Ramsay Test Electrical Knowledge 4

Question 1

What is the purpose of a GFCI outlet?

Accepted Answer

To cut power when it detects a ground fault

Answer

A GFCI trips quickly when current leaks to ground, preventing shock.

Question 2

In a 240 V single-phase residential supply, how is the voltage typically derived?

Accepted Answer

Two 120 V legs out of phase

Answer

Two opposite 120 V hot legs combine to provide 240 V.

Question 3

What does an inductor oppose changes in?

Accepted Answer

Current

Answer

An inductor resists changes in current by storing energy in a magnetic field.

Question 4

What happens to total resistance when you add more resistors in series?

Accepted Answer

It increases

Answer

Series resistances add directly, so total resistance rises.

Question 5

A diode primarily allows current to flow in how many directions?

Accepted Answer

One

Answer

A diode conducts in only one direction and blocks the reverse.

Ramsay Test Practice Test