DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? Stability Wide speed range High starting torque Low cost Stability Wide speed range High starting torque Low cost ANSWER DOWNLOAD EXAMIANS APP
DC Motors Ward-Leonard control is basically a Field divertor method Field control method Armature resistance control method Voltage control method Field divertor method Field control method Armature resistance control method Voltage control method ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a motor falls from 1100 r.p.m. at no-load to 1050 r.p.m. at rated load. The speed regulation of the motor is 4.76% 6.77% 2.22% 8.85% 4.76% 6.77% 2.22% 8.85% ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following loss in a D.C. generator varies significantly with the load current? Armature copper loss Field copper loss Windage loss None of these Armature copper loss Field copper loss Windage loss None of these ANSWER DOWNLOAD EXAMIANS APP
DC Motors Armature reaction in dc motor is increased When the armature current increases When the armature current decreases When the field current increases By interpoles When the armature current increases When the armature current decreases When the field current increases By interpoles ANSWER DOWNLOAD EXAMIANS APP
DC Motors The power mentioned on the name plate of an electric motor indicates The power drawn in kW The power drawn in kVA The gross power The output power available at the shaft The power drawn in kW The power drawn in kVA The gross power The output power available at the shaft ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS