Understanding Diodes and Rectifiers

What is the primary function of a diode in an electrical circuit?

• To amplify signals

• To allow current to flow in one direction only

• To store electrical energy

• To convert AC to DC

Which material is most commonly used to make diodes?

• Copper

• Aluminium

• Silicon

• Iron

In a half-wave rectifier, what is the purpose of the diode?

• To increase the frequency of the input signal

• To block the negative half of the AC waveform

• To convert DC to AC

• To store charge

What is the peak inverse voltage (PIV) in a half-wave rectifier?

• The maximum voltage the diode can withstand in reverse bias

• The average output voltage of the rectifier

• The voltage drop across the diode in forward bias

• The input AC voltage

Which of the following is a disadvantage of a half-wave rectifier?

• It requires a transformer

• It has a low ripple factor

• It has a low efficiency

• It produces a pure DC output

What is the main application of a half-wave rectifier?

• In high-frequency applications

• In low-power devices

• In battery charging circuits

• In audio amplifiers

A transformer...?

• Steps up the AC voltage to create a higher AC output for DC supplies..

• Is used to determine the polarity of the power supply

• Steps down the AC voltage to create a lower AC output for DC supplies..

• Is smaller than a resistor.

Which component is often added to a rectifier circuit to smooth the output voltage?

• Resistor

• Inductor

• Capacitor

• Transformer