Rectification and power supplies

Question 1 of 9

Converting a.c. to d.c. is called

A. rectification B. amplification C. modulation D. induction

Question 2 of 9

Half-wave rectification uses

A. one diode B. four diodes C. no diodes D. two capacitors only

Question 3 of 9

A half-wave rectifier uses

A. one diode B. four diodes C. a transistor only D. a transformer only

Question 4 of 9

Full-wave rectification makes use of

A. both halves of the a.c. cycle B. only the positive half C. only the negative half D. no part

Question 5 of 9

The ripple in a rectified output is reduced by

A. a larger smoothing capacitor B. a smaller capacitor C. removing diodes D. higher frequency transformer only

Question 6 of 9

A bridge rectifier uses

A. two diodes B. four diodes C. one diode D. six capacitors

Question 7 of 9

A Zener diode in a power supply is used for

A. voltage regulation B. rectification only C. amplification D. oscillation

Question 8 of 9

A capacitor connected across a rectifier output is used to

A. smooth the d.c. output B. increase ripple C. reverse current D. step up voltage

Question 9 of 9

In a power supply, a capacitor placed across the output of a rectifier

A. smooths the output voltage B. increases the ripple C. changes DC to AC D. blocks all current

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