Standard wyes and tees are not used in VRF refrigeration networks as they introduce turbulence and do not ensure even flow to both branches
Indicate whether the statement is true or false
TRUE
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A good reading for a cylinder leakage test would be ________
A) All cylinders above 70% leakage and within 7% of each other B) Within 20% leakage between cylinders C) All cylinders above 20% leakage D) All cylinders below 20% leakage
The term ____________________ refers to the breakdown of a substance from the energy of the sun
Fill in the blank(s) with correct word
An engineer must decide between two ways to pump concrete to the top of a seven-story building. Plan 1 requires the leasing of equipment for $60,000 initially and will cost between $0.40 and $0.95 per metric ton to operate, with a most likely cost of $0.50 per metric ton. The pumper is able to deliver 100 metric tons per 8-hour day. If leased, the asset will have a contract period of 5 years. Plan 2 is rental option that will cost $15,000 per year. In addition, an extra $15 per hour labor cost will be incurred for operating the rented equipment per 8-hour day. Which plan should the engineer recommend if the equipment will be needed for 50 days per year? The MARR is 12% per year.
What will be an ideal response?
Technician A says that an electronic throttle control uses a stepper motor. Technician B says that an electronic throttle control uses a vacuum controlled module to keep the throttle at a 16%-20% throttle opening. Who is right?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B