Power Systems

What is the GMR of a seven strands conductor in terms of radius r of an individual strand?

In a pure reactive circuit, the power factor is

Power factor is defined as the ratio of

In a series circuit consisting of resistance and reactance, power factor is defined as the ratio of

For a parallel circuit consisting of resistance and reactance the value of power factor is the ratio of

It is not easy to find the value of impedance in parallel circuit but power factor can be easily obtained as the ratio of

The power factor of a.c. circuit containing both a resistor and a capacitor is

In an ac circuit, a low value of reactive volt ampere compared with watts indicates

In a given ac circuit when power factor is unity the reactive power is

The capacitor of power factor correction are rated in terms of

Poor power factor results in all of the following except

For the same load, if the power factor of load is reduced it will

The power factor of an incandescent bulb is

Power factor of the magnetizing component of a transformer is

One of the reasons of for improving the power factor is

Another reason for improving the power factor is

Power factor improvement may be achieved by the use of

The advantage of using static capacitor to improve the power factor is because they

Many industrial tariffs penalize consumers whose power factor falls

Which of the following methods of generating electric power from the sea water is more advantageous