The raised, rectangular sheet metal frame that a rooftop unit rests on is called a:
A) Pad. B) Fixture. C) Curb. D) Frame.
C
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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.
Transformers are rated by their primary voltage, secondary voltage, and volt-amperes (VA).
Answer the following statement true (T) or false (F)
What is the most common source of the electric energy used in the electric circuits of a heating, cooling, or refrigeration system?
What will be an ideal response?
Kinetics is an element of physics that deals with the effects of forces that cause motion in mechanisms.
Answer the following statement true (T) or false (F)