UP polytechnic Lecturer (EE) Quiz 24

In context with Integral cycle control method in AC voltage controller:

In a thyristor circuit, the angle of conduction is changed by changing:

If the value of snubber capacitor is 0.1 μF and when short-circuited current through it is 10√2 A . Then dv/dt in V/μsec is:

Single phase Half wave voltage controller consist of

In a given 3-phase converter, the maximum current through the battery if the connected choke has a very high value of inductance & an internal resistance of 10ohm.

A 3-phase bridge rectifier has the average output voltage of 252 V. The

maximum value of phase voltage.

The circuit turn-off time for main Thyristor (T_m) is ____ μsec, for the given following commutation circuit.

In voltage commutated chopper, peak inverse voltages of semiconductors follows the relation

In circulating current type dual converter, even after maintaining ∝₁+∝₂= 180°, still there is some current between the converter. This current can be reduced using.

In case of non-circulating current type dual converter.