Electrical Machines A 4 pole lap wound dc generator has 4 brushes, if one of the brush is damaged, what will be the change in V, I and P ratings V/2, I/2 and P/4 V/2, I and P/2 V, I and P V, I/2 and P/2 V/2, I/2 and P/4 V/2, I and P/2 V, I and P V, I/2 and P/2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power of any electrical motor is taken from the Motor frame. Field. Armature. Coupling mounted on the shaft. Motor frame. Field. Armature. Coupling mounted on the shaft. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A separately-excited DC generator, running at rated speed, has 6 volts across its armature terminals with no field current. When field winding is excited with one ampere, the voltage builds up to 250 V at no load. In case field current is reduced to zero, with the speed remaining unaltered, the armature terminal voltage would be zero less than 6 V more than 6 V 6 V zero less than 6 V more than 6 V 6 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators operating in parallel with rating 50MW and 100MW respectively. Both their respective governor settings are identical as 4%, consider same no load frequency. How will the machine share a common load of 100 MW any of the above 33.33 MW and 66.67 MW respectively 50 MW and 50 MW respectively 66.67 MW and 33.33 MW respectively any of the above 33.33 MW and 66.67 MW respectively 50 MW and 50 MW respectively 66.67 MW and 33.33 MW respectively ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Doubled. Remains same. Eight times. Four times. Doubled. Remains same. Eight times. Four times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Total core loss is also called as -------------? Hysteresis loss Magnetic loss Copper loss Eddy current loss Hysteresis loss Magnetic loss Copper loss Eddy current loss ANSWER DOWNLOAD EXAMIANS APP
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