Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor 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 Will overheat in spots Will not come upto speed ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor will always stop when Supply voltage frequency changes Load in motor varies Supply voltage fluctuates Excitation winding gets disconnected Supply voltage frequency changes Load in motor varies Supply voltage fluctuates Excitation winding gets disconnected ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor develops maximum power when load angle is 60° 120° 45° 90° 60° 120° 45° 90° ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Which of the following motors is non self starting? Synchronous motor Squirrel cage induction motor Wound rotor induction motor Dc series motor Synchronous motor Squirrel cage induction motor Wound rotor induction motor Dc series motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The rotor copper losses, in a synchronous motor, are met by c. source motor input supply lines armature input c. source motor input supply lines armature input ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on a synchronous motor is increased, its armature current is increased provided, it is ______ Over-excited All of these Under-excited Normally excited Over-excited All of these Under-excited Normally excited ANSWER DOWNLOAD EXAMIANS APP
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