60 thyrsistors are connected in series and parallel to form a 10 KV and 5.5 KA switch. Each thyristor is rated for 1.2 KV, 1 KA. The no. of parallel path are 6. The efficiency of the switch is______________________?

Related Mcqs:

Let of a thyristor Vc1, Vc2, Vc3 are forward break over voltage for gate current Ig1, Ig2, Ig3 respectively. Then________________?

A. Vc1 > Vc2 > Vc3 when Ig1 > Ig2 > Ig3. B. Vc1 > Vc2 > Vc3 when Ig1 < Ig2 < Ig3. C. Vc1 = Vc2 = Vc3 any value of Ig. D. Vc1 > Vc2 > Vc3 when Ig1 ≥ Ig2 &Atil...

During which time maximum conduction spreading take place in the thyristor during turn ON?

A. Delay time B. Spread time C. Rise time D. Same for every case...

The switching function of semiconductor devices can be characterized with___________?

A. Duty ratio only B. Frequency only C. Duty ratio and frequency D. Duty ratio, frequency and time delay...

In a three phase converter, the number of notches per cycle is____________?

A. One B. Three C. Six D. Nine...

Harmonics in 3 phase inverters can be reduced by using___________?

A. Passive filter B. Active filter C. Both passive and active filters D. None of these...