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RVUNL EE Power Electronics Quiz 3

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Question 1

A dc to dc transistor chopper supplied from a fixed voltage dc source feeds a fixed resistive inductive load and a freewheeling diode the chopper operates at 1 kHz and 50% duty cycle. Without changing the value of the average dc current through the load. If it is desired to reduce the ripple content of the load current, the control action need will be to

Question 2

Which of the following chopper posses below characteristic.

Question 3

A step up chopper is required to deliver a voltage of 330 V from 110 V dc source. If the conduction time of chopper is 200 µs, then turn off time for chopper is

Question 4

The following chopper shown in figure can be formed by connecting

Question 5

Two quadrant chopper consist of

Question 6

A step up chopper has input voltage of 200 V and output voltage of 600 V. If conducting time of thyristor chopper is 100 msec. Compute the pulse width of output voltage.

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Jun 1AE & JE Exams