Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor Will overheat in spots Will not come upto speed Will fail to pull into step Will refused ro start Will overheat in spots Will not come upto speed Will fail to pull into step Will refused ro start ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor can not be due to Windage friction Variable supply frequency Variable frequency Variable load Windage friction Variable supply frequency Variable frequency Variable load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Small synchronous motors are started by _______ None of the listed here Damper winding Pony motor Variable frequency source None of the listed here Damper winding Pony motor Variable frequency source ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When the synchronous motor is pulled out of synchronism, the stator current _______ Becomes zero Is decreased too much Remains unchanged Is increased too much Becomes zero Is decreased too much Remains unchanged Is increased too much ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In a synchronous motor, the rotor copper loss are met by ______ Supply lines Armature input Motor input Dc source Supply lines Armature input Motor input Dc source ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Which of the following motors is non self starting? Squirrel cage induction motor Wound rotor induction motor Synchronous motor Dc series motor Squirrel cage induction motor Wound rotor induction motor Synchronous motor Dc series motor ANSWER DOWNLOAD EXAMIANS APP
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