Fundamental of Electrical Engineering MCQs

Which of following is not a power transistor:

A. IGBTs
B. COOLMOS
C. TRIAC
D. SITS

Which of following is normally ON device:

A. SIT
B. BJT
C. TRIAC
D. IGBT

Typical range of thyristor turn OFF time is:

A. 3 – 10 µs
B. 3 – 50 µs
C. 3 – 100 µs
D. 3 – 500 µs

Power transistor are type of:

A. B.JTs
B. MOSFETs
C. IGBTs
D. All of above

A GTO can be turned on by applying:

A. Positive gate signal
B. Positive drain signal
C. Positive source signal
D. None of these

SITH is also known as:

A. Filled controlled diode
B. Filled controlled rectifier
C. Silicon controlled rectifier
D. None of these

The typical time of rising time lies between:

A. 10 – 20 µs
B. 40 – 60 µs
C. 1 – 4 µs
D. 90 – 100 µs

Maximum power loss occurs during:

A. delay time
B. rise time
C. spread time
D. all

A power MOSFET has three terminals called:

A. Collector, emitter and gate
B. Drain, source and gate
C. Drain, source and base
D. Collector, emitter and base

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