What keeps the engine running at a constant speed?
What keeps the engine running at a constant speed? The current through the motor armature is caused to pass through a resistance (rm/10) that is, for example, approximately 0.1 as large as the ohmic resistance of the motor. ... How does a car stay at a constant speed? An object at rest stays at rest and an object in motion stays in motion with constant speed in the same direction unless acted upon by an unbalanced force. Since the two forces cancel out (i.e. are balanced) the car tends to stay in motion at a constant speed and direction. How...