The automatic control of process operations is performed by __________.
A. open-loop systems
B. closed-loop systems
C. both a and b
Answer: C
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Assume an insulated vessel has a circumference of 62' (18.9 m) and a tan-tan height of 33'– 9" (10.3 m). There will be 8 sections per course with 3" (8 cm) overlaps at the seams. Estimate the total number of 48" (1.22 m) roll jacket sections needed to cover the sidewall.
a. 32 b. 48 c. 72 d. 96
Technician A says that the accumulator should only be charged with nitrogen. Technician B says that before performing any service on brake systems that utilize an accumulator the accumulator must first be discharged. Who is correct?
A. Technician A B. Technician B C. Both D. Neither
Where is sensor 1, bank 1 located on a V-type engine?
A) On the same bank where number 1 cylinder is located B) In the exhaust manifold C) On the bank opposite cylinder number 1 D) Both A and B
For an evaporator coil to transfer the maximum amount of heat, _____
a. the fin spacing should be very wide b. all of the surface area inside the tubes needs to be covered in flashing liquid c. the coil temperature should always be higher than the dew point of the air d. the subcooling of the entering refrigerant should be kept to a minimum