Briefly explain the fundamental principles which make the compression refrigeration cycle work
What will be an ideal response?
"Cold" is not a substance or an energy form, it is the lack of heat. Heat travels from hot to cold.
Liquids absorb large amounts of heat when they boil off to a gas. Gasses give off large amounts of heat when they condense to a liquid. When something is boiling or condensing its temperature remains the same.
The temperature at which a liquid boils is controlled by its pressure.
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Briefly discuss the following types of wireless cellular phone technologies: Bluetooth™ and radio broadcast.
What will be an ideal response?
Which type of hybrid electric vehicle has idle stop operation?
A) Strong hybrids only B) Strong, mild, and medium hybrids C) Medium hybrids only D) Mild hybrids only
If the engine oil is not changed regularly, what is the most likely fault that can occur to an engine equipped with variable valve timing (VVT)?
A) Low oil pressure diagnostic trouble code (DTC) B) The filter screens on the actuator control valve become clogged C) A no-start condition because the camshaft cannot rotate D) Any of the above
Which of the following species has the largest global numbers?
A. Chickens B. Sheep C. Swine D. Horses