In the final stages of commissioning, the loop control is run in _____
A) automatic B) I/P C) manual D) P/I
A
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An advantage of dip-coating is ____. ?
A. ?relatively inexpensive equipment is used B. ?primers are not needed C. ?there is a long pot life D. ?coating thickness is easy to control
Machining symbols show where material is to be removed.
Answer the following statement true (T) or false (F)
Which of these are symptoms of carbon build-up on the throttle plates?
A) Rough idle B) Surging at idle C) Stalling D) All of these are correct.
Why are thermostatic expansion valves often used as the outdoor metering device for the heating cycle?
A) TEVs can be adjusted in the field to match the heat pump's performance with the climate it will be operating in. B) TEVs are easier to install on the outdoor coil. C) TEVs allow the system pressures to equalize in the off cycle, allowing the use of low starting torque compressors. D) The TEV can modulate the refrigerant flow over the wide range of temperatures experienced in the heating mode.