DC Generators The field coil of dc generator are usually made of Cast iron Mica Copper Carbon Cast iron Mica Copper Carbon ANSWER DOWNLOAD EXAMIANS APP
DC Generators For the same rating, a dc machine has_______ an ac machines. None of the listed here The same weight as Less weight than More weight than None of the listed here The same weight as Less weight than More weight than ANSWER DOWNLOAD EXAMIANS APP
DC Generators The purpose of providing dummy coils in a generator is To amplify voltage To provide mechanical balance for the rotor To reduce eddy current losses To enhance flux density To amplify voltage To provide mechanical balance for the rotor To reduce eddy current losses To enhance flux density ANSWER DOWNLOAD EXAMIANS APP
DC Generators The essential condition for parallel operation of two D.C. generators is that they have Same kW rating The same drooping voltage characteristics The same operation r.p.m. Same percentage regulation Same kW rating The same drooping voltage characteristics The same operation r.p.m. Same percentage regulation ANSWER DOWNLOAD EXAMIANS APP
DC Generators In a D.C. generator Magnetization characteristic = external characteristic External resistance = internal characteristic armature reaction Internal characteristic = magnetization characteristic ohmic drop External characteristic = magnetization characteristic ohmic drop armature reaction Magnetization characteristic = external characteristic External resistance = internal characteristic armature reaction Internal characteristic = magnetization characteristic ohmic drop External characteristic = magnetization characteristic ohmic drop armature reaction ANSWER DOWNLOAD EXAMIANS APP
DC Generators While applying Fleming's right-hand rule to and the direction of induced e.m.f., the thumb points towards Direction of motion of the conductor if forefinger points in the direction of generated e.m.f. Direction of flux Direction of induced e.m.f. Direction of motion of conductor, if forefinger points along the lines of flux Direction of motion of the conductor if forefinger points in the direction of generated e.m.f. Direction of flux Direction of induced e.m.f. Direction of motion of conductor, if forefinger points along the lines of flux ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS