SCR Commutation Techniques Objective Questions – Part 1

In case of class B commutation or resonant-pulse commutation with L = 5 μH and C = 20 μC with the initial voltage across the capacitor (Vs) = 230 V. Find the conduction time for auxiliary thyristor.

__________ commutation technique is commonly employed in series inverters.

The natural reversal of ac supply voltage commutates the SCR in case of

The class A commutation or load commutation is possible in case of

An SCR is connected in series with L = 5 mH and C = 20 μF. Find the resonant frequency of the circuit.

The type of commutation in which the pulse to turn off the SCR is obtained by separate voltage source is

The type of commutation when the load is commutated by transferring its load current to another incoming thyristor is

The thyristor turn-off requires that the anode current

In case of class A type commutation or load commutation with low value of R load the

In case of class B commutation or resonant-pulse commutation with L = 5 μH and C = 20 μC with initial voltage across the capacitor (Vs) = 230 V. Find the peak value of resonant current.