Synchronous Motors By which of the following methods the constant speed of a synchronous motor can be changed to new fixed value ? By changing the load By interchanging any two phases By changing the applied voltage By changing the supply frequency By changing the load By interchanging any two phases By changing the applied voltage By changing the supply frequency ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The shaft of synchronous motor is made of Alcino Chrome steel Mild steel Stainless steel Alcino Chrome steel Mild steel Stainless steel ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Hunting in a synchronous motor cannot be due to variable supply voltage variable frequency windage friction variable load variable supply voltage variable frequency windage friction variable load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.8 lagging Unity 0.5 leading 0.8 leading 0.8 lagging Unity 0.5 leading 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor 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 Will overheat in spots ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In case one phase of a three-phase synchronous motor is short-circuited the motor will take less than the rated load run with excessive vibrations not start run at 2/3 of synchronous speed take less than the rated load run with excessive vibrations not start run at 2/3 of synchronous speed ANSWER DOWNLOAD EXAMIANS APP
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