Electrical Machines The rotor power output of 3-phase induction motor is 15 KW. The rotor copper losses at a slip of 4% will be 600 W 650 W 700 W 625 W 600 W 650 W 700 W 625 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The magnetic circuit of a dc shunt generator with negligible armature resistance and brush contact voltage drop remains unsaturated when it delivers full-load current at rated terminal voltage. The brushes are kept in the interpolar axis and speed is maintained constant. When the load is switched off, the terminal voltage would remain the same increase decrease become zero remain the same increase decrease become zero ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In synchronous generator V curve is drawn between field current on Y-axis and armature current on X-axis. either of these. field current on X-axis and power factor on Y-axis. field current on X-axis and armature current on Y-axis. field current on Y-axis and armature current on X-axis. either of these. field current on X-axis and power factor on Y-axis. field current on X-axis and armature current on Y-axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Semi closed slots or totally closed slots are used in induction motors, essentially to improve starting torque reduce magnetising current and improve power factor decrease starting torque increase pull out torque improve starting torque reduce magnetising current and improve power factor decrease starting torque increase pull out torque ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A shunt generator has a critical field resistance of 300 Ω at a speed of 800 rpm if the speed is raised to 1000 rpm the critical field resistance is 150 Ω. 225 Ω. 375 Ω. 145 Ω. 150 Ω. 225 Ω. 375 Ω. 145 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Methods of synchronizing of alternator may be done by all of these. one dark two bright. all dark lamp method. all bright lamp method. all of these. one dark two bright. all dark lamp method. all bright lamp method. ANSWER DOWNLOAD EXAMIANS APP
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