Electrical Machines In a DC Shunt Motor if the load current increases keeping the terminal voltage constant, then flux will any of the above. remain constant. increase. decrease. any of the above. remain constant. increase. decrease. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the mechanical angle α between the stator and rotor poles increases, then the stator current None of above. Remains unchanged. Decreases. Increases. None of above. Remains unchanged. Decreases. Increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers with identical rating, are designed with flux densities of 1.2 and 1.4 Wb / m2 respectively. The weight of first transformer per kVA is none of these. less than that of second transformer. more than that of second transformer. equal to that of second transformer. none of these. less than that of second transformer. more than that of second transformer. equal to that of second transformer. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A shunt generator has a critical field resistance of 300 Ω at a speed of 800 rpm if the speed is raised to 1000 rpm the critical field resistance is 145 Ω. 150 Ω. 375 Ω. 225 Ω. 145 Ω. 150 Ω. 375 Ω. 225 Ω. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Fifth harmonic component of the induced voltage in three phase AC generator can be eliminated by using a winding pitch of 5 / 6. 2 / 3. 6 / 7. 4 / 5. 5 / 6. 2 / 3. 6 / 7. 4 / 5. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum allowable moisture content of power transformer insulating oil is generally taken as 20 ppm. 35 ppm. 45 ppm. 25 ppm. 20 ppm. 35 ppm. 45 ppm. 25 ppm. ANSWER DOWNLOAD EXAMIANS APP
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