Electrical Machines Demagnetization effects which of the following? commutation reduction in main field flux both B and C reduces the terminal voltage commutation reduction in main field flux both B and C reduces the terminal voltage ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature coil is short circuited by brushes when it lies along neutral axis. in none of above positions. along field axis. in any of above positions. along neutral axis. in none of above positions. along field axis. in any of above positions. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The total core loss of a 400 V, 50 Hz transformer is 2400W, when it is supplied by 200 V, 25 Hz loss is 800W. Calculate eddy current loss and hysteresis loss? 1400W, 1000W 1600W, 800W 800W, 1600W 1000W , 1400W 1400W, 1000W 1600W, 800W 800W, 1600W 1000W , 1400W ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Larger values of air flux density is taken while designing IM for both. none. larger bore diameter. larger output. both. none. larger bore diameter. larger output. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The fall in speed of the DC generator due to increase in load can be corrected by increasing the excitation. reducing the load voltage. increasing the input to the prime mover. cooling the armature. increasing the excitation. reducing the load voltage. increasing the input to the prime mover. cooling the armature. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a transformer both Oc and SC tests are conducted on HV side OC test is conducted on HV side and SC test is conducted on LV side OC test is conducted on LV side and SC test is conducted on HV side both OC and SC tests are conducted on LV side both Oc and SC tests are conducted on HV side OC test is conducted on HV side and SC test is conducted on LV side OC test is conducted on LV side and SC test is conducted on HV side both OC and SC tests are conducted on LV side ANSWER DOWNLOAD EXAMIANS APP
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