. Since the
electric motor is being used as a timer, it must run at a constant
speed. Ac and dc
electric motors can be used as timing
motors. Dc
electric timing
motors are used for portable applications, or where
high acceleration and
low speed variations are required. These
electric motors offer advantages, which include starting torque as
high as ten times running torque, efficiency from 50 to 70%, and relatively easy
speed control. But some form of
speed governor, either mechanical...
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