Electronics Quiz

In a MOSFET, what type of charge carriers primarily constitute the channel current?

• Holes

• Electrons

• Protons

• Neutrons

What is the symbol of a diode in a circuit diagram?

• D

• R

• C

• L

Which type of diode is commonly used in radio frequency (RF) applications?

• Zener diode

• Tunnel diode

• Varactor diode

• Schottky diode

What is the primary function of a diode?

• To amplify signals

• To store charge

• To regulate voltage

• To allow current flow in one direction only

What is the typical voltage drop across a silicon diode when forward-biased?

• 0.3 volts

• 0.7 volts

• 1.4 volts

• 2.1 volts

The Early effect in a BJT refers to:

• The variation in collector current with collector-emitter voltage

• The variation in base current with base-emitter voltage

• The variation in emitter current with emitter-base voltage

• The variation in transistor gain with temperature

What is the function of the emitter resistor in a BJT amplifier circuit?

• To provide biasing to the base terminal

• To limit the base current

• To provide negative feedback

• To prevent thermal runaway

What is the advantage of a bridge rectifier over a half-wave rectifier?

• Higher output voltage

• Lower output ripple

• Simpler circuitry

• Lower cost

What is the purpose of a snubber diode in a rectifier circuit?

• To prevent reverse breakdown of the diode

• To regulate the output voltage

• To protect other components from voltage spikes

• To increase the output current

The term "Early voltage" in a BJT refers to:

• The voltage at which the transistor enters saturation

• The voltage at which the transistor enters cutoff

• The voltage at which the collector current becomes zero

• The voltage at which the collector current becomes infinite