Synchronous Motors Most of the synchronous motors are _______ power factor metors. 0.8 lagging Unity 0.8 leading 0.5 leading 0.8 lagging Unity 0.8 leading 0.5 leading 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
Synchronous Motors The back e.m.f. of a synchronous motor depends on load angle speed All of these load load angle speed All of these load ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum constant load torque under which a synchronous motor will pull into synchronism at rated rotor supply voltage and frequency is known as pull-up torque pull-in torque pull-out torque None of these pull-up torque pull-in torque pull-out torque None of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors An important advantage of a synchronous motor over wound round induction motor is that its power factor may be varied at will its speed may be controlled more easily its speed is independent of supply frequency None of these its power factor may be varied at will its speed may be controlled more easily its speed is independent of supply frequency None of these ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous machine with low value short circuit ratio has Good speed regulation Lower stability limit High stability limit Good voltage regulation Good speed regulation Lower stability limit High stability limit Good voltage regulation ANSWER DOWNLOAD EXAMIANS APP
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