Electrical Machines For larger units high torque it is preferred to use Universal motor. DC shunt motor. Partial motor. Slip induction motor. Universal motor. DC shunt motor. Partial motor. Slip induction motor. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two identical loss less series motors connected in series across a dc supply voltage, runs at speed of N1 and N2, then ratio of their output power is none. N12 : N22. 1 : 1. N1 : N2. none. N12 : N22. 1 : 1. N1 : N2. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines With the increase in speed of a DC motor both back emf as well as line current fall. back emf increases but line current falls. back emf falls and line current increases. both back emf as well as line current increase. both back emf as well as line current fall. back emf increases but line current falls. back emf falls and line current increases. both back emf as well as line current increase. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines It is an advisable to use auto transformer if the transformation ratio is near to 1. Greater than 1. 0.5. 0.25. near to 1. Greater than 1. 0.5. 0.25. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The frequency of voltage generated by an alternator having 8 poles and rotating at 250 rpm is 60 Hz. 16.67 Hz. 50 Hz. 25 Hz. 60 Hz. 16.67 Hz. 50 Hz. 25 Hz. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has resistance and reactance in per unit as 0.01 and 0.04 respectively. Its voltage regulation for 0.8 power factor lagging and leading will be None of these 3.2% and -1.6% 6% and -4% 4.8% and -3.2% None of these 3.2% and -1.6% 6% and -4% 4.8% and -3.2% ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS