In the circuit with ideal devices, the power MOSFET is operated with a duty cycle of 0.4 in a switching cycle with  and . The power delivered by the current source, in W, is __________ (round off to the nearest integer).

The steady state capacitor current of a conventional DC-DC buck converter, working in CCM, is shown in one switching cycle. If the input voltage is 30 V, the value of the inductor used, in mH, is ________ (round off to one decimal place).

A forced commutated thyristorized step-down chopper is shown in the figure. Neglect the ON-state drop across the power devices. Assume that the capacitor is initially charged to 50 V with the polarity shown in the figure. The load current  can be assumed to be constant at 10 A. Initially,  is  and  is OFF. The turn-off time available to  in microseconds, when  is triggered, is _______ (rounded off to the nearest integer).

In the DC-DC converter shown in the figure, the current through the inductor is continuous. The switching frequency is 500 Hz. The voltage  across the load is assumed to be constant and ripple free. The peak inductor current in amperes is ________(rounded off to the nearest integer).

The chopper circuit shown in figure (i) feeds power to a 5 A DC constant current source. The switching frequency of the chopper is . All the components can be assumed to be ideal. The gate signals of switches  and  are shown in figure (ii). Average voltage across the 5 A current source is

Fig. (i)

Fig. (ii)