SM0486
d.
maintain the mercury at a constant viscosity.
9.
You obtain a resistance reading from the Mueller bridge of 26.111 ohms, the
temperature is approximately
5.5 F.
5.5 C.
a.
c.
.5 C.
55 C.
b.
d.
10.
What statement is true when calibrating an alcohol-in-glass thermometer?
a.
Reduce the temperature of the calibrator so the alcohol freezes before
taking the first reading.
b.
Insure that the thermometer is within the range of the calibrator.
c.
Alcohol-in-glass thermometers are not as accurate as mercury-in-glass
thermometers.
d.
Exercise caution when approaching the boiling point of alcohol.
11.
A synthetic nonflammable oil is used with the thermometer calibrator to
a.
prevent corrosion of the mercury contacts.
b.
act as a media for heat transfer.
c.
lubricate the thermometer calibrator.
d.
protect the heating unit.
12.
You are making a thermocouple temperature measurement and obtain a reading of
5.790 millivolts from the potentiometer. What is the value of temperature?
655 K.
654 K.
a.
c.
654 C.
655 C.
b.
d.
13.
Measurement with an optical pyrometer consists of
a.
comparing the illumination of the standard source to that of the hot
body.
b.
determining the difference between the hot and cold junctions.
c.
reading the millivolt output of the cold junction.
d.
thermoelectric and optical computations.
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