In order to leak test a low-pressure chiller, the chiller pressure:
A) Must be reduced to a safe level, under 150 psig.
B) Must be increased to a positive pressure less than 10 psig.
C) Must be recovered and replaced with nitrogen.
D) Should be increased by adding nitrogen.
B
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A self-contained meter installation refers to _____.
a. a single meter enclosure b. a multiple meter enclosure c. CT metering d. meter enclosures with a main disconnect
3/8 ยด 5/8 = __________.
Fill in the blank(s) with the appropriate word(s).
Contoured surfaces are machined with:
A) Stagger tooth cutters B) Helical plain milling cutters C) Form relieved cutters D) Contour saws
This type of oscillator uses an RC circuit and generates a waveform that is generally non-sinusoidal
A) sine wave generator B) relaxation oscillator C) triangle wave oscillator D) none of the above