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

• To store electrical energy

• To amplify signals

• To convert AC to DC

• To allow current to flow in one direction

Which type of semiconductor material has an excess of holes?

• N-type

• P-type

• Intrinsic

• Extrinsic

What is the typical forward voltage drop for a silicon diode?

• 0.7 volts

• 1.5 volts

• 0.3 volts

• 1.0 volts

What does the term 'doping' refer to in semiconductor technology?

• Removing impurities to enhance performance

• Coating semiconductors with a protective layer

• Testing the electrical properties of materials

• Adding impurities to alter conductivity

Which of the following is a characteristic of a transistor?

• It can only amplify signals

• It is a type of diode

• It has three terminals: emitter, base, collector

• It operates only in digital circuits

What is the main purpose of an operational amplifier?

• To convert AC to DC

• To act as a switch in circuits

• To amplify the difference between two input signals

• To store electrical energy

Which type of transistor uses electric fields to control current flow?

• Light Emitting Diode (LED)

• Silicon Controlled Rectifier (SCR)

• Field-Effect Transistor (FET)

• Bipolar Junction Transistor (BJT)

What is the function of a logic gate in digital circuits?

• To convert analog signals to digital

• To perform logical operations on binary inputs

• To store data

• To amplify electrical signals

What happens to a diode in reverse bias?

• It generates heat

• It conducts current freely

• It blocks current flow

• It amplifies the signal

Which of the following materials is commonly used in semiconductor devices?

• Iron

• Aluminum

• Silicon

• Copper