Answer the following statement(s) true (T) or false (F)
1. Short cycling is a condition that occurs when the compressor is turned off immediately after the pressure has been stabilized.
2. Short cycling can be acceptable in some cases.
3. Many short-cycle timers use electronic components to affect a time delay.
4. The delay-on-break short-cycle timer begins its timing sequence when the thermostat contacts close.
5. Some electronic controls combine more than one function in a single unit.
1. FALSE
2. FALSE
3. TRUE
4. FALSE
5. TRUE
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The method of logical reasoning that is associated with the sciences is called _____
Fill in the blank(s) with correct word
Vesicles and arbuscules are structures typically formed ________
A) in bacterial cells when attacked by protozoa. B) in root cells by fungi when they form mycorrhizae C) above ground by certain soil fungi D) by mesofauna when they incorporate organic materials into the soil E) none of the above
Why are butane lighters dangerous in a shop environment?
A. Metal parts can cause electrical shorts. B. Butane reacts explosively with certain automotive fluids. C. Most butane lighters leak. D. They are an extreme explosive potential.
What is the purpose of using an outdoor ambient thermostat on a heat pump installation?
A) To cycle the heat pump based on the outside temperature instead of the inside temperature B) To prevent the heat pump from operating in heat unless it is cold outside C) To bring the heat pump on early if the temperature drops D) To prevent the auxiliary heat from operating above the system balance point