Electrical Machines In a seperately excited DC Motor if field current is increased, it will Reduce starting torque. Increase acceleration duration. Reduce armature heating. Increase speed Reduce starting torque. Increase acceleration duration. Reduce armature heating. Increase speed ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a synchronous motor, damper windings are provided on rotor shaft. pole faces. stator frame. None of these rotor shaft. pole faces. stator frame. None of these ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines During hunting of a synchronous motor negative phase sequence currents are generated. harmonic are developed in the armature circuit. damper bar develops torque. field excitation increases. negative phase sequence currents are generated. harmonic are developed in the armature circuit. damper bar develops torque. field excitation increases. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In an induction motor, what is the ratio of rotor input to rotor copper loss? 1/S 1/(1-S) S 1-S 1/S 1/(1-S) S 1-S ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ideal value of voltage regulation of a device is? ∞ a positive finite value 0 a finite negative value ∞ a positive finite value 0 a finite negative value ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A delta/star transformer is connected in parallel to a star/delta transformer. The turn ratio former is x times latter, the x is 3 √3 1/√3 1/3 3 √3 1/√3 1/3 ANSWER DOWNLOAD EXAMIANS APP
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