Question

Calculate the output voltage of the Boost converter if the supply voltage is 156 V and duty cycle value is .4.

(a) 260 V

(b) 264 V

(c) 261 V

(d) 268 V

I have been asked this question in an interview for internship.

This interesting question is from Solid-State Switching Circuits topic in section Introduction to Solid-State Switching Circuits of Electric Drives

Answer 1

Right answer is (a) 260 V

Easy explanation: The output voltage of the boost converter is Vo = Vin×(1-D)=156×1.66=260 V. The value of the duty cycle is less than one which makes the Vo > Vin. The boost converter is used to step up the voltage.