Rred ASE 5 Brakes - (Gimer - 78CD44) on 3
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Tech A says that many brake drums usually start with 0.060 (1.524 mm) to work with when calculating if you can
machine the brake drum. Tech B says that many brake drums usually start with 0.030 (0.762 mm) to work with when
calculating if you can machine the brake drum. Who is correct?

In the winter, in order to keep the classroom steadily at 68 f before 10 pm, heating with an average rate of 42,000 btu/hr is provided. assume the outdoor temperature maintains at 32°f, determine the electrical power (kw) required to (a) operate a reversible heat pump (b) operate a real heat pump with a cop (7) of 4.5 and (c) operate an electrical-resistance heater.