Reta Final Test 1 Exam 96 Questions
How are temperature and heat related? -Correct Answer ✔ ✔
Temperature is a measure of the intensity of the heat in an object
what does temperature indicate -Correct Answer ✔ ✔ intensity of
heat energy in an object
what is required to move heat from one object to another -Correct
Answer ✔ ✔ temperature difference
which of these is required to obtain a valid reading from a pressure
temperature chart -Correct Answer ✔ ✔ the refrigerant must be
in a saturated condition
which of these is an essential component of a mechanical
refrigeration system -Correct Answer ✔ ✔ expansion device
,what is a function of a compressor in a mechanical refrigeration
system -Correct Answer ✔ ✔ to accept vapor from the evaporator
and compress it to increase its pressure and temperature
which of these accurately describes subcooled liquid -Correct Answer
✔ ✔ liquid cooled below at saturation pressure
what does the term compression ratio refer to -Correct Answer ✔
✔ the ratio of discharge pressure to suction pressure in PSIA
which refrigerant is more forgiving to moisture in the refrigeration
system -Correct Answer ✔ ✔ R-717
which of these is most likely to occur when air leaks into a
refrigeration system -Correct Answer ✔ ✔ an increase in
compressor discharge pressure
which of these is the greatest risk from closing valves on each end of a
liquid line between a liquid pump and an evaporator during
, maintenance of an ammonia refrigeration system -Correct Answer ✔
✔ rupture of the line if the liquid warms
under what conditions do halocarbon refrigerants become most
hazardous -Correct Answer ✔ ✔ when did we come in contact
with an open flame
which of these conditions is indicated in an ammonia condenser
operating with 180 PSIG pressure at the drain outlet and 90 degrees
Fahrenheit liquid temperature leaving the condenser -Correct Answer
✔ ✔ non condensables in the condenser
What Will Liquid refrigerant trap in a pipe do when heated -Correct
Answer ✔ ✔ expand
which industrial compressor would be direct drive at 3600 RPM -
Correct Answer ✔ ✔ screw compressor
why is the discharge temperature of a screw compressor lower than
the discharge temperature of a reciprocating compressor -Correct
How are temperature and heat related? -Correct Answer ✔ ✔
Temperature is a measure of the intensity of the heat in an object
what does temperature indicate -Correct Answer ✔ ✔ intensity of
heat energy in an object
what is required to move heat from one object to another -Correct
Answer ✔ ✔ temperature difference
which of these is required to obtain a valid reading from a pressure
temperature chart -Correct Answer ✔ ✔ the refrigerant must be
in a saturated condition
which of these is an essential component of a mechanical
refrigeration system -Correct Answer ✔ ✔ expansion device
,what is a function of a compressor in a mechanical refrigeration
system -Correct Answer ✔ ✔ to accept vapor from the evaporator
and compress it to increase its pressure and temperature
which of these accurately describes subcooled liquid -Correct Answer
✔ ✔ liquid cooled below at saturation pressure
what does the term compression ratio refer to -Correct Answer ✔
✔ the ratio of discharge pressure to suction pressure in PSIA
which refrigerant is more forgiving to moisture in the refrigeration
system -Correct Answer ✔ ✔ R-717
which of these is most likely to occur when air leaks into a
refrigeration system -Correct Answer ✔ ✔ an increase in
compressor discharge pressure
which of these is the greatest risk from closing valves on each end of a
liquid line between a liquid pump and an evaporator during
, maintenance of an ammonia refrigeration system -Correct Answer ✔
✔ rupture of the line if the liquid warms
under what conditions do halocarbon refrigerants become most
hazardous -Correct Answer ✔ ✔ when did we come in contact
with an open flame
which of these conditions is indicated in an ammonia condenser
operating with 180 PSIG pressure at the drain outlet and 90 degrees
Fahrenheit liquid temperature leaving the condenser -Correct Answer
✔ ✔ non condensables in the condenser
What Will Liquid refrigerant trap in a pipe do when heated -Correct
Answer ✔ ✔ expand
which industrial compressor would be direct drive at 3600 RPM -
Correct Answer ✔ ✔ screw compressor
why is the discharge temperature of a screw compressor lower than
the discharge temperature of a reciprocating compressor -Correct
