WTMA - Wiesen Test of Mechanical Aptitude Basic Electrical Principles Questions and Answers

Question 1

In a simple electrical circuit, if the voltage is doubled and the resistance remains constant, what happens to the current?

Accepted Answer

It doubles.

Answer

It is halved.

Answer

It is quadrupled.

Answer

It remains the same.

Question 2

Which of the following materials is the best electrical insulator?

Accepted Answer

Rubber

Answer

Copper

Answer

Aluminum

Answer

Steel

Question 3

Imagine two light bulbs are connected in a series circuit to a battery. If one of the light bulbs burns out (the filament breaks), what will happen to the other light bulb?

Accepted Answer

It will go out.

Answer

It will get brighter.

Answer

It will get dimmer.

Answer

It will stay the same brightness.

Question 4

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

Accepted Answer

To control or limit the flow of current

Answer

To store electrical energy

Answer

To increase the flow of current

Answer

To generate voltage

Question 5

In a parallel circuit with three resistors of different values connected to a voltage source, which of the following statements is true?

Accepted Answer

The voltage across each resistor is the same.

Answer

The current is the same through all three resistors.

Answer

The total resistance is the sum of the individual resistances.

Answer

The power dissipated by each resistor is identical.

Question 6

Electrical power is most commonly measured in which unit?

Accepted Answer

Watts

Answer

Volts

Answer

Amperes

Answer

Ohms