Electrical Machines The supply voltage to an induction motor is reduced by 10%. By what percentage, approximately, will the maximum torque decrease? 40% 19% 10% 5% 40% 19% 10% 5% ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Oil is provided in an oil filled transformer for lubrication. insulating. both cooling and insulation. cooling. lubrication. insulating. both cooling and insulation. cooling. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines At slip s = 1 torque developed in machine is electromagnetic torque. none. maximum torque. starting torque. electromagnetic torque. none. maximum torque. starting torque. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Armature reaction in DC generators will result in short circuit. open circuit. reduction in generated emf. increase in slip. short circuit. open circuit. reduction in generated emf. increase in slip. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Dummy coils are used for reducing armature reaction. mechanical balancing. All of these increasing efficiency. reducing armature reaction. mechanical balancing. All of these increasing efficiency. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The slip of an induction motor normally does not depend on which of the following? Synchronous speed. Core loss component. Rotor speed. Shaft torque. Synchronous speed. Core loss component. Rotor speed. Shaft torque. ANSWER DOWNLOAD EXAMIANS APP
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