Electrical Machines The emf induced in a conductor rotating in a bipolar field is AC. DC. None of these both of above. AC. DC. None of these both of above. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In V/f speed control of 3-phase induction motor, with increase in frequency, the slip at which maximum torque occurs decrease. increase. None of these either of these. decrease. increase. None of these either of these. 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. 65.8 Nm. 74 Nm. 27.73 Nm . 38.5 Nm. 65.8 Nm. 74 Nm. 27.73 Nm . 38.5 Nm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For the speed control of polyphase squirrel cage induction motor, if frequency of operation is decreased with constant V, Tst increases None of these constant supply voltage V, starting torque Tst decreases either of these constant V, Tst increases None of these constant supply voltage V, starting torque Tst decreases either of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the highest possible speed of turbo alternators? 4000 rpm 3000 rpm 1000 rpm 1500 rpm 4000 rpm 3000 rpm 1000 rpm 1500 rpm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Compensating winding is placed in the armature core All of these pole shoe main field armature core All of these pole shoe main field ANSWER DOWNLOAD EXAMIANS APP
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