Synchronous Motors A synchronous motor can operate at Unity power factor only Lagging, leading and unity power factors Lagging power factor only Leading power factor Unity power factor only Lagging, leading and unity power factors Lagging power factor only Leading power factor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the field of a synchronous motor is under-excited, the power factor will be unity leading lagging zero unity leading lagging zero ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Dust and dirt accumulation on motor winding will result in Shorting of coils Rise in winding temperature Increased core losses Eddy current flow Shorting of coils Rise in winding temperature Increased core losses Eddy current flow ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Synchronous motor always run at More than synchronous speed None of the listed here The synchronous speed Less than synchronous speed More than synchronous speed None of the listed here The synchronous speed Less than synchronous speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor cannot be due to variable frequency windage friction variable load variable supply voltage variable frequency windage friction variable load variable supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its speed may be controlled more easily its power factor may be varied at will None of these its speed is independent of supply frequency its speed may be controlled more easily its power factor may be varied at will None of these its speed is independent of supply frequency ANSWER DOWNLOAD EXAMIANS APP
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