Why should disc brake drag be avoided?
What will be an ideal response?
Brake drag increases pad and rotor wear and creates friction that the engine has to overcome, wasting fuel. Heat buildup in brakes will warp the rotors and drum, and may overheat the wheel bearing grease.
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Which statement is true about refrigerant cooling coils?
A) Control is achieved by a valve on the discharge of the coil. B) Refrigerant changes from liquid to gas in the coil. C) Face velocity can be high since refrigerant coils operate dry. D) Refrigerant changes from gas to liquid in the coil.
What is the portion of genotype that is unique to each generation?
A. Non additive value B. Breeding value
If the purge unit on a chiller is operating very frequently, the system may have a leak.
Answer the following statement true (T) or false (F)
Ferrous metals contain ____.
A. iron B. copper C. aluminum D. both a and c E. all of the above