Ramsay Test Electrical 5

Question 1

What is the current through a 120-volt circuit with a 60-ohm load?

Accepted Answer

2 amperes

Answer

By Ohm's law, I = V/R = 120/60 = 2 amperes.

Question 2

Capacitance is measured in:

Accepted Answer

Farads

Answer

Capacitance is measured in farads.

Question 3

What is the main advantage of higher voltage for power transmission?

Accepted Answer

Lower current and reduced line losses

Answer

Higher voltage lowers current for the same power, cutting I-squared-R losses.

Question 4

A normally open relay contact will:

Accepted Answer

Close when the coil is energized

Answer

A normally open contact closes when the relay coil is energized.

Question 5

Which law states the sum of currents entering a node equals the sum leaving?

Accepted Answer

Kirchhoff's Current Law

Answer

Kirchhoff's Current Law states current into a node equals current out.

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