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Subject Revision:Power Electronics Quiz
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Question 1
In a buck-boost converter circuit, determine the time for which the switch should be kept open in order to produce an output voltage of magnitude 5 V from a source voltage of 12 V. The switching frequency is 20 kHz.
Question 2
A current signal with harmonics is supplied to an induction motor. Which of the following harmonic will create torque problems in the motor?
Question 3
For the given boost converter circuit, determine the average inductor current when the duty cycle is 0.75, assuming ideal components.
Question 4
A dc chopper is built employing an electronic switch as shown below. Determine the power absorbed by the switch. Assume switch to be ideal.
Question 5
Below figure shows a switched-capacitor converter based chopper. Switch 1 is closed to charge the capacitor. It is then opened and switch 2 is closed to produce the output voltage. Determine the output voltage of the converter if a source voltage of 9 V is applied to the converter.
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Nov 21ESE & GATE EE