The output voltage of a rectifier is:
Correct answer: B. Pulsating
- A. Smooth
- B. Pulsating
- C. Perfectly direct
- D. Alternating
Explanation
A rectifier is used to convert alternating current to pulsating direct current not smooth direct current. Perfectly direct current will have fixed magnitude and fixed direction of current. This is not true for the output of a rectifier. Hence, option B is correct.
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About Alternating Current
Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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