24. A step up chopper has load voltage of 600V and is sup- plied from a constant de source of 150V. If the OFF time of the chopper is 40 µs and desired output voltage is 300V find ON time of the chopper? (A) 5 µsec (C) 30 µsec (B) 10 usec (D) 40 µsec

1. For the above Boost converter, what is the duty cycle? a. 0.95    b.0.75    c. 0.25  d. None of the obove  2. For the above Boost converter, what are the average current flowing in the MOSFET and diode? a. 12A, 4A       b. 12A, 12A      c. 4A, 4A       d. 16A, 4A 3. For the above Boost converter, what is the peak switching current flow in the MOSFET and diode? a. 19.75A, 19.75A   b. 15.75A, 15.75A    C. 19.75A, 15.75A   d. None of this   4. what is the max voltage stress on the MOSFET and diode? a. 10V, 10V       b. 10V, 40V      c. 40V 40V,  d. none of this  5. what is the output voltage peak to peak ripple? a. 0.3V   b. 0.1V     c. 0.6V  d. none of the above

An unipolar PWM full bridge circuit has a Vr.rms of 125V at a duty cycle D1 of 0.7. What is Vd? What is Vo.rms?

The input voltage (vin) of the following circuit is a sinusoidal signal with an amplitude of 2Vrms,consider a silicon diode.graph the output voltage ?? and the current across the resistor.