When leak testing a low pressure chiller, the pressure should not be allowed to exceed 10 psig
A) to avoid freezing the chiller bundle
B) to avoid causing high compressor current draw
C) to avoid opening the high pressure cutout and shutting the system down
D) to avoid breaking the rupture disk and losing the refrigerant charge
D
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?How is a welding tip seal checked for a leak?
A. ?Place your finger over the end of the tip and spray the fitting with a leak detector. B. ?Once the tip is tight, use a wrench to make ½ additional turn. C. ?Put the cutting head in the cooling tank and look for bubbles. D. ?Clean the fitting with a dry clean rag, and tighten the fitting with a 12 in. adjustable wrench.
__________________________________________ are designed to inform a worker of a material’s physical properties, its effects on health, the proper type and style of protective equipment needed when using the material, and the proper first aid treatment to be given when exposed to the material.
Fill in the blank(s) with the appropriate word(s).
Automatic parking brake releases ________
A) Use an electric solenoid B) Use a vacuum servo C) Either A or B D) Neither A nor B
For a certain group of items, the cost of carrying inventory and the cost of placing orders is not exactly known but is about the same for all the items. The company has calculated K = 20 for these items. If one item has an annual demand (
A) = $10,000 the NEW order quantity should be: A) $10,000. B) $20,000. C) $50,000. D) $2,000. E) none of the above