Electrical Machines Brushes are always placed on--------------- , in order to achieve sparkles commutation? GNA either GNA or MNA None of these MNA GNA either GNA or MNA None of these MNA ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For 250 volt DC Shunt Motor the armature and field resistance are 0.5 ohm and 250 ohm respectively. What will be the back e.m.f. produced when it takes a load current of 21A. 220 V. 150 V. 280 V. 240 V. 220 V. 150 V. 280 V. 240 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of DC Shunt Motor electromagnetic torque developed is None of above. Proportional to the armature current. Proportional to the square of armature current. Inversely proportional to the armature current. None of above. Proportional to the armature current. Proportional to the square of armature current. Inversely proportional to the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The flux involved in the emf equation of a transformer has average value. total value. maximum value. rms value. average value. total value. maximum value. rms value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When a synchronous motor is running at synchronous speed, the damper winding produces both 1 and 2. no torque. damping torqe. eddy current torque. both 1 and 2. no torque. damping torqe. eddy current torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following DC Motor uses 4-point starter? DC shunt motor with armature resistance. DC compound motor. DC series motor. DC shunt motor with field weaking control. DC shunt motor with armature resistance. DC compound motor. DC series motor. DC shunt motor with field weaking control. ANSWER DOWNLOAD EXAMIANS APP
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