Electrical Machines A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm. Find the rotor efficiency? 95% 92% 94% 96% 95% 92% 94% 96% 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. 4 / 5. 6 / 7. 5 / 6. 2 / 3. 4 / 5. 6 / 7. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At stand still condition the value of slip is infinite value finite value 0 1 infinite value finite value 0 1 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. 540 rpm. 470 rpm. 450 rpm. 240 rpm. 540 rpm. 470 rpm. 450 rpm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Larger values of air flux density is taken while designing IM for larger bore diameter. larger output. none. both. larger bore diameter. larger output. none. both. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two generators G1 and G2 are to be operated in parallel to deliver a total current of 60 A. Generator one has a terminal voltage of 280 V on no load and 240 V when supplying 40 A current. Similarly the second generator has a voltage of 300 V when on no load and 240 V when supplying of 50 A of current. The output voltage of each generator will be 240 V. 238.2 V. 271.7 V. 256.4 V. 240 V. 238.2 V. 271.7 V. 256.4 V. ANSWER DOWNLOAD EXAMIANS APP
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