NCCER Module 5 Introduction to cooling
Questions and Correct Answers/ Latest
Update / Already Graded
The Celsius scale is based on boiling water having a temperature at
sea level of_?
Ans: 100°
Subcooling occurs_.
Ans: After all vapor has changed to liquid
When the temperature of a vapor is higher than its boiling point, the
vapor is_?
Ans: Superheated
When heat is carried from one object to another by means of a
moving liquid or gas, it is being transferred by_?
, 2 | Page
Ans: Convection
A ton of refrigeration is equal to_?
Ans: 12,000 BTUs per hour
When the pressure on a liquid in a closed space is increased, what
happens to the boiling point?
Ans: It raises the boiling point
In a refrigeration system, the high-pressure, high temperature vapor is
converted into a high pressure, high temperature liquid by the_?
Ans: Condenser
Most all of today's standard refrigerant gauge manifold have a high
pressure gauge that goes up to_?
Ans: 800 psig