CET Electronic Components and Devices

Question 1

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

Accepted Answer

To limit the current flow.

Answer

To amplify the signal.

Answer

To store electrical energy.

Answer

To regulate the voltage.

Question 2

What is the purpose of a diode in a circuit?

Accepted Answer

To allow current flow in one direction only.

Answer

To store charge.

Answer

To block current flow.

Answer

To amplify the signal.

Question 3

What does a capacitor do in an electronic circuit?

Accepted Answer

Stores and releases electrical energy.

Answer

Regulates current flow.

Answer

Amplifies the signal.

Answer

Converts AC to DC.

Question 4

What is an inductor used for in an electronic circuit?

Accepted Answer

To store energy in a magnetic field.

Answer

To block high-frequency signals.

Answer

To increase current flow.

Answer

To decrease voltage.

Question 5

What is the function of a transistor in a circuit?

Accepted Answer

To amplify or switch signals.

Answer

To convert AC to DC.

Answer

To store electrical energy.

Answer

To control the current flow.

Question 6

How do you calculate the total resistance in a series circuit?

Accepted Answer

Answer

R_total = R1 + R2 + R3 + ...

Answer

R_total = R1 * R2 * R3

Answer

R_total = 1 / (R1 + R2 + R3)

Answer

R_total = R1 + (R2 * R3)

Question 7

What is the typical application of a Zener diode?

Accepted Answer

To regulate voltage by allowing reverse current flow.

Answer

To block reverse current.

Answer

To amplify signals.

Answer

To store energy.

Question 8

What does a multimeter measure?

Accepted Answer

Voltage, current, and resistance.

Answer

Only current.

Answer

Only resistance.

Answer

Only voltage.

Question 9

What is the purpose of a fuse in an electronic circuit?

Accepted Answer

To protect the circuit from excessive current.

Answer

To regulate current.

Answer

To increase voltage.

Answer

To amplify signals.