Electrical Machines Commutator pitches of duplex and simplex lap windings are respectively 4 ang 1 2 and 1 2 and 2 4 and 2 4 ang 1 2 and 1 2 and 2 4 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In 3 - Φ induction motor some times copper bars are placed deep in the rotor to reduce copper loss. improve power factor. improve efficiency. improve starting torque. reduce copper loss. improve power factor. improve efficiency. improve starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a three phase star - delta transformer, what is the angle difference between primary and secondary phase voltages? Star side leads by 30°. Star side lags by -30°. Delta side leads by 30°. Delta side lags by -30°. Star side leads by 30°. Star side lags by -30°. Delta side leads by 30°. Delta side lags by -30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Silicon content in steel lamination is kept within 5% as it increases hysteresis loss. Increases cost. makes the material brittle. All of these increases hysteresis loss. Increases cost. makes the material brittle. All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a shunt generator delivers 100 A at 200 V, and the resistances of the shunt field and armature are 100 ohms and 0.01 ohms respectively, the generator emf will be any one of the connection. no resistance is connected. series. parallel. any one of the connection. no resistance is connected. series. parallel. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, maximum power occurs at a load angle of Greater than 90° less than 90° 0° 90° Greater than 90° less than 90° 0° 90° ANSWER DOWNLOAD EXAMIANS APP
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