Which of the following is the first step in using a compressor to jump-start a truck that has an air starter?
A. start the disabled tractor's engine
B. fill the reservoir of the disabled tractor
C. hook up the air line from the compressor to the glad hand of the disabled truck's air reservoir
D. hook up the air line from one reservoir to the other
Answer: C
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One way of measuring the thermal conductivity of a material is to sandwich an electric thermofoil heater between two identical rectangular samples of the material and to heavily insulate the four outer edges, as shown in Fig. P1-56. Thermocouples attached to the inner and outer surfaces of the samples record the temperatures. During an experiment, two 0.5-cm-thick samples 10?cm × 10?cm in size are used. When steady operation is reached, the heater is observed to draw 25 W of electric power, and the temperature of each sample is observed to drop from 82°C at the inner surface to 74°C at the outer surface. Determine the thermal conductivity of the material at the average temperature.
What is a metal plate, or similar device, placed into the drain line of a cylindrical or cone-shaped vessel?
A) Baffle B) Mist eliminator C) Heat tracing D) Vortex breaker
There are _____ major causes of incomplete fusion in pipe welding.? ?
A. two? B. three? C. four? D. five?
Cotton insulation, available in unfaced batts, is made from over 80% post-industrial recycled denim waste with ____ that are similar to those used in textiles.
A. natural fibers B. flame retardants C. man-made fibers D. microfibers