GATE 2025 Power Electronics Foundation Quiz 54

The circuit shown below, the conduction time of T is _______(μsec).

Assume: L = 1 mH, I_L(0^–) = 0 A, C = 1 μF and V_C(0^–) = 100 V

For the following circuit:

The switch is closed at t = 0, the capacitor has initially charged to 50 V polarity as shown in the figure above. Find the peak value of diode current______ A.

The circuit employing class C commutation has V_s= 200V, R₁ = 100 Ω, R₂ = 150Ω. The peak current through thyristor T₁ is ___?

In the current Commutated chopper shown below

Thyristor T₁ is conducting a load current I₀ when thyristor T_A is turned off with capacitor polarity as shown, the capacitor I_c would flow through

Consider the circuit shown in the figure below, the following parameters are C = 40 µF and L = 20 µH. The initially capacitor voltage is equal to the source voltage V_s = 200V dc. Find the possible minimum and maximum turn-off time period of main thyristor?