Based on the textbook, how should you charge an R12 walk-in refrigerator with TEV when retrofitting to any alternate HCFC refrigerant?
a. Recover the R12, weight it, then replace with HCFC at 80% of the original amount.
b. Charge until the head pressure is correct for the replacement refrigerant.
c. Charge until the head pressure is correct for R12 refrigerant.
d. Charge until the head pressure is 80% of that of R12 refrigerant.
b. Charge until the head pressure is correct for the replacement refrigerant.
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When heat is transferred by currents in liquids, the principle is known as:
A. conduction B. convection C. radiation D. evaporation
Why must mobilization be included in the cost of equipment?
What will be an ideal response?
The ____ bus is a supplemental bus network that is used along with the vehicle's main multiplexing system.
A. local system B. local review C. local interconnect network D. local power
Draw the influence lines for R A and the bar forces in members AD, EF, EM, and NM. Loads are transmitted into the truss through the lower chord panel points. Vertical members EN and GL are 18-ft long, FM is 16 ft.
