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Applied Electricity

Applied Electricity · Quick practice · answer shown after each question

A.C. theory

Question 1 of 10

Question 1 of 10

Impedance is measured in

Question 2 of 10

Question 2 of 10

An AC supply has a frequency of 50 Hz. What is its period?

Question 3 of 10

Question 3 of 10

The frequency of an a.c. supply with period 0.02 s is

Question 4 of 10

Question 4 of 10

In a purely inductive circuit, current

Question 5 of 10

Question 5 of 10

Reactive power is measured in

Question 6 of 10

Question 6 of 10

The period of a 50 Hz supply is

Question 7 of 10

Question 7 of 10

In a purely inductive circuit, the current

Question 8 of 10

Question 8 of 10

The peak value of a 230 V r.m.s. supply is about

Question 9 of 10

Question 9 of 10

Power factor is the ratio of

Question 10 of 10

Question 10 of 10

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

Questions written by OtisamLMS in the style of the WASSCE. They are not WAEC past questions.