Electrical Machines Two mechanically coupled alternators deliver power at 50 Hz and 60 Hz respectively. Highest speed of alternator is 3600 rpm. 3000 rpm. 600 rpm. 500 rpm. 3600 rpm. 3000 rpm. 600 rpm. 500 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC series motor drawing an armature current of Ia is operating under saturated magnetic conditions. The torque developed in the motor is proportional to Ia I/Ia2 1/Ia Ia2 Ia I/Ia2 1/Ia Ia2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a dc machine, 1. physically, the brush axis is along the direct axis 2. physically, the brush axis is along the interpolar axis 3. schematically, the brush axis is along the direct axis 4. schematically, the brush axis is along the quadrature axis 5. armaturemmf is directed along the brush axis From these, the correct statements are 1 , 3, 5 1, 4,5 2, 4, 5 2, 3, 5 1 , 3, 5 1, 4,5 2, 4, 5 2, 3, 5 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is low at light loads only both A and B low at rated load only low at heavy loads only low at light loads only both A and B low at rated load only low at heavy loads only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous machine, if the field flux axis is ahead of the armature field axis in the direction of rotation, the machine operating is synchronous generator. asynchronous generator. asynchronous motor. synchronous motor. synchronous generator. asynchronous generator. asynchronous motor. synchronous motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output indicate on the name plate of any motor is always the Gross power. Power drawn in KVA. Power drawn in KW. Output power at the shaft. Gross power. Power drawn in KVA. Power drawn in KW. Output power at the shaft. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS