Electrical Machines Eg (generated emf) and Eb (back emf) both are different. none of above. same. changes. different. none of above. same. changes. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Neglecting all losses, the developed torque (T) of DC separately excited motor, operating under constant terminal voltage is reduced to its output power (P) as T2 ∝ P3. T ∝ P. T is independent of P. T ∝ √P. T2 ∝ P3. T ∝ P. T is independent of P. T ∝ √P. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In DC machine yoke offers produce working flux mechanical protection to the machine flux path completion both A and B produce working flux mechanical protection to the machine flux path completion both A and B ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What will be the maximum power factor of an induction motor for dispersion coefficient of 0.05? 0.905. 1.1. 20. 0.05. 0.905. 1.1. 20. 0.05. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC machine is a convection machine. conduction machine. none of above are correct. both are correct. convection machine. conduction machine. none of above are correct. both are correct. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines φA DC shunt machine generates 250 V on open circuit at 1000 RPM. Armature resistance is 0.5 Ω, field resistance 250 Ω. When running as a motor takes 4 A at 250 V. Calculate the speed when running as a motor taking 40 A at 250 V. Armature reaction weakens the field by 4%. 960 RPM 920 RPM 970 RPM 940 RPM 960 RPM 920 RPM 970 RPM 940 RPM ANSWER DOWNLOAD EXAMIANS APP
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