Rectifiers and Resistors Quiz

Which type of rectifier uses only one half of the input AC cycle?

• Full-wave rectifier

• Bridge rectifier

• Half-wave rectifier

• Zener rectifier

How many diodes are used in a bridge rectifier?

• 1

• 2

• 3

• 4

The main function of a rectifier is to:

• Increase current

• Convert AC to DC

• Convert DC to AC

• Filter voltage

Which rectifier has higher efficiency?

• Half-wave

• Full-wave

• None of these

• Both are equal

What is the ripple frequency in a full-wave rectifier for 50 Hz input?

• 25 Hz

• 50 Hz

• 100 Hz

• 150 Hz

Which component is used to reduce ripple in rectifier output?

• Diode

• Capacitor

• Resistor

• Transistor

A diode allows current to flow in:

• Both directions

• No direction

• Only reverse direction

• Only forward direction

In reverse bias, a diode:

• Conducts heavily

• Doesn't conduct

• Burns

• Becomes forward biased

Which diode emits light when forward biased?

• Zener

• Tunnel

• LED

• Varactor

A transistor is used mainly for:

• Rectification

• Voltage dropping

• Amplification

• Filtering