Which of the following is NOT true of an extended life coolant (ELC)?
a.improves cavitation protection
b.no inhibitor testing required
c.lasts for up to six years
d.never has to be inspected
d.never has to be inspected
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List the significant contributions of John Dewey.
What will be an ideal response?
Technician A uses a face shield when using any type of pressure or chemical cleaning. Technician B uses protective gloves when working with solvents. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians A and B D) Neither technician A nor B
The side walls of a refrigerator are made from two thin layers of sheet metal, each 1/8 in. thick, and with thermal conductivity of k = 42 Btu/h·ft·°F , and a 2-in foam insulation with k = 0.027 Btu/h·ft·°F . If the inside and outside surface temperatures of the refrigerator wall are 35 ºF and 70 ºF, respectively, calculate the heat loss through an area of 8 ft^2.
What will be an ideal response?
Answer the following statement(s) true (T) or false (F)
1. Many digital ohmmeters measure the value of a resistor by passing a known amount of current through it and then measuring the voltage drop across the resistor. 2. Analog sensing devices are sensors that are designed to operate between some range of settings. 3. Long runs of wire have the effect of reducing resistance to the lines. 4. A current generator can be constructed using either a field effect transistor or a junction transistor. 5. A pnp junction transistor cannot be used to construct a current generator.