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Power Electronics

Power Electronics
A UJT is sometimes called ___________ diode.

Double-base
High resistance
Single-base
Low resistance

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Power Electronics
The triac is ___________.

A four-terminal device
None of these
Like a bidirectional SCR
Not a thyristor

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Power Electronics
Which of the following is not a characteristic of UJT?

Negative resistance
Peak-point voltage
Bilateral conduction
Intrinsic stand off ratio

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Power Electronics
A single phase full bridge inverter can operated in load commutation mode in case load consist of

 RL.
 RLC underdamped.
 RLC overdamped.
 RLC critically damped.

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Power Electronics
When a UJT is turned ON, the resistance between emitter terminal and lower base terminal ___________

Is increased
None of these
Is decreased
Remains the same

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Power Electronics
Between the peak point and the valley point of UJT emitter characteristics we have ___________ region

Saturation
Negative resistance
Cut-off
None of these

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