The designation for a straight pipe thread used for a dryseal joint in soft or ductile material is:
A. NPSC
B. NPSM
C. NPAL
D. NPSF
E. NPSI
Answer: D
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Which of the following would you NOT expect to increase the total number of moles of C?
The reaction A + B ? C occurs in the vapor phase. It is an exothermic reaction. It is beneficial to carry out the reaction in the presence of liquid water, because C is somewhat soluble in water while A and B are effectively insoluble. The Henry’s Law constant for C in water increases as the temperature increases. We are interested in maximizing the total number of moles of C in the system, regardless of whether the C is in the liquid or vapor phase.
Which of the following is an indicator of a leaking refrigerant system?
A) Visible line bracing B) Front-seated system valves C) Higher-than-normal temperature readings D) Metal-to-metal contact points
If a pressure gauge on a compressed air tank reads 125 psi, assuming standard atmospheric pressure at sea level, what is the absolute pressure of air in
a. psi b. pascal c. feet of water d. feet of mercury
Technician "A" says that if you take a voltage reading from terminal "L1" to terminal "T1" on a contactor whose coil is energized, you should read zero volts. Technician "B" says that contactors can only have normally open contacts. Which of the following statements is correct?
A. Technician "A" is correct. Technician "B" is correct. B. Technician "A" is correct. Technician "B" is incorrect. C. Technician "A" is incorrect. Technician "B" is correct. D. Technician "A" is incorrect. Technician "B" is incorrect.