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Power Electronics Quiz

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Questions and Answers

What is the primary purpose of power electronics according to the definition provided?

To store electric power for future use

To increase the efficiency of power transmission

To generate electric power from natural resources

To process and control the flow of electric power for user loads (correct)

What is the voltage and frequency of the supply from TNB mentioned in the text?

340Vpeak, 60Hz

120Vrms, 50Hz

240Vrms, 60Hz

240Vrms, 50Hz (correct)

What electronic component is suggested to convert AC to DC for charging a notebook?

Capacitor

Transformer

Fullwave rectifier

Simple halfwave rectifier (correct)

What is the formula for the average output voltage $V_{out}$ using a halfwave rectifier?

$V_{out} = \frac{V_m}{\pi}$ Signup and view all the answers

How can the output DC voltage be varied after conversion?

By controlling the firing angle, $\alpha$ Signup and view all the answers

Power electronics is used to ______, process, and control the flow of electric power

convert Signup and view all the answers

The basic block diagram in the text represents a ______ system

simple PE Signup and view all the answers

The text mentions that TNB supplies 240Vrms, 50Hz which is equivalent to ______ peak voltage

340V Signup and view all the answers

To obtain a fixed DC voltage for charging a notebook, a ______ rectifier can be used

simple halfwave Signup and view all the answers

By adjusting the ______ angle, the output DC voltage can be controlled

firing Signup and view all the answers