Electrical Machines Hunting in a synchronous cannot be due to variable load. windage friction. variable frequency. variable supply voltage. variable load. windage friction. variable frequency. variable supply voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines stepped cores are used in transformers in order to reduce reluctance of core. volume of copper. iron loss. volume of iron. reluctance of core. volume of copper. iron loss. volume of iron. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In shunt dc motor the direction of rotation of the motor will reversed. When either field terminals are reversed or armature terminals are reversed. only field terminals are changed. none of above. only armature terminals are reversed. either field terminals are reversed or armature terminals are reversed. only field terminals are changed. none of above. only armature terminals are reversed. 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%. 970 RPM 940 RPM 960 RPM 920 RPM 970 RPM 940 RPM 960 RPM 920 RPM ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In case of a compensated DC series motor, the compensating winding is provided As a separate unit. In parallel with the armature winding. In series with the armature winding. In parallel with the field winding. As a separate unit. In parallel with the armature winding. In series with the armature winding. In parallel with the field winding. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In above question, the output power delivered by generator G1 and G2 will be 6.3 kW, 9.3 kW. 9.6 kW, 12 kW. 5.7 kW, 8.7 kW. 9.3 kW, 9.3 kW. 6.3 kW, 9.3 kW. 9.6 kW, 12 kW. 5.7 kW, 8.7 kW. 9.3 kW, 9.3 kW. ANSWER DOWNLOAD EXAMIANS APP
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