The ratio of active power to apparent power is known as __________ factor.

Which of the following colour has wavelength between green and orange?

A load resistance R_L is supplied from a dc voltage source of resistance R. Maximum power transfer to the load occurs when which of the following condition is satisfied?

Voltage and current in a single- phase ac circuit are given by (50+j20) V and (20+j50) A respectively. What is the active power consumed in the circuit?

What is the magnetic field strength required to produce a flux density of 1mWb/m² in air?

Two inductive coils which are close to each other have a mutual inductance of 0.6 H. Current through one coil is increased from 1 A to 6 A in 0.03 s. The voltage induced in the other coil is:

A star connected resistive network with 20Ω in each phase is supplied with a three-phase ac source of 400 V. What is the total power consumed in the circuit?

An 8 kW single phase load at power factor of 0.8 leading is supplied from a single- phase ac supply. Reactive power drawn from the source is:

Power loss and voltage drop respectively, in the 2Ω resistor is

What is the unit of magnetizing force?

What is the total number of electrons that pass through a conductor in 2 s, if the current through it is 80 mA?