Electrical Machines Reactive power generated or delivered significantly depends on frequency. load angle. excitation. both 1 and 2. frequency. load angle. excitation. both 1 and 2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In escalator which motor is used? 1 - φ IM. Universal motor. DC shunt motor. 3 - φ IM. 1 - φ IM. Universal motor. DC shunt motor. 3 - φ IM. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Find the number of poles required, when the frequency is 50Hz and speed of the motor is 500 rpm? 12 5 24 10 12 5 24 10 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The rotor speed of an induction motor is given by Ns = 120f /p × ( 1 - r). Nr = 120f / p × (1-s). None of these Ns = 120f / p × ( 1 - s ). Ns = 120f /p × ( 1 - r). Nr = 120f / p × (1-s). None of these Ns = 120f / p × ( 1 - s ). ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines When flux density is constant in a transformer, hysteresis loss varies as f V V² f² f V V² f² ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of induction motors the ratio of length to pole pitch for minimum cost, is taken as 1.5 to 2. 1.0. 3 to 5. 2 to 3. 1.5 to 2. 1.0. 3 to 5. 2 to 3. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS