Electrical Machines The 3 - Φ induction motor with rotor circuit open will not run. run normally. make noise. get over heated. not run. run normally. make noise. get over heated. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 200 V DC machine supplies 20 A at 200 V as a generator. The armature resistance is 0.2 Ω. If the machine is now operated as a motor at same terminal voltage and current but with the flux increased by 10%, the ratio of motor speed to generator speed is 1.06 0.96 0.87 0.95 1.06 0.96 0.87 0.95 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 1/√3 1/3 √3 3 1/√3 1/3 √3 3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 30°. 90°. 120°. 60°. 30°. 90°. 120°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a synchronous motor is running at synchronous speed, the damper winding produces damping torqe. eddy current torque. no torque. both 1 and 2. damping torqe. eddy current torque. no torque. both 1 and 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Example of double excited machine is None of these Both are correct. Synchronous motor. DC Shunt Motor None of these Both are correct. Synchronous motor. DC Shunt Motor ANSWER DOWNLOAD EXAMIANS APP
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