TPC Electrical Measuring Instruments
Exam Questions and Answers 100%
Pass
If an oscilloscope does not have a free-running sweep, it will have a(n) sweep. -
✔✔Triggered
Strong harmonics of the original sine wave frequency of 60 Hz can appear in an ac
power line. They are
usually caused by ____________ loads. - ✔✔nonlinear
The process of filling in the missing parts of a measured wave between sample points
on an oscilloscope
is called - ✔✔interpolation
Slope and trigger controls give you precise control over exactly where on the waveform
you want the
screen display to - ✔✔begin
An attenuating probe is used to minimize the effects of - ✔✔circuit loading
Brittie Donald, All Rights Reserved © 2025 1
, Circuit resistance is measured by a(n) - ✔✔ohmmeter
Because resistance readings must be taken with the system power off, every ohmmeter
must carry its
own - ✔✔battery supply
To test the condition of the insulation on motor windings, use a(n) - ✔✔megohmmeter
When you need to measure very small resistances, use a ____________ ohmmeter.
When you need to
measure larger resistances, in the range of several kilo-ohms, use a series ohmmeter. -
✔✔shunt
A shorted capacitor will exhibit ____________ resistance when tested with a
megohmmeter. - ✔✔little or no
Graphical multimeters can perform functions that standard digital multimeters cannot,
such as - ✔✔displaying transients
Using a GMM in the TREND mode allows you to - ✔✔monitor line voltage for sags and
surges
When using a multimeter to measure voltage, what should you do after turning on the
device and turning
the range selector to its highest voltage? - ✔✔Check the meter on a known source
Brittie Donald, All Rights Reserved © 2025 2
Exam Questions and Answers 100%
Pass
If an oscilloscope does not have a free-running sweep, it will have a(n) sweep. -
✔✔Triggered
Strong harmonics of the original sine wave frequency of 60 Hz can appear in an ac
power line. They are
usually caused by ____________ loads. - ✔✔nonlinear
The process of filling in the missing parts of a measured wave between sample points
on an oscilloscope
is called - ✔✔interpolation
Slope and trigger controls give you precise control over exactly where on the waveform
you want the
screen display to - ✔✔begin
An attenuating probe is used to minimize the effects of - ✔✔circuit loading
Brittie Donald, All Rights Reserved © 2025 1
, Circuit resistance is measured by a(n) - ✔✔ohmmeter
Because resistance readings must be taken with the system power off, every ohmmeter
must carry its
own - ✔✔battery supply
To test the condition of the insulation on motor windings, use a(n) - ✔✔megohmmeter
When you need to measure very small resistances, use a ____________ ohmmeter.
When you need to
measure larger resistances, in the range of several kilo-ohms, use a series ohmmeter. -
✔✔shunt
A shorted capacitor will exhibit ____________ resistance when tested with a
megohmmeter. - ✔✔little or no
Graphical multimeters can perform functions that standard digital multimeters cannot,
such as - ✔✔displaying transients
Using a GMM in the TREND mode allows you to - ✔✔monitor line voltage for sags and
surges
When using a multimeter to measure voltage, what should you do after turning on the
device and turning
the range selector to its highest voltage? - ✔✔Check the meter on a known source
Brittie Donald, All Rights Reserved © 2025 2
