Synchronous Motors A synchronous motor runs at speed ranging from ______ None of the listed here 1800 to 3600 rpm 3600 to 6000 rpm 150 to 1800 rpm None of the listed here 1800 to 3600 rpm 3600 to 6000 rpm 150 to 1800 rpm ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The standard full-load power factor ratings for synchronous motors are unity or 0.8 lagging unity or zero unity or 0.8 leading zero or 0.8 leading unity or 0.8 lagging unity or zero unity or 0.8 leading zero or 0.8 leading ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The speed regulation of a synchronous motor is always 1% Zero Positive 0.5% 1% Zero Positive 0.5% ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors If one phase of a 3 phase synchronous motor is short circuited, motor 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 Will fail to pull into step ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors A synchronous motor delivers reactive power when ______ None of the listed here Under excited Normally excited Over excited None of the listed here Under excited Normally excited Over excited ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When load on an over-excited or under excited synchronous motor is increased, rate of change of its armature current as compared with that of power factor is more twice less equal more twice less equal ANSWER DOWNLOAD EXAMIANS APP
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