Question

1 ) Which loss is determined by no load test of 3 phase
induction motor? | 3 कला इंडक्शन मोटर के नो लोड टेस्ट से
कौन सी हानि निर्धारित होती है?​

Answer 1

Answer:

As the motor is running at no load, the total input power is equal to the constant iron loss, friction and windage losses of the motor.

Answer 2

Answer:

• This test measures the resistance and impedance of an induction motor's or shunt branch parameter's magnetizing route.
• A three-phase induction motor pulls power for core loss and windage-friction loss during the no-load test.
• The no-load test provides data on continuous losses, sometimes referred to as no-load losses, such as core loss, friction loss, and windage loss.
• When the rotor rotates at synchronous speed and there is no load torque, the no-load test is carried out.
• Rotor copper loss with no load is extremely low compared to its value.
• In this test, a little current is needed to generate enough torque. This test measures the resistance and impedance of an induction motor's or shunt branch parameter's magnetizing route.
• A three-phase induction motor pulls power for core loss and windage-friction loss during the no-load test.

SPJ3