he main reliability-affecting environmental factors are: EMI and ESD Radiation, Lubricant age, High Altitude, Space Vacuum, Industrial Pollution, Electromagnetic pulse, Salt spray, Fungus, High intensity noise

8.a. When a machine is tested, the volume of cooling air is 1250 cfm. If the temperature of the entering air is 25 C and the temperature of the outgoing air is 35 C, the loss in the machine isA. 7.1 kw.B. 24.8 kw.C. 12.5 kw.D. 17.7 kw. 8.b. When a motor is tested with a prony brake, the scale reading is 3.50 lb. The length of the brake arm is12 in. and its weight is 0.50 lb. If the motor speed is 1700 rpm and the power input is 1050 watts, themotor efficiency isA. 80.5%B. 69%C. 75%.D. 64.5%.

Water melts as temp increases because : - chemical potential of the liquid is lower than that of gas - liquid and solid form eutectic mixture -chemical potential of the liquid and solid become equal

Each of the following statements describes a way of coping with temperature variation. Which scenario most likely includes positive heat transfer through convection? That is, in which scenario does Hconvection most likely have a positive (+) sign? Hanimal = +SR + IRin – IRout +/- Hconvection +/- Hconduction - Hevaporation + Hmetabolic Select one: a. A rabbit basking in the sun early in the morning. b. A lizard resting in the shade in a hot desert in the middle of the day. c. A bumblebee vibrating its flight muscles before flight. d. A ground squirrel hibernating in the winter. e. A bird fluffing its feathers on a cold day.