Electrical Power Concepts
What is Circuit Breaker ? Circuit breaker (CB) is an electrical switch which is used to protect electrical circuit from damage caused by excess current. The flow of excess current in power system is mostly due to overload or short circuit. Basic function of circuit breaker is to interrupt the flow of excess current during … Read more
In actual power system, we have to deal with high voltages and current. Let assume that we want to measure the large voltage and current flowing in the transmission line. In that case, ammeter and voltmeter required for the measurement would be of very high rating which are very costly and bulky. Moreover, there will … Read more
Although both AC and DC electric motor converts electric energy into mechanical energy, however their construction and way of functioning is different. AC refers alternating current which means the direction of current is reversing ( changing ) after every half cycle. DC simply means the current is flowing in one direction. DC motors are powered … Read more
In this article, we will look at some transformer interview questions & Answers which will helps you to know some more about transformers. Lets take a look at it. Q : 1 What are Ferromagnetic Materials ? Ferromagnetic materials have strong magnetic properties due to which these materials form a very strong magnetic field … Read more