EIAT Basic Electrical Principles 2

Question 1

A circuit has a voltage of 120V and a resistance of 40 ohms. What is the power dissipated?

Accepted Answer

360 W

Answer

Power = V²/R = 120²/40 = 14400/40 = 360 W.

Question 2

Which type of circuit provides multiple paths for current to flow?

Accepted Answer

Parallel circuit

Answer

A parallel circuit provides two or more separate paths through which current can flow simultaneously.

Question 3

What happens to total resistance when resistors are added in parallel?

Accepted Answer

Total resistance decreases

Answer

Adding resistors in parallel always decreases total resistance because more current paths are available.

Question 4

What is the unit of electrical capacitance?

Accepted Answer

Farad

Answer

Capacitance is measured in farads (F), named after Michael Faraday.

Question 5

In an AC circuit, what does 'frequency' describe?

Accepted Answer

The number of complete cycles per second

Answer

Frequency is the number of complete AC cycles occurring per second, measured in hertz (Hz).

EIAT - Elevator Industry Aptitude Test Practice Test