DC Motors Carbon brushes are preferable to copper brushes because _____ They have lower resistance They have longer life They reduce armature reaction They reduce sparking They have lower resistance They have longer life They reduce armature reaction They reduce sparking ANSWER DOWNLOAD EXAMIANS APP
DC Motors A dc motor is still used in industrial applications because it None of the listed here Provides fine speed control Is simple in construction Is cheap None of the listed here Provides fine speed control Is simple in construction Is cheap ANSWER DOWNLOAD EXAMIANS APP
DC Motors The speed of a _____ motor is practically constant. Cumulatively compounded Series Differentially compounded Shunt Cumulatively compounded Series Differentially compounded Shunt ANSWER DOWNLOAD EXAMIANS APP
DC Motors Flywheel is used with D.C. compound motor to reduce the peak demand by the motor, compound motor will have to be Under compounded Differentially compounded Cumulatively compounded Level compounded Under compounded Differentially compounded Cumulatively compounded Level compounded ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. generators are normally designed for maximum efficiency around Rated r.p.m. Rated voltage All of these Full load Rated r.p.m. Rated voltage All of these Full load ANSWER DOWNLOAD EXAMIANS APP
DC Motors Which of the following motors is most suitable for signalling devices and many kinds of timers ? C. series motor C. shunt motor Induction motor Reluctance motor C. series motor C. shunt motor Induction motor Reluctance motor ANSWER DOWNLOAD EXAMIANS APP
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