Electrical Engineering MCQs on Transformer The efficiency of a transformer will be maximum if The efficiency of a transformer will be maximum if Correct answer: 2. Copper losses = iron losses The efficiency of two identical transformers under load conditions can be determined using which test The efficiency of two identical transformers under load conditions can be … Read more
Electrical Engineering MCQs on Transformer The complete circle diagram of induction motor can be drawn with the help of data found from The complete circle diagram of induction motor can be drawn with the help of data found from Correct answer: 4. All of above tests Insertion of resistance in the rotor of an induction motor to … Read more
Electrical Engineering MCQs on Transformer When a given transformer runs at its rated voltage but reduced frequency, its When a given transformer runs at its rated voltage but reduced frequency, its Core flux density is increased Core flux density is reduced Flux density remains unaffected Iron losses are reduced Correct answer: 1. Core flux density … Read more
Electrical Engineering MCQs on Transformer The property that is not necessarily desirable in the material for transformer core The property that is not necessarily desirable in the material for transformer core High permeability High thermal conductivity Low hysteresis loss Mechanical strength Correct answer: 2. High thermal conductivity If a transformer is continuously operated the maximum … Read more
Electrical Engineering MCQ on Synchronous Motor If field winding of an unloaded salient pole synchronous motor is open circuited, the motor will If field winding of an unloaded salient pole synchronous motor is open circuited, the motor will Burn with dense smoke Function as static condenser Run as induction motor Stop Correct answer: 4. Stop … Read more
Electrical Engineering MCQ on Synchronous Motor Operating speed of synchronous motor can be changed to new fixed value by Operating speed of synchronous motor can be changed to new fixed value by Changing frequency Changing the load Changing the supply voltage Using brakes Correct answer: 1. Changing frequency The power factor of a synchronous motor … Read more
Electrical Engineering MCQ on Effect of increasing the load on a synchronous motor running with normal excitation is to
Electrical Engineering MCQ on An over-excited synchronous motor takes
Electrical Engineering MCQ on Which of the following motors will be used in electric clocks
Electrical Engineering MCQ on Stability of synchronous machine