Electrical Machines What is the phase difference between two windings of A.C servomotor ? 60°. 90°. 120°. 30°. 60°. 90°. 120°. 30°. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 230 V dc series generator is driven at its rated speed. The no-load voltage across its armature terminals would be somewhat less than 230 V 6 V somewhat more than 230 V 230 V somewhat less than 230 V 6 V somewhat more than 230 V 230 V ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the eddy current loss if the supply frequency of a transformer becomes double? Eight times. Doubled. Remains same. Four times. Eight times. Doubled. Remains same. Four times. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a single phase induction motor driving a fan load, the reason for having a high resistance rotor is to achieve low starting torque. reduced size. quick acceleration. high efficiency. low starting torque. reduced size. quick acceleration. high efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If a transformer has turns ratio K, the primary and secondary current are I1 and I2 respectively and magnetizing current and core loss component of no load current Iμ and Iw respectively, then I1 = KI2 + Iw. I1 = KI2 + Iμ. I1 = KI2. I1 = KI2 + Iw + Iμ.ok I1 = KI2 + Iw. I1 = KI2 + Iμ. I1 = KI2. I1 = KI2 + Iw + Iμ.ok ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC Shunt Motor has disadvantage(s) of constant speed. less expensive. none of above. not suitable for rapidly changing loads. constant speed. less expensive. none of above. not suitable for rapidly changing loads. ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS