Electrical Machines Motors for fans and pumps are selected in the rpm range 1440 to 2880. 500 to 720. 375 to 500. 720 to 920. 1440 to 2880. 500 to 720. 375 to 500. 720 to 920. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In salient pole synchronous machine, maximum power occurs at a load angle of Greater than 90° less than 90° 0° 90° Greater than 90° less than 90° 0° 90° ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is low at heavy loads only both A and B low at light loads only low at rated load only low at heavy loads only both A and B low at light loads only low at rated load only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The heat transfer by convection in a transformer least depends on air velocity. color of the paint. temperature difference. surface area. air velocity. color of the paint. temperature difference. surface area. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? a finite negative value ∞ a positive finite value 0 a finite negative value ∞ a positive finite value 0 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC generator if field winding attains the critical resistance machine will generate maximum power. the voltage generated will be zero. machine will generate maximum voltage. field winding will burn. machine will generate maximum power. the voltage generated will be zero. machine will generate maximum voltage. field winding will burn. ANSWER DOWNLOAD EXAMIANS APP
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