Electrical Machines Armature reaction in a DC machine is in the same direction as the main poles. makes an angle of 90° with the main pole axis. makes an angle with the main pole axis which is load dependent. is in direct opposition to the main poles. is in the same direction as the main poles. makes an angle of 90° with the main pole axis. makes an angle with the main pole axis which is load dependent. is in direct opposition to the main poles. 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. 10 volts. 40 volts. 20 volts. 30 volts. 10 volts. 40 volts. 20 volts. 30 volts. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In speed control of DC shunt motor by varying field flux, what may be the value of field regulator? 100 ohm 0.2 ohm 2 ohm. 10 ohm 100 ohm 0.2 ohm 2 ohm. 10 ohm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Motor dc series motor. dc shunt with armature resistance control. dc shunt motor with field weakening. dc compound motor. dc series motor. dc shunt with armature resistance control. dc shunt motor with field weakening. dc compound motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited dc motor has an armature resistance of 0.5 Ω. It runs off a 250 V dc supply Drawing an armature current of 20 A at 1500 rpm. The torque developed for an armature current Of 10 A, for the same field current, will be 15.6 Nm 15.92 Nm 15.28 Nm 16.55 Nm 15.6 Nm 15.92 Nm 15.28 Nm 16.55 Nm ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hopkinson test is conducted under which of the following condition? no load full load any of the above half load no load full load any of the above half load ANSWER DOWNLOAD EXAMIANS APP
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