Electrical Machines Which one of the following statement is correct ? In an induction motor if the air gap is increased then its speed will increase its speed will reduce its power factor will reduce its efficiency will improve its speed will increase its speed will reduce its power factor will reduce its efficiency will improve ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Swinburne's test is applicable to DC series motor. DC compound motor. DC Shunt motor. DC shunt and level Compound motor. DC series motor. DC compound motor. DC Shunt motor. DC shunt and level Compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If an additional resistance is connected in series with a DC series motor operating at rated speed, the speed of the motor will Remain unaltered. Oscillate around the normal speed. Reduce. Increase. Remain unaltered. Oscillate around the normal speed. Reduce. Increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Poles of DC machine are often laminated to reduce iron weight. dissipate more heat. reduce armature reaction. reduce pulsation loss. reduce iron weight. dissipate more heat. reduce armature reaction. reduce pulsation loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be somewhat less than 230 V 6 V 230 V somewhat more than 230 V somewhat less than 230 V 6 V 230 V somewhat more than 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When the rotor speed, in a synchronous machine, becomes more than the synchronous speed during hunting, the damper bars develop induction motor torque. DC motor torque. induction generator torque. synchronous motor torque. induction motor torque. DC motor torque. induction generator torque. synchronous motor torque. ANSWER DOWNLOAD EXAMIANS APP
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