Answer the following statement(s) true (T) or false (F)

1. Valves are mechanical devices designed to control the flow of fluids.

2. A solenoid valve is a combination of three basic units.

3. Two-way solenoid valves can be used to control water, oil, and airflow.

4. The armature is also known as plunger
5. The armature is made from a high-grade copper.


1. TRUE
2. FALSE
3. TRUE
4. TRUE
5. FALSE

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Molten weld metal tends to have a low surface tension.

Answer the following statement true (T) or false (F)

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The condition where a heart stops effectively pumping blood due to an electrical shock is known as _____________________.

What will be an ideal response?

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Why do geothermal heat pump systems work better in cold climates than air source systems?

What will be an ideal response?

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A drum switch is a mechanically held device that allows the _____________________ of rotation of a motor to be changed.

Fill in the blank(s) with the appropriate word(s).

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