DC Motors Which one of the following is not necessarily the advantage of D.C. motors over A.C. motors? High starting torque Wide speed range Low cost Stability High starting torque Wide speed range Low cost Stability ANSWER DOWNLOAD EXAMIANS APP
DC Motors Where D.C. motor of H.P. 12 or more requires frequent starting, stopping, reversing and speed control Drum type controller is used Four point starter is used Three point starter is used All above can be used Drum type controller is used Four point starter is used Three point starter is used All above can be used ANSWER DOWNLOAD EXAMIANS APP
DC Motors If the terminals of armature of D.C. motor are interchanged, this action will offer following kind of braking None of these Plugging Regenerative Dynamic braking None of these Plugging Regenerative Dynamic braking ANSWER DOWNLOAD EXAMIANS APP
DC Motors The armature voltage control of dc motor provides None of the listed here Constant voltage drive Constant current drive Constant torque drive None of the listed here Constant voltage drive Constant current drive Constant torque drive ANSWER DOWNLOAD EXAMIANS APP
DC Motors D.C. series motors are used None of these Where constant operating speed is needed Where load is constant Where load changes frequently None of these Where constant operating speed is needed Where load is constant Where load changes frequently 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 cheap Is simple in construction None of the listed here Provides fine speed control Is cheap Is simple in construction ANSWER DOWNLOAD EXAMIANS APP
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