Electrical Machines What is the emf generated by a 4 pole Lap connected DC Motor rotating at 1500 rpm having 1000 conductors and useful flux per pole is 0.4 mWb. 30 volts. 40 volts. 10 volts. 20 volts. 30 volts. 40 volts. 10 volts. 20 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Variation in speed by ward-Leonard control of DC motors occurs due to variation in Armature current. Supply voltage. Armature voltage. Field excitaion. Armature current. Supply voltage. Armature voltage. Field excitaion. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In star-delta starting of squirrel cage induction motor compared to DOL starting the starting current and torque are 1/√3, 1/3 1/3, 1/3 1/3, 1/√3 1/√3, 1/√3 1/√3, 1/3 1/3, 1/3 1/3, 1/√3 1/√3, 1/√3 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 10 kW, 230 V, dc shunt machine has four terminals brought out through four leads. For this machine both the windings have thick leads both the windings have thin leads armature winding has thin leads whereas field winding has thick leads armature winding has thick leads whereas field winding has thin leads both the windings have thick leads both the windings have thin leads armature winding has thin leads whereas field winding has thick leads armature winding has thick leads whereas field winding has thin leads ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a DC Shunt motor if the load is decreased to some extent, what will happen to its speed? The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will increase abruptly. The speed will remains almost constant. The speed will increase in proportion to reduction in load. The speed will increase gradually. The speed will increase abruptly. The speed will remains almost constant. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Swinburne test is conducted under which of the following condition? full load no load half load any of the above full load no load half load any of the above ANSWER DOWNLOAD EXAMIANS APP
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