Explore topic-wise MCQs in Power Electronics Question and Answers Diode Circuits-1.

This section includes 5 Mcqs, each offering curated multiple-choice questions to sharpen your Power Electronics Question and Answers Diode Circuits-1 knowledge and support exam preparation. Choose a topic below to get started.

1.

The time constant of a series RL circuit ( ) is given by

A. R/L
B. L/R
C. RC
D. 1/RL
Answer» B. L/R
Discussion
2.

For a diode circuit the voltage across the capacitor is given by Vc(t)= Vs(1-e(-t/RC))

A. nThen the initial rate of change of capacitor voltage is given by
B. 0
C.
D. Vs x RC
E. Vs/RC
Answer» E. Vs/RC
Discussion
3.

A circuit is so formed such that source-R-L-diode-switch are all in series. Consider the initial current in L to be zero. The diode is so connected that it is forward biased when switch is closed.When the switch is closed,

A. the current will decay exponentially & the voltage will increase exponentially
B. the current will increase exponentially & the voltage will decay exponentially
C. the current will fall to zero & the voltage both will decay exponentially
D. the voltage and the current both remain constant
Answer» C. the current will fall to zero & the voltage both will decay exponentially
Discussion
4.

The time constant of a series RC circuit ( ) is given by

A. R/C
B. C/R
C. RC
D. 1/RC
Answer» D. 1/RC
Discussion
5.

An ideal diode has _________ &__________

A. some forward voltage drop, some reverse recovery time
B. high switching losses, high reverse voltage drop
C. no forward voltage drop, negligible reverse recovery time
D. no reverse recovery time, high leakage current
Answer» D. no reverse recovery time, high leakage current
Discussion