## Power Factor – Definition, Importance, Calculation and Correction techniques

In an AC power system, the power factor is a very important parameter that defines how efficiently electrical power is being utilized by the load. It is a rational number between -1 and 1 but has no unit. The p.f of a system depends on the type of load present, whether resistive, inductive, or capacitive. … Read more

## What is ammeter selector switch?

Ammeter selector switch is basically a normal three position switch. In large Electrical distribution panels, an ammeter is used to monitor the current through each line.

## Which is the most common fault occuring in the power system?

The most common fault occurring in the power system is  a Single line to ground fault. Almost 70 per cent of faults occurring is Single line to ground faults.

## What are the different faults occurring in the overhead transmission lines?

1.       Single line to ground fault.

2.       Line to line fault.

3.       Double line to ground fault.

4.       Line to line to line fault (Three phases are short-circuited)

5.       Three line to ground fault.