Electrical Machines In case of DC shunt motor if load is reduced The speed will remains almost constant. DC Shunt Motor The speed will increase abruptly. The speed will increase in proportion to reduction in load. The speed will remains almost constant. DC Shunt Motor The speed will increase abruptly. The speed will increase in proportion to reduction in load. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines If the air gap of IM is increased, ____________ will increase. air gap flux. power factor. speed. magnetizing current. air gap flux. power factor. speed. magnetizing current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines In a DC Shunt Motor the speed can be increased by Decreasing the field current. Increasing the field current. Increasing the field current. Increasing the armature current. Decreasing the field current. Increasing the field current. Increasing the field current. Increasing the armature current. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC cumulatively compounded motor delivers rated load torque at rated speed. If the series field is short-circuited, then the armature current and speed will both increase increase and decrease respectively decrease and increase respectively both decrease both increase increase and decrease respectively decrease and increase respectively both decrease ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines DC machine is a both are correct. convection machine. none of above are correct. conduction machine. both are correct. convection machine. none of above are correct. conduction machine. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A 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 efficiency when running as a motor taking 40 A at 250 V. Armature reaction weakens the field by 4%. 67.5% 78.5% 72.5% 82.5% 67.5% 78.5% 72.5% 82.5% ANSWER DOWNLOAD EXAMIANS APP
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