Ramsay Test Electrical Knowledge 5

Question 1

What is the result of a short circuit?

Accepted Answer

A sudden large increase in current

Answer

A drop in current to zero

Answer

An increase in resistance

Answer

A rise in voltage only

Question 2

Which material is the best electrical conductor among these?

Accepted Answer

Copper

Answer

Rubber

Answer

Glass

Answer

Ceramic

Question 3

What does capacitance measure?

Accepted Answer

The ability to store electric charge

Answer

The opposition to current

Answer

The rate of charge flow

Answer

The magnetic field strength

Question 4

In an AC waveform, what does RMS voltage represent?

Accepted Answer

The equivalent effective DC heating value

Answer

The peak voltage

Answer

The average of zero

Answer

The frequency

Question 5

What is the function of a relay?

Accepted Answer

To use a small signal to switch a larger circuit

Answer

To store charge

Answer

To rectify AC

Answer

To measure current

Question 6

If voltage is held constant and resistance doubles, what happens to current?

Accepted Answer

It halves

Answer

It doubles

Answer

It stays the same

Answer

It quadruples

Question 7

Why must conductors be properly sized for their load current?

Accepted Answer

To prevent overheating and fire

Answer

To increase voltage

Answer

To reduce frequency

Answer

To improve color coding