DC Motors In a D.C. generator, the iron losses mainly take place in Commutator Yoke Armature conductors Armature rotor Commutator Yoke Armature conductors Armature rotor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Ward-Leonard control is basically a Field divertor method Voltage control method Field control method Armature resistance control method Field divertor method Voltage control method Field control method Armature resistance control method ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which motor should be used for centrifugal pumps? Either series or shunt Series motor None of the listed here Shunt motor Either series or shunt Series motor None of the listed here Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which D.C. motor has got maximum self loading property? Cumulatively compounded motor Series motor Shunt motor Differentially compounded motor Cumulatively compounded motor Series motor Shunt motor Differentially compounded motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following losses are significantly reduced by laminating the core of a D.C. generator? Hysteresis losses Windage losses Copper losses Eddy current losses Hysteresis losses Windage losses Copper losses Eddy current losses ANSWER DOWNLOAD EXAMIANS APP
DC Motors As there is no back e.m.f. at the instant of starting a D.C. motor, in order to prevent a heavy current from flowing though the armature circuit A resistance is connected in series with armature A high value resistor is connected across the field winding A resistance is connected parallel to the armature Armature is temporarily open circuited A resistance is connected in series with armature A high value resistor is connected across the field winding A resistance is connected parallel to the armature Armature is temporarily open circuited ANSWER DOWNLOAD EXAMIANS APP
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