Electrical Machines As compared to an induction motor, the air gap in a DC motor is between 50% and 90%. more. less than 50%. same. between 50% and 90%. more. less than 50%. same. 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 175 V 120 V 240 V 140 V 175 V 120 V 240 V 140 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Oil is provided in an oil filled transformer for cooling. both cooling and insulation. insulating. lubrication. cooling. both cooling and insulation. insulating. lubrication. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC machine having P no of pole pairs Z no of conductors having length L of resistivity ρ and cross section S are arranged. what is the armature resistance for lap-winding ? PZL/4S PZL/ 4Sa PZL/4SP² PZL/4Sa² PZL/4S PZL/ 4Sa PZL/4SP² PZL/4Sa² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An induction motor when started on no load does not accelerate up to full speed but runs at 1/7th of the rated speed. The motor is said to be locking. cogging. plugging. crawling. locking. cogging. plugging. crawling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the field circuit of a DC shunt motor is opened The armature current will reduce. DC Shunt Motor The motor will attain dangerously high speed. The speed of motor will be reduced. The armature current will reduce. DC Shunt Motor The motor will attain dangerously high speed. The speed of motor will be reduced. ANSWER DOWNLOAD EXAMIANS APP
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