A variable-air-volume system changes the amount of air the fan delivers in order to:
A) Bypass the supply air. B) Keep the equipment operating at capacity.
C) Deliver the maximum air allowed by the fan. D) Match the zone requirements.
D
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It is possible to control a motor from as many places as there are stations using ____.
a. normally closed contacts b. the red pilot light c. a pushed closed contact d. the same magnetic controller
Technician A says that spark knock, ping, and detonation are different names for abnormal combustion Technician B says that any abnormal combustion raises the temperature and pressure inside the combustion chamber and can cause severe engine damage. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
Which of the following failures would NOT result in both the high- and low-side pressures to read too high?
a.damaged compressor b.large amount of air in the system c.overcharge of oil d.system overcharged
Vanish thread is also referred to as a partial thread, washout thread, or thread runout, and is that portion of the incomplete thread which is not fully formed at root or at crest and root.
Answer the following statement true (T) or false (F)