Electrical Machines Ward-Leonard control is basically a ___________ control method. Armature voltage control. Field diverter control. Armature resistance control. Field control. Armature voltage control. Field diverter control. Armature resistance control. Field control. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The no load and full load speed of DC mototr are 1400 rpm and 1200 rpm respectively. What is the percentage speed regulation of the motor? 18.25%. 15.30%. 16.67%. 14.28%. 18.25%. 15.30%. 16.67%. 14.28%. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A commutator with a diameter of 50 cm rotating at 1000 rpm. For a brush width of 1.5 cm, find the time of commutation in ms. 0.649. 0.443. 0.573. 0.512. 0.649. 0.443. 0.573. 0.512. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines For a dc machine shunt resistance and armature resistance values are high and high low and low high and low low and high high and high low and low high and low low and high ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Which of the following methods are used to control the speed of DC motors is All of these supply voltage control field current control armature circuit resistance control All of these supply voltage control field current control armature circuit resistance control ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A transformer has maximum efficiency at 3/4 load. The ratio of iron loss and full load copper loss is 4/3. 3/4. 16/9. 9/16. 4/3. 3/4. 16/9. 9/16. ANSWER DOWNLOAD EXAMIANS APP
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