Power Electronics Mcqs


Q.  Typical range of thyristor turn OFF time is______________?

a. 3 – 10 µs
b. 3 – 50 µs
c. 3 – 100 µs
d. 3 – 500 µs


ANSWER: See Answer
 
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MCQs:  Thermal voltage VT can be given by____________?
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MCQs:  What happen due to high di / dt____________?
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MCQs:  What is used to protect a thyristor from high di / dt conditions__________?
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MCQs:  Compared to transistor, _________ have lower on state conduction losses and higher power handling capability?
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MCQs:  Materials used in heat sink should have_____________?
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MCQs:  A thyristor can termed as__________?
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MCQs:  Which of the following is used in heat sink_____________?
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MCQs:  How can we protect SCR from thermal conditions _____________?
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MCQs:  Thyristor is nothing but a____________?
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MCQs:  Gate circuit or triggering circuit of a thyristor is
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MCQs:  After proper turn on of thyristor____________?
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MCQs:  SCR will be turned off when anode current is_______________?
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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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