Technician A says that it is acceptable to check for hydraulic leaks with your hand as long as you are wearing heavy gloves. Technician B says that if there is any physical damage to the accumulator it must be replaced immediately. Who is correct?
A. Technician A
B. Technician B
C. Both
D. Neither
Answer: B
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A) Find ?H and ?S for the gas as it travels through the compressor, and also find the amount of work Ws done by the compressor per mole of gas. B) The gas leaving the compressor is then condensed, after which it goes through a throttling valve that drops the pressure back to 0.3 atm, and then returns to the boiler. Find the amount of heat removed in the condenser (QH) per mole of refrigerant and the coefficient of performance of this refrigerator. C) What would be the coefficient of performance of a CARNOT refrigerator that operated between 275 K and 330 K?
A refrigerator operates according to the vapor-compression cycle. The amount of heat added in the boiler is 6500 Joules per mole of refrigerant. The vapor leaving the boiler is an ideal gas with a constant CV*=(5/2)R. This gas enters the compressor at P=0.3 atm and T=275 K and leaves at P=0.5 atm and T=330 K.
In a triangle, angle A is 30 degrees less than one-half the sum of angle B and angle C. Angle B is equal to angle C. The sum of the three angles of a triangle equals 180°. Find angle A.
Fill in the blank(s) with the appropriate word(s).
A space of ____ inch is usually allowed between the object and the beginning of the extension line.
A. 1/4 B. 1/8 C. 1/16 D. 1/32
Discuss the difference between custom and modular cabinets:
What will be an ideal response?