Electrical Machines In DC generators, the residual magnetism is of the order of 2.5 %. 10 %. 15 %. 20 %. 2.5 %. 10 %. 15 %. 20 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC Shunt Motor having shunt field resistance of 250 Ω and armature resistance of 0.5 Ω is connected to 250 V supply and load current of 21 A. What is the back emf generated ? 230 V. 240 V. 210 V 150 V. 230 V. 240 V. 210 V 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3-phase, 50Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor output power? 2000W 1820W 1920W 1450W 2000W 1820W 1920W 1450W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC compound motor the field regulator is provided to control the field flux. control the armature flux. limit the armature current. demagnetize the field partially. control the field flux. control the armature flux. limit the armature current. demagnetize the field partially. ANSWER DOWNLOAD EXAMIANS APP
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. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines An unexcited single phase synchronous motor is universal motor. AC series motor. repulsion motor. reluctance motor. universal motor. AC series motor. repulsion motor. reluctance motor. ANSWER DOWNLOAD EXAMIANS APP
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