Electrical Machines The flux involved in the emf equation of a transformer has average value. maximum value. rms value. total value. average value. maximum value. rms value. total value. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If starting current of a 3 - Φ induction motor is 5 times the rated current, while rated slip is 4 %, then ratio of starting torque to full load torque is 0.8. 0.4. 0.6. 1. 0.8. 0.4. 0.6. 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 - Φ, 6 pole, 50 Hz IM has a rotor speed of 987 rpm find rotor frequency? 0.70 Hz. 0.65 Hz. 0.75 Hz. 60 Hz. 0.70 Hz. 0.65 Hz. 0.75 Hz. 60 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If Kh is hysteresis constant, f is supply frequency, Bm maximum flux density in core of transformer, the expression of hysteresis loss in transformer, is given by Khf2Bm1.6. KhfBm1.6. KhfBm3. KhfBm. Khf2Bm1.6. KhfBm1.6. KhfBm3. KhfBm. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is advisable to start a DC series motor with some load to Avoid sparking. Limit the speed. Limit the current. Limit the flux. Avoid sparking. Limit the speed. Limit the current. Limit the flux. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a transformer to be tested at full load conditions but consuming only losses from the main, we do None of these load test OC and SC tests back to back test None of these load test OC and SC tests back to back test ANSWER DOWNLOAD EXAMIANS APP
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