Electrical Machines In case of induction motors the ratio of length to pole pitch for minimum cost, is taken as 1.5 to 2. 1.0. 2 to 3. 3 to 5. 1.5 to 2. 1.0. 2 to 3. 3 to 5. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Saving of copper in auto transformer is increased as compared to two winding transformer, when transformation ratio K approaches to zero. two. unity. infinity. zero. two. unity. infinity. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Breather is provided in a transformer to provide cold air in transformer. absorb moisture of air during breathing. absorb moisture from air entering in transformer. filter the transformer oil. provide cold air in transformer. absorb moisture of air during breathing. absorb moisture from air entering in transformer. filter the transformer oil. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For small value armature current Ia the torque developed by a DC series motor is proportional to Ia. √Ia. Ia2. 1/Ia. Ia. √Ia. Ia2. 1/Ia. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a synchronous motor is running at synchronous speed, the damper winding produces damping torqe. both 1 and 2. eddy current torque. no torque. damping torqe. both 1 and 2. eddy current torque. no torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A lap wound DC machine has 400 conductors and 8 poles. The voltage induced per conductor is 2 volts. The machine generates a voltage of 200 V. 100 V. 400 V. 800 V. 200 V. 100 V. 400 V. 800 V. ANSWER DOWNLOAD EXAMIANS APP
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