Q. In rectifier circuits, the rms value of ac component of output voltage is equal to

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Q. A UJT exhibits negative resistance characteristics when

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Q. In rectifier circuits, ripple factor RF and form factor FF are related as

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Q. If we connect two silicon unilateral switches in anti- parallel we get

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Q. A single phase half wave rectifier is feeding a resistive load. As firing angle is increased

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Q. A cycloconverter for single phase operation has

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Q. A chopper is a high efficiency circuit.

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Q. The difference between resonant commutation and self commutation is

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Q. Which of these devices have four layers?

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Q. When UJT is used for thyristor gate signal, the output of UJT is

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Q. The stud in a stud mounted SCR acts as

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Q. In a single phase full wave regulator feeding R-L load, short gate pulse are not suitable.

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Q. Half bridge and full bridge inverters of one type use different commutation methods.

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Q. Assertion (A): An ac regulator uses natural commutation

Reason (R): An ac regulator can be used for static on load tap changing of transformer.

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Q. When a UJT is used as a relaxation oscillator the current should be

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Q. In auxiliary commutated chopper, the charging and discharging time of capacitor

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Q. Which chopper circuit uses saturable reactor?

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Q. A single phase full bridge inverter for R-L loads needs

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Q. In the basic series inverter circuit, the source current has

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Q. Thyristors connected in series need static and dynamic stabilizing circuits.

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