Refrigeration Final Exam Study questions |\ |\ |\ |\
with answers
|\ |\
Specific Heat is - CORRECT ANSWERS ✔✔the amount of heat
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
neccessary to raise the temperature of a substance one deg F
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
What are two types of heat - CORRECT ANSWERS ✔✔sensible and
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
latent
|\
Heat flow by conduction is - CORRECT ANSWERS ✔✔energy
|\ |\ |\ |\ |\ |\ |\ |\ |\
travelling from one molecule to another
|\ |\ |\ |\ |\
Radiation can be defined as - CORRECT ANSWERS ✔✔transfer of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
heat through the air without heating the air and is absorbed by a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
solid object
|\ |\
Water freezes at - CORRECT ANSWERS ✔✔32 deg f
|\ |\ |\ |\ |\ |\ |\ |\
Refrigeration is - CORRECT ANSWERS ✔✔the tranfer of heat from
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a place where it is not wanted to a place where it is less
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
objectionable
Heat flows from - CORRECT ANSWERS ✔✔hot to cold
|\ |\ |\ |\ |\ |\ |\ |\
A btu is - CORRECT ANSWERS ✔✔British Thermal Unit
|\ |\ |\ |\ |\ |\ |\ |\
,A btu can be defined as - CORRECT ANSWERS ✔✔the amount of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
heat required to raise one lb of water one deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
What is the definition of temperature - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔the measure of the intensity of heat |\ |\ |\ |\ |\ |\
Absolute zero is - CORRECT ANSWERS ✔✔-460 deg f |\ |\ |\ |\ |\ |\ |\ |\
Atmospheric pressure at sea level is - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔14.7 psi |\
32 deg f equals - CORRECT ANSWERS ✔✔0 deg c
|\ |\ |\ |\ |\ |\ |\ |\ |\
70 deg f equals - CORRECT ANSWERS ✔✔21.1 deg c
|\ |\ |\ |\ |\ |\ |\ |\ |\
100 deg C equals - CORRECT ANSWERS ✔✔212 deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\
Water boils at - CORRECT ANSWERS ✔✔212 deg f
|\ |\ |\ |\ |\ |\ |\ |\
A rise in sensible heat causes - CORRECT ANSWERS ✔✔a change
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
of temperature of a substance
|\ |\ |\ |\
Latent heat causes - CORRECT ANSWERS ✔✔a change of state
|\ |\ |\ |\ |\ |\ |\ |\ |\
The amount of heat required to raise two pounds of ice two deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
is - CORRECT ANSWERS ✔✔2 btu
|\ |\ |\ |\ |\ |\
, As the temperature of a substance increases the molecules in the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
material - CORRECT ANSWERS ✔✔travel faster
|\ |\ |\ |\ |\ |\
PSIG indicates - CORRECT ANSWERS ✔✔pounds per square inch
|\ |\ |\ |\ |\ |\ |\ |\ |\
gauge
How many btus are required to change one lb of ice at 20 deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
to one lb of steam at 220 deg f - CORRECT ANSWERS ✔✔1304
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
btu
Which of the following represents a differnet temperature than
|\ |\ |\ |\ |\ |\ |\ |\ |\
the other three - CORRECT ANSWERS ✔✔475 deg k
|\ |\ |\ |\ |\ |\ |\ |\
What is 24 psig in absolute pressure - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔38.7 psia |\
The pressure exerted by a block of steel is - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔downward
The latent heat of vaporization of water is - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔970.3 btu/lb |\
the specific heat of ice is - CORRECT ANSWERS ✔✔.5 btu/lb
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
with answers
|\ |\
Specific Heat is - CORRECT ANSWERS ✔✔the amount of heat
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
neccessary to raise the temperature of a substance one deg F
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
What are two types of heat - CORRECT ANSWERS ✔✔sensible and
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
latent
|\
Heat flow by conduction is - CORRECT ANSWERS ✔✔energy
|\ |\ |\ |\ |\ |\ |\ |\ |\
travelling from one molecule to another
|\ |\ |\ |\ |\
Radiation can be defined as - CORRECT ANSWERS ✔✔transfer of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
heat through the air without heating the air and is absorbed by a
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
solid object
|\ |\
Water freezes at - CORRECT ANSWERS ✔✔32 deg f
|\ |\ |\ |\ |\ |\ |\ |\
Refrigeration is - CORRECT ANSWERS ✔✔the tranfer of heat from
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
a place where it is not wanted to a place where it is less
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
objectionable
Heat flows from - CORRECT ANSWERS ✔✔hot to cold
|\ |\ |\ |\ |\ |\ |\ |\
A btu is - CORRECT ANSWERS ✔✔British Thermal Unit
|\ |\ |\ |\ |\ |\ |\ |\
,A btu can be defined as - CORRECT ANSWERS ✔✔the amount of
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
heat required to raise one lb of water one deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
What is the definition of temperature - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔the measure of the intensity of heat |\ |\ |\ |\ |\ |\
Absolute zero is - CORRECT ANSWERS ✔✔-460 deg f |\ |\ |\ |\ |\ |\ |\ |\
Atmospheric pressure at sea level is - CORRECT ANSWERS |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔14.7 psi |\
32 deg f equals - CORRECT ANSWERS ✔✔0 deg c
|\ |\ |\ |\ |\ |\ |\ |\ |\
70 deg f equals - CORRECT ANSWERS ✔✔21.1 deg c
|\ |\ |\ |\ |\ |\ |\ |\ |\
100 deg C equals - CORRECT ANSWERS ✔✔212 deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\
Water boils at - CORRECT ANSWERS ✔✔212 deg f
|\ |\ |\ |\ |\ |\ |\ |\
A rise in sensible heat causes - CORRECT ANSWERS ✔✔a change
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
of temperature of a substance
|\ |\ |\ |\
Latent heat causes - CORRECT ANSWERS ✔✔a change of state
|\ |\ |\ |\ |\ |\ |\ |\ |\
The amount of heat required to raise two pounds of ice two deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
is - CORRECT ANSWERS ✔✔2 btu
|\ |\ |\ |\ |\ |\
, As the temperature of a substance increases the molecules in the
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
material - CORRECT ANSWERS ✔✔travel faster
|\ |\ |\ |\ |\ |\
PSIG indicates - CORRECT ANSWERS ✔✔pounds per square inch
|\ |\ |\ |\ |\ |\ |\ |\ |\
gauge
How many btus are required to change one lb of ice at 20 deg f
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
to one lb of steam at 220 deg f - CORRECT ANSWERS ✔✔1304
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
btu
Which of the following represents a differnet temperature than
|\ |\ |\ |\ |\ |\ |\ |\ |\
the other three - CORRECT ANSWERS ✔✔475 deg k
|\ |\ |\ |\ |\ |\ |\ |\
What is 24 psig in absolute pressure - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔38.7 psia |\
The pressure exerted by a block of steel is - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔downward
The latent heat of vaporization of water is - CORRECT ANSWERS
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\ |\
✔✔970.3 btu/lb |\
the specific heat of ice is - CORRECT ANSWERS ✔✔.5 btu/lb
|\ |\ |\ |\ |\ |\ |\ |\ |\ |\
