Electrical Machines Eg (generated emf) and Eb (back emf) both are none of above. different. changes. same. none of above. different. changes. same. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC generators, the residual magnetism is of the order of 15 %. 10 %. 20 %. 2.5 %. 15 %. 10 %. 20 %. 2.5 %. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC machine, which of these parameters remain the same whether it runs as a DC motor or a DC generator? Can not be determined. Armature current. Induced emf. Mechanical power. Can not be determined. Armature current. Induced emf. Mechanical power. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 500 V, 120 KW, 50 Hz, star connected synchronous motor operating at 0.8 power factor leading has full load efficiency of 91%. The armature resistance is equal to 0.08Ω. The magnitude of armature current is nearly equal to 127 A. 190 A. 240 A. 173 A. 127 A. 190 A. 240 A. 173 A. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Ward Leonard control provides speed control above rated speed. below rated speed. in one direction only. in both direction. above rated speed. below rated speed. in one direction only. in both direction. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Transformers operating in parallel will share the load depending upon their percentage impedance. efficiency. rating. leakage reactance. percentage impedance. efficiency. rating. leakage reactance. ANSWER DOWNLOAD EXAMIANS APP
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