Course 59983

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Refer to the circuit shown above. Describe the actions controlled by the pressure switch in this circuit.

When the contacts of the pressure switch close, the motor will stop running if it is already running. If the motor is not running, it will start the motor. The red warning light will turn on.

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When the contacts of the pressure close, the motor will stop running if it is already running, or the motor will be prevented from starting if it is not running; the red warning light will be turned on.

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When the pressure switch contacts close, if the motor is already running, it will continue to run. If the motor is not running, it will start. The red pilot light will be turned off.

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When the pressure switch contacts close, the motor will stop running if it is already running. If the motor is not running, it will be prevented from starting. The red pilot light will be turned off.

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In the circuit shown above, the pressure switch is shown as ____.

normally open

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normally open held closed

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normally closed

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normally closed held open

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In the circuit shown above, assume that the UP pushbutton has been pressed and the platform is being raised. Now assume that the OL contact opens when the platform is approximately half way between being full up and full down. Which of the following best describes the action of the platform and the operation of the circuit?

The platform will remain in position until the DOWN pushbutton is pressed. The platform will then lower to the full down position.

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The platform will continue to rise until it reaches the full up position.

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The platform will automatically return to the full down position.

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The platform will remain in position. The STOP button must then be pressed before the DOWN pushbutton can be used to lower the platform to the full down position.

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