQs:  Which triggering is the most reliable____________?
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MCQs:  Leakage current flows through the thyristor in_________?
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MCQs:  Which of the following is disadvantage of fast recovery diodes?
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MCQs:  When a large surge current of very short duration flows through a thyristor then which one of the following device will operate to protect the thyristor ___________?
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MCQs:  A power semiconductor may undergo damage due to____________?
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MCQs:  CB used for over current protection of thyristor operates when the fault current is__________?
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MCQs:  If the anode current is 800 A, then the amount of current required to turn off the GTO is about____________?
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MCQs:  What is used to protect the SCR from over current ________________?
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MCQs:  Under normal operating condition voltage clamping device offers impedance of_________?
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MCQs:  Which semiconductor device acts like a diode and two transistor?
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MCQs:  Under over voltage condition impedance offered by the voltage clamping device is__________?
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MCQs:  The latching current of GTO should be of order
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MCQs:  The maximum di/dt in a SCR is____________?
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MCQs:  Example of a voltage clamping device______________?
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MCQs:  Switching frequency of SITH is____________?
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MCQs:  Practical way of obtaining static voltage equalization in series connected SCRs is by the use of____________?
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