Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/3 1/√3 3 √3 1/3 1/√3 3 √3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power will be developed when back emf is All of these double the supply voltage. equal to supply voltage. half of the supply voltage. All of these double the supply voltage. equal to supply voltage. half of the supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the excitation is reduced, the power factor is unity power factor lagging power factor None of these leading power factor unity power factor lagging power factor None of these leading power factor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following machine will have maximum efficiency? Induction motor. Electrical power generator. DC motor. Electrical power transformer. Induction motor. Electrical power generator. DC motor. Electrical power transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A Shunt generator running at 1000 rpm has generated emf of 100 V. If the speed increases to 1200 rpm, the generated emf will be nearly 140 V 120 V 240 V 175 V 140 V 120 V 240 V 175 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power input to a 3 - φ induction motor is 60 kW and stator loss is 1 kW the rotor cu loss per phase is slip X 69 / 3. slip X 50 / 3. 1. slip X 59 / 3. slip X 69 / 3. slip X 50 / 3. 1. slip X 59 / 3. ANSWER DOWNLOAD EXAMIANS APP
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