Electrical Machines If the field circuit of a DC shunt motor is opened The motor will attain dangerously high speed. DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. The motor will attain dangerously high speed. DC Shunt Motor The speed of motor will be reduced. The armature current will reduce. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines A DC generator without commutator is a DC generator DC motor AC generator induction motor DC generator DC motor AC generator induction motor ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines What is power factor of a 3 - φ induction motor at no load? High. Low. Same as full load. Equal to 1. High. Low. Same as full load. Equal to 1. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The sparking at the the brushes, in a DC machines is due to presence of commutator. high resistance of carbon brushes. armature reaction. reactance voltage. presence of commutator. high resistance of carbon brushes. armature reaction. reactance voltage. ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines The torque speed characteristics of a AC servomotor is approximately any of the above hyperbola parabola linearised any of the above hyperbola parabola linearised ANSWER DOWNLOAD EXAMIANS APP
Electrical Machines Pole changing methods are suitable only for ___________ type induction motor. wound. cage. none of these. linear. wound. cage. none of these. linear. ANSWER DOWNLOAD EXAMIANS APP
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