Electrical Machines The slip of an induction motor during DC rheostatic braking is 1 - s. s. 2 + s. 2 - s. 1 - s. s. 2 + s. 2 - s. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 250 V DC generator in run at rated speed with no excitation. The open circuit voltage will be 250 V. very small, say about 2 or 3 V. zero. about 100 V. 250 V. very small, say about 2 or 3 V. zero. about 100 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator the emf generated by the armature is maximum when induced voltage is high. shaft rotation is high. rate of change of flux is minimum. rate of change of flux is maximum. induced voltage is high. shaft rotation is high. rate of change of flux is minimum. rate of change of flux is maximum. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following rotor requires damper winding? Salient pole rotor. Cylindrical rotor. None of these Both type rotor. Salient pole rotor. Cylindrical rotor. None of these Both type rotor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 100 ohm 10 ohm 0.2 ohm 2 ohm. 100 ohm 10 ohm 0.2 ohm 2 ohm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 100 KVA transformer is operating at 60 Hz, 240 V supply. The same transformer is operating at 50 Hz, 200 V supply. The new rating is 123.3 KVA 50 KVA 83.33 KVA 100 KVA 123.3 KVA 50 KVA 83.33 KVA 100 KVA ANSWER DOWNLOAD EXAMIANS APP
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