Electrical Machines We can apply source transformation to voltage source when a resistance is connected to it in 14 HP. 10 HP. 15 HP. 13 HP. 14 HP. 10 HP. 15 HP. 13 HP. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC motors are stopped by opening line switches and not by forcing the handle of the motor starter back to OFF position. This is due to occurance of Heavy sparking at the first stud of starting resistance steps. None of these. Both of above. Heavy sparking at brushes. Heavy sparking at the first stud of starting resistance steps. None of these. Both of above. Heavy sparking at brushes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines 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 motor is 3.76%. 2.56 %. 2.57 %. 4.76%. 3.76%. 2.56 %. 2.57 %. 4.76%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Why are capacitors used with large AC induction motor? Improve power level. Improve current level. Improve voltage level. Improve power factor. Improve power level. Improve current level. Improve voltage level. Improve power factor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1000 1200 1203 1080 1000 1200 1203 1080 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines shape of net flux density is? flat tapped or trapezoidal saddle shape peaky in nature sine wave flat tapped or trapezoidal saddle shape peaky in nature sine wave ANSWER DOWNLOAD EXAMIANS APP
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