Applied Electricity quick practice

Question 1 of 10

The instrument used to measure current is the

Question 2 of 10

The slip of an induction motor with synchronous speed 1,500 rpm running at 1,440 rpm is

Question 3 of 10

A device that cuts off supply when it detects current leaking to earth is the

Question 4 of 10

A Zener diode is mainly used for

Question 5 of 10

A transistor used as an amplifier

Question 6 of 10

An earth leakage circuit breaker protects people from

Question 7 of 10

The unit of electrical resistance is the

Question 8 of 10

The efficiency of a transformer with 960 W output and 1,000 W input is

Question 9 of 10

Switches in domestic wiring should be connected in the

Question 10 of 10

A Wheatstone bridge has arms 10 Ω, 20 Ω, 15 Ω and X. At balance with 10/20 = 15/X, X is