TPC Electrical Measuring Instruments UPDATED Exam Questions and CORRECT Answers

TPC Electrical Measuring Instruments
UPDATED Exam Questions and
CORRECT Answers
If an oscilloscope does not have a free-running sweep, it will have a(n) sweep. - CORRECT
ANSWER - 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. - CORRECT ANSWER - nonlinear


The process of filling in the missing parts of a measured wave between sample points on an
oscilloscope

is called - CORRECT ANSWER - interpolation


Slope and trigger controls give you precise control over exactly where on the waveform you
want the

screen display to - CORRECT ANSWER - begin



An attenuating probe is used to minimize the effects of - CORRECT ANSWER - circuit
loading


Circuit resistance is measured by a(n) - CORRECT ANSWER - ohmmeter


Because resistance readings must be taken with the system power off, every ohmmeter must
carry its

own - CORRECT ANSWER - battery supply


To test the condition of the insulation on motor windings, use a(n) - CORRECT
ANSWER - megohmmeter