At no load the speed is closest to its synchronous speed. This running speed reduces further when loaded towards its full load capacity, to about 5% for a moderately rated machine tojust more than 5% for smaller rated machine.
The current transformer is used for measuring the current. The specifications of the measuring class CT are given below. The Instrument Safety Factor (ISF) is a
The DC motor is most suitable for loads that demand a higher starting torque. When DC voltage is applied to the armature, the motor is
What is a relay Coil? The relay coil has many turns of copper wire wound around a bobbin in which the iron core is situated.
Windage is the name usually given to air resistance inside rotating electrical machines like generators or motors. Windage losses also occur in machines such as turbines and gearboxes. When
There are three types of current transformers which are used for various applications. 1. Metering Purpose2. Protection Purpose3. Special Protection Purpose The particular class of
Electric rotating machines are used for the conversion of energy. The motor converts electrical energy into mechanical energy, and the generator converts mechanical energy into
What is DC Motor? DC motor or Direct Current Motor converts electrical energy into mechanical energy. It is used to drive the mechanical loads. The
The rotor of the slip ring induction motor is connected to the external resistances. When the motor is started, the total external resistance gets added
The stator can either have a star or delta connection. Many motors have a winding scheme and coils with six connections that connect the windings