Practice Exam 2024 Actual Exam 2024
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The accuracy of a measuring instrument is linked to the U. S. National
standards by -ANSWER-Traceability
The measurement method by which dimensions of an object are
determined must either be validated by the laboratory or -ANSWER-
Published as a standard, in a technical journal, or by the manufacturer
The weight stack on a piston gage is set spinning to make sure that it
is -ANSWER-Floating freely
At what temperature do the Kelvin and Celsius scales indicate the
same numerical value? -ANSWER-There is no temperature at which
they indicate the same
Within the SI system, the radian and steradian are considered -
ANSWER-Supplemental units
How many microns are in a centimeter? -ANSWER-10000
Corrections for the local acceleration of gravity must be applied to -
ANSWER-Measurements from a piston gage
A technician is calibrating a handheld digital multimeter with AC and
DC ranges from 1 V to 1000 V. For the 1000 V AC range the written
procedure calls for applying 1000 VAC to the input terminals and
,recording the reading on the display. The calibrator available to the
technician has a maximum AC voltage output of 300 V. In this
situation -ANSWER-The technician can calibrate this range at 300 V
and mark the certificate and sticker "limited"
A technician in an accredited laboratory has calculated the density of
the air in order to support the determination of the air buoyancy of
stainless-steel masses. The technician uses the universal gas
constant and the formula PV = RT. An accreditation assessor cites a
deficiency for this approach because -ANSWER-Air is not an ideal gas
A current standard constructed from a current source, a shunt resistor,
and a voltmeter could be considered to be -ANSWER-A derived
standard
Building a manometer with tilted tube and scale -ANSWER-Increases
the resolution
For a calibration performed by NIST, the traceability statement on the
report will include the -ANSWER-Identification of the reference
standard used
The SI base unit called the mole represents -ANSWER-Amount of
substance
If a 100 watt light bulb is on for 8 hours, how many joules are
consumed? -ANSWER-2.9 MJ
The time interval of 3 days, 11 hours, 27 minutes, and 14.2 seconds is
properly expressed in SI units as -ANSWER-300.434 2 ks
, Corrections for error sources in low uncertainty measurements of
pressure using a piston gage would NOT include -ANSWER-A known
black body cavity emissivity
Ordinary (pure) water has a molecular weight of 18. This means that
18 g of water contains -ANSWER-Avogadro's number of molecules
A key element of traceability is -ANSWER-An unbroken chain of
comparisons
A lever arm with a weight on it is used in the calibration laboratory as -
ANSWER-A torque generating device
The most accurate method of measuring humidity is with -ANSWER-A
chilled mirror hygrometer
When calibrating a torque wrench or transducer, the technician should
be careful to always -ANSWER-Exercise the unit under test before
calibration
Hanging weights are best used when calibrating force measuring
devices -ANSWER-In tension only
The SI unit for mass is based on -ANSWER-A platinum artifact
maintained at Sevres, France
The correct symbol for the SI unit for time is -ANSWER-s
Using only the symbols for SI notation, what would be the outcome of
P x p -ANSWER-k