Electrical Machines In a 12 pole triplex lap wound DC armature, each conductor can carry current of 100 A. The rated current of this armature is 3600 A. 1200 A. 600 A. 2400 A. 3600 A. 1200 A. 600 A. 2400 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the applied voltage of a certain transformer is increased by 50% and the frequency is reduced by 50%, the maximum flux density will (assuming that the magnetic circuit remains unsaturated) changes to 0.5 times the original value changes to three times the original value changes to 1.5 times the original value remain the same as the original changes to 0.5 times the original value changes to three times the original value changes to 1.5 times the original value remain the same as the original ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power will be developed when back emf is equal to supply voltage. All of these half of the supply voltage. double the supply voltage. equal to supply voltage. All of these half of the supply voltage. double the supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dissolve gas analysis of transformer oil is carried out to determine condition of transformer. condition of bushings. condition of transformer oil. condition of bushing stud. condition of transformer. condition of bushings. condition of transformer oil. condition of bushing stud. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 12 pole, 600 V, 50 Hz star connected IM has rotor resistance and stand still resistance of 0.03 Ω and 0.5 Ω respectively. The speed of maximum torque will be 240 rpm. 450 rpm. 470 rpm. 540 rpm. 240 rpm. 450 rpm. 470 rpm. 540 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The output power of any electrical motor is taken from the Armature. Motor frame. Coupling mounted on the shaft. Field. Armature. Motor frame. Coupling mounted on the shaft. Field. ANSWER DOWNLOAD EXAMIANS APP
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