Ramsay Test Electrical 4

Question 1

What is the power dissipated by a 10-ohm resistor carrying 2 amperes?

Accepted Answer

40 watts

Answer

Power equals I squared times R, so 2^2 x 10 = 40 watts.

Question 2

An inductor opposes changes in:

Accepted Answer

Current

Answer

An inductor resists changes in current by inducing an opposing voltage.

Question 3

Which of these is a semiconductor device that conducts in only one direction?

Accepted Answer

Diode

Answer

A diode allows current to flow in one direction only.

Question 4

What does GFCI stand for?

Accepted Answer

Ground Fault Circuit Interrupter

Answer

A GFCI is a Ground Fault Circuit Interrupter that trips on small leakage currents.

Question 5

In a three-phase system, the phases are typically separated by:

Accepted Answer

120 degrees

Answer

Three-phase power has phases offset by 120 electrical degrees.

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