Electrical Machines In dc machines, the space distribution of air-gap flux density wave at no load is flat-topped co- sinusoidal sinusoidal rectangular flat-topped co- sinusoidal sinusoidal rectangular ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A load of 900 lbs is to be raised with a lift car weighting 855 lbs at a speed of 110 feet per minute, the over balance being 40 % and percentage efficiency 45 %. Find the horse power of the motor without counterweight 160. 150. 180. 170. 160. 150. 180. 170. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is the function of inter pole in DC generator? To serve the economical aspects. To get a superior commutation. Both option B and C. To neutralize the distortion of main field flux due to armature reaction. To serve the economical aspects. To get a superior commutation. Both option B and C. To neutralize the distortion of main field flux due to armature reaction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a 1-phase induction motor, if the forward torque slip is S, what is the backward torque slip? S 2-S 1/S 1-S S 2-S 1/S 1-S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The full load copper loss and iron loss of transformer are 6400W and 5000W respectively. The copper loss and iron loss at half load will be respectively? 1600 W and 5000 W 1600 W and 1250 W 3200 W and 2500 W 3200 W and 5200 W 1600 W and 5000 W 1600 W and 1250 W 3200 W and 2500 W 3200 W and 5200 W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The demagnetising component of armature reaction in a DC generator increases armature speed. reduces inter poles flux density. results in sparking trouble. reduces generator emf. increases armature speed. reduces inter poles flux density. results in sparking trouble. reduces generator emf. ANSWER DOWNLOAD EXAMIANS APP