What must be done when charging a system that contains a near-azeotropic refrigerant?
a. Charging with refrigerant vapor only.
b. Charging with liquid refrigerant.
c. Charging by subcooling.
d. Charging by weight only.
b
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In Figure 17-8, explain why Pi-300B is reading 19 psig.
What will be an ideal response?
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As a consumer's income rises, the proportion of income spent on food falls. This assertion is known as
A) Law of Diminishing Marginal Utility. B) Engel's Law. C) Law of Demand. D) None of the above
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A drip-proof motor is designed to prevent any lubricating oil from leaving any of the bearings.
Answer the following statement true (T) or false (F)
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A summing amplifier with weighted input values is called a(n)
A) integrator B) scaling adder C) subtractor D) n-input adder
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