Basic circuit troubleshooting

Question 1

what’s the most versatile electrical measuring instrument used by aircraft technicians

Answer 1

a multimeter

Question 2

what’s used to find a circuit problem with power on the circuit

Answer 2

a volt meter

Question 3

what’s used to find a circuit problem with power on the circuit

Answer 3

ammeter
millimeters and micro ammeters measure very small rates of current flow

Question 4

what measures and displays voltage (AC peak-to-peak values) in waveforms (output) of a wave generating circuit

Answer 4

oscilloscope

Question 5

what’s used to find a circuit problem when power is removed from the circuit

Answer 5

an ohmmeter

Question 6

what is the continuity check/test

Answer 6

checks for the existence of a complete electrical system between 2 points
a volt/ohm meter is used most of the time

Question 7

how do you isolate the problem

Answer 7

make sure everything is being operated properly.
see if the problem is worse during operation.
does the weather affect it.

Question 8

use of troubleshooting charts

Answer 8

Solve the malfunction problem, if possible, by locating the possible cause,
following the isolation procedure, and making the correction (s) as shown on a
troubleshooting chart

Question 9

check manufacture info

Answer 9

Find information on components or systems in manufacturer’s installation and
operations manuals or on their Website

Question 10

perform operational checks on components or system

Answer 10

Locate the fault through checks using a multimeter, oscilloscope, or other
appropriate testing instruments or methods

Question 11

what’s the most common problems encountered while troubleshooting circuits

Answer 11

open resistors or contacts
shorts between conductors