Alternating Current

AC generators used to produce alternating current by converting

• kinetic energy into potential energy

• potential energy into electrical energy

• kinetic energy into electrical energy

• electrical energy into kinetic energy

AC generators works based on

• Faraday's Law

• Lenz Law

• Newton's Law

• electrostatic law

In AC generator, maximum emf generated at an angle of

• 0 and 90

• 90 and 180

• 90 and 270

• 180 and 360

The distance of the waveform travel in one cycle is referred to

• amplitude

• wavelength

• time

• frequency

The effective voltage value is

• 25%

• 50%

• 71%

• 90%

The average current/ voltage value will not be zero only if it is

• step up

• rectified

• amplified

• intensified

The resistor in an AC will cause

• no phase difference

• V lead I

• I lead V

• I lags V

Voltage leads the current in an AC generators can be referred to

• resistance

• capacitance

• inductance

The combination of resistance, capacitance and induntance is referred to

• impedance

• reactance

• angular frequency

• amplitude

High potential voltage produced by three-phase generators commonly used in

• filament

• X-ray tube

• transformer

• anode