UNIT 1 QUIZ 1: Semiconductor Devices

What is the purpose of a half wave rectifier?

• To store electrical energy

• To convert AC to DC

• To amplify the signal

• To convert DC to AC

What is the purpose of a full wave rectifier?

• To store electrical energy

• To amplify the signal

• To convert DC to AC

• To convert AC to DC

How does a half wave rectifier convert AC to DC?

• By converting the AC wave to a square wave

• By allowing only one half of the AC wave to pass through

• By allowing both halves of the AC wave to pass through

• By amplifying the AC wave

How does a full wave rectifier convert AC to DC?

• By using a series circuit to convert only one half of the AC input signal into a pulsating DC output

• By using a transformer to convert AC into a pulsating AC output

• By using a bridge circuit to convert both halves of the AC input signal into a pulsating DC output.

• By using a parallel circuit to convert AC into a continuous DC output

What is the function of a Zener diode in a voltage regulator circuit?

• Convert AC to DC

• Regulate the output voltage

• Amplify the input voltage

• Reduce the output current

How does a Zener diode maintain a constant output voltage in a regulator circuit?

• By operating in the forward bias region

• By operating in the breakdown region

• By increasing the input voltage

• By decreasing the input current

What is the symbol of a Zener diode?

• Diode with zigzag line inside a square

• Diode with Z-shaped arrow inside a circle

• Diode with X-shaped arrow inside a triangle

• Diode with S-shaped arrow inside a hexagon

What happens to the current through a Zener diode when the voltage across it exceeds the breakdown voltage?

• The current through the Zener diode decreases significantly.

• The current through the Zener diode remains constant.

• The current through the Zener diode increases significantly.

• The Zener diode stops conducting current altogether.

What is the reverse breakdown voltage of a Zener diode?

• 5 to 8 volts

• 20 to 25 volts

• 3 to 5 volts

• 10 to 15 volts

What is the typical application of a Zener diode in electronic circuits?

• Controlling current flow in a circuit

• Voltage regulation and voltage reference

• Amplifying audio signals

• Generating electromagnetic waves