Mechanical Aptitude Basic Electrical Circuits Questions and Answers

Question 1

In a simple series circuit, if a 12-volt battery is connected across two resistors of 6 ohms and 3 ohms, what is the total current flowing through the circuit?

Accepted Answer

1.33 A

Answer

0.75 A

Answer

2.0 A

Answer

4.0 A

Question 2

Which of the following components is specifically designed to oppose the flow of electric current?

Accepted Answer

Resistor

Answer

Capacitor

Answer

Inductor

Answer

Diode

Question 3

Three light bulbs are connected in parallel to a power source. If one of the bulbs burns out, what happens to the other two bulbs?

Accepted Answer

They remain lit with the same brightness.

Answer

They both go out.

Answer

They both get brighter.

Answer

They both get dimmer.

Question 4

A circuit has a voltage of 24V and a resistance of 6Ω. What is the power consumed by the circuit?

Accepted Answer

96 Watts

Answer

4 Watts

Answer

144 Watts

Answer

0.25 Watts

Question 5

What is the primary function of a fuse in an electrical circuit?

Accepted Answer

To protect the circuit from excessive current

Answer

To store electrical charge

Answer

To increase the voltage

Answer

To convert AC to DC

Question 6

If you have two resistors, R1 and R2, connected in parallel, how do you calculate the total equivalent resistance (Rt)?

Accepted Answer

Rt = (R1 * R2) / (R1 + R2)

Answer

Rt = R1 + R2

Answer

Rt = R1 - R2

Answer

Rt = 1/R1 + 1/R2