Ramsay Test Electrical 2

Question 1

What is the total resistance of two 10-ohm resistors connected in parallel?

Accepted Answer

5 ohms

Answer

Equal parallel resistors give half the value, so 10/2 = 5 ohms.

Question 2

Which device protects a circuit by melting when current exceeds a rated value?

Accepted Answer

Fuse

Answer

A fuse contains a metal element that melts to open the circuit during overcurrent.

Question 3

In a purely resistive AC circuit, the voltage and current are:

Accepted Answer

In phase

Answer

Resistance does not shift phase, so voltage and current peak together.

Question 4

What unit measures electrical power?

Accepted Answer

Watt

Answer

Power is measured in watts, the product of volts and amperes.

Question 5

A step-down transformer has more turns on which winding?

Accepted Answer

Primary

Answer

A step-down transformer has more primary turns to lower the secondary voltage.

Ramsay Test Practice Test