Electrical Machines Which of the following will vary the maximum torque? both 1 and 2 None of these rotor resistance R rotor reactance X both 1 and 2 None of these rotor resistance R rotor reactance X ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Mechanical energy is supplied to DC generator at the rate of 4200 J / s. The generator delivers 32.2 Amp at 120 V. What is the percentage efficiency of the generator? 210 V. 205 V. 212 V. 201.02 V. 210 V. 205 V. 212 V. 201.02 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V DC machine has an armature resistance 1 Ω. If the full load current is 20 A, the difference of induced voltage between generator and motor is 40 V. 60 V. 0 V. 20 V. 40 V. 60 V. 0 V. 20 V. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque speed characteristics of a AC servomotor is approximately parabola any of the above hyperbola linearised parabola any of the above hyperbola linearised ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is not suitable for frequent starting and stopping? Capacitor split phase motor All of these Capacitor run motor Resistance split phase motor Capacitor split phase motor All of these Capacitor run motor Resistance split phase motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In travelling cranes for swing action which motor is preferred? Capacitor type induction motors. AC slip ring IM. DC series motor. Reluctance motor. Capacitor type induction motors. AC slip ring IM. DC series motor. Reluctance motor. ANSWER DOWNLOAD EXAMIANS APP