INTRODUCTION - 4 - MILKING MACHINE_Vacuum Production and Control

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* 1. Enter your First and Last Name

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* 2. A pressure difference is caused by ________.

Removing part of the air molecules from a confined space.

Pulling on the desired low pressure area.

A simple chemical reaction between CO2 and H2O.

Removing part of the air molecules from an open space.

A simple chemical reaction between heat, ethanol, and air.

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* 3. A lower pressure corresponds to ___________.

A higher vacuum.

A lower vacuum.

Pressure is not related to vacuums.

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* 4. Air molecules at higher pressure attempt to "fill the void" created by fewer molecules in areas of vacuum. This results in a force developed in what direction?

A force towards areas of negative pressure or vacuum.

A force towards areas of positive pressure or vacuum.

There is no force created.

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* 5. When the pressure is equalized between two areas, pressure difference is eliminated – no force and no air flow in any direction.

True

False

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* 6. Vacuum gauges can either be mechanical or electronic devices.

True

False

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* 7. The main job of the vacuum pump is to __________.

Pump air into the milking machine system to create a partial pressure.

Pull the milk out.

Remove air from the milking machine system to create a partial pressure.

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* 8. Select the correct matches of a regulator with the given vacuum and air conditions in the milking machine system.

More air entering the system than being removed (vacuum level drops): regulator closes to stop admitting air

More air is being removed from the system than is entering (vacuum level rises): regulator opens to admit air

There is no air entering the system

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* 9. In most milking machines air is removed from milking machine at a steady rate by the vacuum pump which means that variability in the system is due to variable amounts of air being admitted to the system.

True

False

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* 10. Select all that apply. Some of the different types of regulators include:

Weighted regulators

Spring actuated regulators

Servo-operated regulators

Thermal-operated regulators

Electro-chemical regulators

Magnetic regulators

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* 11. The vacuum level is kept steady by the vacuum regulator.

True

False

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* 12. The pump removes only the planned air from the milking machine system.

True

False

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* 13. Air is admitted into the milking machine from many sources, both steady and intermittent.

True

False

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* 14. The vacuum pump inlet will always be the point of highest vacuum level in the milking machine and keeps all of the air moving toward it.

True

False

INTRODUCTION - 4 - MILKING MACHINE_Vacuum Production and Control

Question Title

* 1. Enter your First and Last Name

Question Title

* 2. A pressure difference is caused by ________.

Question Title

* 3. A lower pressure corresponds to ___________.

Question Title

* 4. Air molecules at higher pressure attempt to "fill the void" created by fewer molecules in areas of vacuum. This results in a force developed in what direction?

Question Title

* 5. When the pressure is equalized between two areas, pressure difference is eliminated – no force and no air flow in any direction.

Question Title

* 6. Vacuum gauges can either be mechanical or electronic devices.

Question Title

* 7. The main job of the vacuum pump is to ­­­­­­­­__________.

Question Title

* 8. Select the correct matches of a regulator with the given vacuum and air conditions in the milking machine system.

Question Title

* 9. In most milking machines air is removed from milking machine at a steady rate by the vacuum pump which means that variability in the system is due to variable amounts of air being admitted to the system.

Question Title

* 10. Select all that apply. Some of the different types of regulators include:

Question Title

* 11. The vacuum level is kept steady by the vacuum regulator.

Question Title

* 12. The pump removes only the planned air from the milking machine system.

Question Title

* 13. Air is admitted into the milking machine from many sources, both steady and intermittent.

Question Title

* 14. The vacuum pump inlet will always be the point of highest vacuum level in the milking machine and keeps all of the air moving toward it.

* 7. The main job of the vacuum pump is to __________.