Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 10% 40% 5% 19% 10% 40% 5% 19% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A series motor is efficiently suitable for none of these. constant speed operation. high starting torque operation. low starting torque operation. none of these. constant speed operation. high starting torque operation. low starting torque operation. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 220 V dc machine has an armature resistance of 1Ω.If the full-load current is 20 A, the differenc in the induced voltages when the machine is running as a motor and as a generator is 40 V 20 V zero 50 V 40 V 20 V zero 50 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Maximum power developed in a cylindrical synchronous machine depends on excitation synchronous reactance load angle both 1and 2 excitation synchronous reactance load angle both 1and 2 ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 3 stack stepper motor has 12 teeth on stator as well as on rotor. Determine the step size when each stack excited? 10°. 30°. 45°. 24°. 10°. 30°. 45°. 24°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The direction of rotation of a 3 - Φ induction motor can be reversed by transposing any two leads from slip rings. transposing all the three leads from the supply. disconnecting any one phase. transposing any two leads from supply. transposing any two leads from slip rings. transposing all the three leads from the supply. disconnecting any one phase. transposing any two leads from supply. ANSWER DOWNLOAD EXAMIANS APP
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