Electrical Machines For a specific open-circuit voltage of a DC generator, the short-circuit electric current will be maximum when it is differentially compounded. cumulatively compounded. shunt connected. separately excited. differentially compounded. cumulatively compounded. shunt connected. separately excited. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the number of rotor slots is equal to number of stator slots, then motor refuses to start. Hence it is known as crawling. air gap. relative speed. cogging. crawling. air gap. relative speed. cogging. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The constant losses in transformer is/are both 2 and 3. hysteresis loss. copper loss. eddy current loss. both 2 and 3. hysteresis loss. copper loss. eddy current loss. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For pure resistive load what is the armature reaction? magnetization All of these demagnetization cross magnetization magnetization All of these demagnetization cross magnetization ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor of a 3 - Φ wound induction motor is provided with heavy copper or aluminium bars placed in rotor slots. three phase winding. heavy short-circuited end rings. single phase winding. heavy copper or aluminium bars placed in rotor slots. three phase winding. heavy short-circuited end rings. single phase winding. 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 more than 6 V 6 V less than 6 V zero more than 6 V 6 V less than 6 V ANSWER DOWNLOAD EXAMIANS APP
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