Technician A says that a compressor receives low pressure liquid refrigerant and discharges high pressure gas. Technician B says that an orifice tube or TXV separates the high pressure and low pressure sections of an A/C circuit. Who is correct?
A. Technician A only
B. Technician B only
C. Both A and B
D. Neither A nor B
Answer: B
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Two membrane systems are under consideration for treating cooling tower blowdown to reduce its volume. A low-pressure seawater reverse osmosis (SWRO) system will operate at 500 psi and produce 720,000 gallons of permeate per day. It will have a fixed cost of $465 per day and an operating cost of $485 per day. A higher-pressure SWRO system operating at 800 psi will produce 950,000 gallons per day at a cost of $1280 per day. The fixed cost of the high-pressure SWRO system will be only $328 per day because fewer membranes will be required. How many gallons of blowdown water will require treatment each day for the two systems to break even?
What will be an ideal response?
If the frequency output of a MAF is plotted on a graph along with engine RPM the resulting lines should be ________
A) A parabola B) A straight line C) A sharp curve D) In opposite directions
When troubleshooting a hydronic heating system, the technician notices that the circulator pump is running and the burner is firing, but no hot water is flowing through the system. What is the most likely problem?
A. defective circulator pump B. defective room thermostat C. air in the system D. high limit open
Utility size wind turbine blades are only produced through a polymer extrusion process.
Answer the following statement true (T) or false (F)