Gross profit is calculated by taking _____________
A) Sales minus all expenses B) Sales minus direct cost
C) Sales minus rent D) Sales minus all fixed expenses
B
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Saturated liquid R-134a at 120 psia enters a throttling valve. The R-134a exits the throttling valve at a pressure of 30 psia. Assume that there is no change in velocity.
(a) Determine the exit quality of the R-134a. (b) Using your model of a throttling device, determine the exit quality of the R-134a for exit pressures ranging from 20 psia to 100 psia. Given: P1 = 120 psia; x1 = 0 (saturated liquid); P2 = 30 psia R-134a (Take State 1 as the inlet, State 2 as the outlet.) Assume: Q?=W?=0. For a throttling valve, assume steady-state, steady-flow, single-inlet, single-outlet flow, with ?KE = ?PE = 0 What will be an ideal response?
A corner finisher operates on the same principle as a flat finisher or nail spotter, but its dispensing surface has an angle of _____.
a. 30 degrees b. 45 degrees c. 90 degrees d. 120 degrees
It has been determined that the source of audible noise for a radio is due to the power supply voltage. How can an inductor be configured to eliminate this noise?
A) Connect the inductor in series with the radio power wire. B) An inductor will not affect the noise. C) Connect the inductor in parallel with the radio. D) both B and C
Which of the following is an incorrect statement?
A) A CFC or HCFC refrigerant recovered from a system can be returned to the same system. B) When opening a sealed system, CFC or HCFC refrigerant must be recovered and stored in approved containers. C) Anyone releasing CFC or HCFC refrigerants to the atmosphere is subject to fines and the possibility of a jail term. D) CFC or HCFC refrigerant recovered from one system can be used in another system, regardless of system ownership.