When connecting gauges to an already installed and operating unit with split-system installation valves, the installation valves should be:
A) Frontseated to allow the gauges to read the system pressures.
B) Backseated as tightly as possible to prevent refrigerant from escaping.
C) Left alone.
D) Moved to the mid position to allow the gauges to read the system pressures.
C
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The wire feed speed is generally recommended by the electrode manufacturer and is selected in ____.
A. inches per second (ips) B. revolutions per minute (rpm) C. inches per minute (ipm) D. impulses per second (ips)
What is the Pythagorean theorem formula?
a. a2 + b2 = c2 b. a2 × b2 = c2 c. a2 + b2 = c d. a2 × b2 = c
Find the exponential Fourier series for the function in Fig. 17.81.
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When sizing a compressor for a refrigeration application, the compressor is rated by: (TECH TIP)
A) The amount of refrigerant in cubic feet the compressor can move. B) The amount of time in which the compressor can move a pound of refrigerant through the evaporator. C) The number of pounds of refrigerant the compressor pumps per hour. D) The size of the refrigerated space.