Power system

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.

Why the power system is divided into several protections zones?

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.

On which part of the power system, the occurrence of failure / abnormal condition is more?

On which part of the power system the occurrence of failure / abnormal condition is more? The probability of occurrence of failure / abnormal condition is more in the on the power line. The reason is nothing other than its length and operating conditions. It is highly affected by the weather conditions and other atmospheric … Read more

Comparision of conventional energy resources

Conventional energy is obtained from the conventional energy resources such as coal, diesel, gas and nucleus. These are non-renewable resources and may exhaust in few decades if consumed at the current rate. The burning of fossil fuels produces harmful gases such as nitrous oxide, carbon monoxide, sulphur-di-oxide etc and pollutes the environment. The comparison of various … Read more

How do Fuel Cells Work?

Fuel cells cleanly and efficiently convert chemical energy from hydrogen-rich fuels into electrical power and usable high-quality heat in an electrochemical process that is virtually absent of pollutants. What are fuel cells? Fuel cells are non-polluting energy resources. It cleanly and efficiently converts chemical energy from hydrogen-rich fuels into electrical power. Each fuel cell consists … Read more