Engineering, 13.06.2020 02:57 SOFIA3402
Question 3 (5 points)
Two HVAC/R technicians are discussing the use of flaring tools. Technician A says
that a flaring tool is used to form the end of piece of copper tubing to allow it to be
connected using a flare nut and fitting. Technician B says that a double flare is used
on connections that will be repeatedly loosened and retightened. Which one of the
following statements is correct?
Only Technician A is correct.
Only Technician B is correct.
Both Technician A and Technician B are correct.
Neither Technician A nor Technician B is correct.
Answers: 2
Engineering, 04.07.2019 18:10
Fluids at rest possess no flow energy. a)- true b)- false
Answers: 3
Engineering, 04.07.2019 18:20
Athin walled concentric tube exchanger is used to cool engine oil from 160°c to 60°c with water that is available at 25°c acting as a coolant. the oil and water flow rates are each at 2 kg/s, and the diameter of the inner tube is 0.5 m and the corresponding value of the overall heat transfer coefficient is 250 w/m2. oc. how long must the heat exchanger be to accomplish the desired cooling? cpwater=4.187 kj/kg-candcpengine el=2.035 kj/kg·°c, oil . 120]
Answers: 1
Engineering, 04.07.2019 19:10
When subject to a steady load (within elastic range) over a long period of time, what is the major difference in material behavoir between steel and plastic?
Answers: 2
Engineering, 04.07.2019 19:10
What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.
Answers: 1
Question 3 (5 points)
Two HVAC/R technicians are discussing the use of flaring tools. Technician A...
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