A Vehicle Waiting at a Stop Light with the Brakes

question 64

Multiple Choice

A vehicle waiting at a stop light with the brakes applied is held in place by _____ friction.

• A) static
• B) kinetic
• C) both "static" and "kinetic"
• D) neither "static" nor "kinetic"

Explain the differences between overcurrent protection and overload protection.

Understand the functioning and importance of overload contacts in control circuits.

Recognize common documentation forms for motor control circuits.

Explain the logical operation documentation of control circuits.

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Definitions:

Cam-Actuated

Mechanisms that are driven or moved by a cam, a rotating or sliding piece in a mechanical linkage used to provide variable motion.

Radial Piston Pump

A type of hydraulic pump where pistons are arranged radially around a central axis, used for high pressure and precise control applications.

Common-Rail

A diesel engine fuel injection system where the fuel is supplied to the injectors from a high-pressure accumulator common for all cylinders.

Counterbalance Valve

A valve that resists flow in one direction while permitting free flow in the other. Often connected to the outlet of a double-acting ram to support weight and prevent sudden, uncontrolled dropping.