Why are oil lifts needed in tall vertical refrigerant risers?
What will be an ideal response?
The oil lift will fill with oil. The refrigerant velocity through the trap will increase due to the reduced area for the gas to flow through. This increased velocity helps the vapor entrain the oil carry it up the riser.
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Which of the following steps should be completed when returning a storage tank to service?
A. Open roof drains on external floating roof tanks. B. Check to see that all manways are in place. C. Inspect for leaks by hydrotesting the tank. D. All of the above
Technician A says that circuits using semiconductors may also be known as solid state circuits. Technician B says that the process of introducing a precise amount of impurity to a pure semiconductor material is known as doping. Who is right?
A) Technician A B) Technician B C) Both technicians D) Neither technician
Using Ohm?s law, find V when the current I = 4.2 mA and R = 1.5 k?
What will be an ideal response?
A drawing template is a base drawing file prepared for a specific class or company that contains all of the typical settings normally required for a specific type of drawing.
Answer the following statement true (T) or false (F)