Electrical Questions

Ten important things about DC Motors 1. DC motor is device which convert DC electrical energy into mechanical energy. Although a machine that converts DC power into mechanical power is known as DC motor and machine that converts AC power into mechanical power is known as AC motor. 2. DC motor works on the principle […]

1. What is Eddy current?      We have seen that whenever the flux, linking with a closed electric circuit changes, an EMF is induced in the circuit and a current flows, the value of which depends on the emf around the circuit and the resistance of the circuit. It is not necessary that the […]

Most important questions of DC generator 1. What is the need of Multiplex winding? This is one of the most important DC generator. With a simple wave winding, there are only two parallel path whereas for lap winding the number of parallel path is equal to number of poles. Thus in case of 10 pole […]

Differences between synchronous motor and induction motor? AC Motors are mainly of two types, one is synchronous motor and other is asynchronous motor. Asynchronous motor is also known as induction motor. Both Motors are widely used electric motors. Although there is a big list of differences between these two motor but here we will learn […]

1. What are the different methods of controlling voltage in AC supply system? The different methods used to control voltage in ac supply system are – excitation control at generating station and by using – tap changing Transformer – induction regulator – booster Transformers – series compensation – shunt compensation and – synchronous phase modifiers […]