Electrical Machines Demagnetization effects which of the following? reduction in main field flux both B and C commutation reduces the terminal voltage reduction in main field flux both B and C commutation reduces the terminal voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The voltage regulation of a DC generator at full load being zero implies that the generator is cumulatively compounded. series connected. shunt connected. deferentially compounded. cumulatively compounded. series connected. shunt connected. deferentially compounded. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For very sensitive and wide speed control, the preferable control method is Multiple voltage control. Armature control. Field control. Ward-Leonard control. Multiple voltage control. Armature control. Field control. Ward-Leonard control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Open circuit test on transformer gives copper loss eddy current loss hysteresis loss both 1and 2 copper loss eddy current loss hysteresis loss both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For pure resistive load what is the armature reaction? cross magnetization demagnetization magnetization All of these cross magnetization demagnetization magnetization All of these 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. Heavy sparking at brushes. Both of above. Heavy sparking at the first stud of starting resistance steps. None of these. Heavy sparking at brushes. Both of above. ANSWER DOWNLOAD EXAMIANS APP
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