DC Motors Which of the following motor is preferred for operation in highly explosive atmosphere? Air motor Series motor Battery operated motor Shunt motor Air motor Series motor Battery operated motor Shunt motor ANSWER DOWNLOAD EXAMIANS APP
DC Motors One D.C. motor drives another D.C. motor. The second D.C. motor when excited and driven Does not run as a generator Also runs as a motor comes to stop after sometime None of these Runs as a generator Does not run as a generator Also runs as a motor comes to stop after sometime None of these Runs as a generator ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used None of these Where load is constant Where constant operating speed is needed Where load changes frequently None of these Where load is constant Where constant operating speed is needed Where load changes frequently ANSWER DOWNLOAD EXAMIANS APP
DC Motors The dirction of rotation of a dc series motor can be changed by None of the listed here Interchanging field terminals Either of Interchanging field or Interchanging supply Interchanging supply terminals None of the listed here Interchanging field terminals Either of Interchanging field or Interchanging supply Interchanging supply terminals 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 high value resistor is connected across the field winding Armature is temporarily open circuited A resistance is connected parallel to the armature A resistance is connected in series with armature A high value resistor is connected across the field winding Armature is temporarily open circuited A resistance is connected parallel to the armature A resistance is connected in series with armature ANSWER DOWNLOAD EXAMIANS APP
DC Motors The compensating winding is connected in Series with armature None of the listed here Parallel with armature Series-parallel with armature Series with armature None of the listed here Parallel with armature Series-parallel with armature ANSWER DOWNLOAD EXAMIANS APP
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