Electrical Machines Field weakening control method is used for the _________ ? both A and B None of these below rated speed above rated speed both A and B None of these below rated speed above rated speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 4 pole DC generator rotates at 1500 rpm. How many times in a second, will the emf induced in each armature conductor changes its direction? 750. 200. 100. 500. 750. 200. 100. 500. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In the V curve shown in figure below for a synchronous motor, the parameter of Y and X coordinates are, respectively Armature current and field current. Torque and field current. Power factor and field current. Armature current and torque. Armature current and field current. Torque and field current. Power factor and field current. Armature current and torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machines internal characteristics are plotted between Eg vs load current Vt vs Ia Vt vs load current Eg vs Ia Eg vs load current Vt vs Ia Vt vs load current Eg vs Ia ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The brushes of a DC machine should be placed on the commutator in the inter polar axis. armature midway between poles. armature in the polar axis. commutator in the polar axis. commutator in the inter polar axis. armature midway between poles. armature in the polar axis. commutator in the polar axis. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss is proportional to f2. f3. f. f1.5. f2. f3. f. f1.5. ANSWER DOWNLOAD EXAMIANS APP
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