Description : Explain power in single phase AC circuit.
Description : Define balanced and unbalanced load in three phase circuit.
Answer : Balanced Load: When all the imedances of 3 phases are equal in magnitude and of same nature then load is said to be balanced. Unbalanced Load: When all the imedances of 3 phases are not equal in magnitude and of different nature then load is said to be unbalanced.
Description : State any four applications of three phase circuits.
Answer : The application of three phase circuits are 1. Three phase circuit is used for power transmission over long distances. 2. Three phase circuit can produce rotating magnetic field 3. Three phase ... three phase Motors and Transformers. 4. Three phase circuit is used for power converters circuits.
Description : List any two methods of reactive power measurement in 3 phase circuit.
Answer : Methods of reactive power measurement in 3 phase circuit: (i) Two single phase wattmeter method (ii) One single phase wattmeter method
Description : Explain with neat circuit diagrams the procedures to perform no load and blocked rotor tests on three phase induction motor.