## AC Fundamentals, Circuit and Circuit Theory Inductance of coil

Is unaffected by the supply frequency
Increases with the increase in supply frequency
Decreases with the increase in supply frequency
Becomes zero with the increase in supply frequency

## AC Fundamentals, Circuit and Circuit Theory If two sinusoids of the same frequency but of different amplitudes and phase angles are subtracted, the resultant is

A sinusoid of half the original frequency
None of the listed here
A sinusoid of double the frequency
A sinusoid of the same frequency

## AC Fundamentals, Circuit and Circuit Theory The main cause of silting up a channel,

All of these
Non-regime section

## AC Fundamentals, Circuit and Circuit Theory Capacitive reactance is more when

Capacitance is more and frequency of supply is less
Capacitance is more and frequency of supply is more
Capacitance is less and frequency of supply is less
Capacitance is less and frequency of supply is more

## AC Fundamentals, Circuit and Circuit Theory In a pure capacitive circuit if the supply frequency is reduced to 1/2, the current will

Be doubled
Be reduced by half
Be reduced to one fourth
Be four times at high

## AC Fundamentals, Circuit and Circuit Theory All definitions of power factor of a series R-L-C circuit are correct except

Ratio of kW and kVA
Ratio of net reactance and impedance
Ratio of J and Z
Ratio of W and VA