Electrical Machines Find the developed torque DC Series Motor having armature resistance of 0.2 Ω and taking armature current of 60 A is connected to 250 V supply. Considered brush drop of 1 V each. 234.76 N-m. 266.20 N-m. cant be determined. 133.22 N-m 234.76 N-m. 266.20 N-m. cant be determined. 133.22 N-m ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The field system of an alternator is usually excited 230 V AC. 110 / 220 V AC. 3 - Φ, 50 Hz and 400 V. 250 / 250 V DC. 230 V AC. 110 / 220 V AC. 3 - Φ, 50 Hz and 400 V. 250 / 250 V DC. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt generator has full-load voltage regulation of 10% at rated speed of 1000 rpm. If it is now driven at 1250 rpm, then its voltage regulation at full load would be 12.5% be more than 10% be less than 10% remain unchanged be 12.5% be more than 10% be less than 10% remain unchanged ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The power factor of squirrel cage induction motor is low at light loads only low at heavy loads only both A and B low at rated load only low at light loads only low at heavy loads only both A and B low at rated load only ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Hysteresis loss is proportional to f. f1.5. f3. f2. f. f1.5. f3. f2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Satisfactory commutation of DC machine requires brushes should be of proper grade and size. brushes should smoothly run in the holders. smooth, concentric commutator properly undercut. All of these brushes should be of proper grade and size. brushes should smoothly run in the holders. smooth, concentric commutator properly undercut. All of these ANSWER DOWNLOAD EXAMIANS APP
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