Electrical Machines The starting resistance of DC motor is generally Infinitely large. around 500 ohms. Low. 1000 ohms. Infinitely large. around 500 ohms. Low. 1000 ohms. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the shunt resistance component equivalent circuit obtained by no load test of an induction motor representative of ? windage and friction loss both 1 and 2 core loss only Copper loss windage and friction loss both 1 and 2 core loss only Copper loss ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of an induction motor operating at no load will have a value around 0.9 lag unity 0.2 lag 0.2 lead 0.9 lag unity 0.2 lag 0.2 lead ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the armature current of 5 Amp is flowing through the dc motor the torque produced is 47 Nm. Keeping the speed constant if the armature current is increased to 7 amp, calculate the new torque. Assume losses to be constant. 38.5 Nm. 27.73 Nm . 74 Nm. 65.8 Nm. 38.5 Nm. 27.73 Nm . 74 Nm. 65.8 Nm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC generators has rising V-I characteristics? Compound. Shunt. None of them. Series. Compound. Shunt. None of them. Series. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 1-phase induction motor, if the forward torque slip is S, what is the backward torque slip? 1-S 2-S 1/S S 1-S 2-S 1/S S ANSWER DOWNLOAD EXAMIANS APP
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