Electrical Machines No load test of 3-phase induction motor gives which of the following? constant loss variable loss None of these both A and B constant loss variable loss None of these both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator beyond critical resistance will generate maximum current. maximum voltage. maximum power. no voltage. maximum current. maximum voltage. maximum power. no voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Due to magnetic saturation, the flux per pole in a DC machine without brush shift increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in generators and increases in motor with load. decreases in both generators and the motors with load. increases in generators but decreases in motor with load. increases in both the generators and the motors with load. decreases in generators and increases in motor with load. decreases in both generators and the motors with load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator has full-load voltage regulation of 10% at rated speed of 1000 rpm. If it is now driven at 1250 rpm, then its voltage regulation at full load would be 12.5% be less than 10% remain unchanged be more than 10% be 12.5% be less than 10% remain unchanged be more than 10% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two single-phase alternators operating in parallel have induced EMFs on open circuit of 230∠0° and 230∠10° volts and respective reactance of j2 Ω j3 Ω calculate the terminal voltage 200 V. 300 V. 223.V. 150 V. 200 V. 300 V. 223.V. 150 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? Low. Equal to 1. Same as full load. High. Low. Equal to 1. Same as full load. High. ANSWER DOWNLOAD EXAMIANS APP
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