Alternating Current MCQ - Electrician (Set-1) with Answers

Power Factor = Real Power/Apparent Power, or p.f. = W/VA.
The cosine of the resulting angle between the current and voltage is the power factor.

The resistance across an open circuit is equal to infinity. Open circuits are represented as a broken wire. For calculating an equivalent resistance, a resistor connected to the circuit at only one node is open.

Henry is the unit of either self-inductance or mutual inductance, abbreviated as H, and named for the American physicist Joseph Henry.

Power is dissipated only in the Resistor. Capacitor and Inductor only stores energy. So the power dissipation of a pure inductor is Zero.