Electrical Machines Which of the following will vary the maximum torque? rotor reactance X rotor resistance R None of these both 1 and 2 rotor reactance X rotor resistance R None of these both 1 and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Two transformers operating in parallel will share the load depending on their per unit impedance efficiency ratings leakage reactance per unit impedance efficiency ratings leakage reactance ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A dc shunt motor runs at a no-load speed of 1140 rpm. At full load, armature reaction weakens the main flux by 5% whereas the armature circuit voltage drops by 10%. The motor full-load speed in rpm is 1203 1000 1080 1200 1203 1000 1080 1200 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The use of double squirrel cage winding on the rotor provides low noise. a large starting torque. reduced starting torque. higher efficiency. low noise. a large starting torque. reduced starting torque. higher efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following motor is suitable for frequent starting and stoppings? Capacitor start capacitor run motor Resistance split phase motor Capacitor start motor All of these Capacitor start capacitor run motor Resistance split phase motor Capacitor start motor All of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a DC Shunt Motor having armature resistance of 0.5 Ω and 2A armature current at no-load, when the armature current is changed to 20A at loaded condition the speed is 1000 r.p.m. What is the speed at no-load? 963.8 r.p.m. 1037.5 r.p.m. 4575.4 r.p.m. 1130 r.p.m. 963.8 r.p.m. 1037.5 r.p.m. 4575.4 r.p.m. 1130 r.p.m. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS