Chapter 4

Question 1

define structure to electrolyte potential

Answer 1

The potential difference between the surface of a buried or submerged metallic structure and the electrolyte that is measured with reference to an electrode in contact with the electrolyte.

Question 2

to minimize IR drop the reference electrode should be placed________

Answer 2

as close to the structure as possible.

Question 3

__________ are computerized instruments by which data is taken by an integrated meter such as a voltmeter an the reading is then stored in a memory

Answer 3

data logger

Question 4

shunts

Answer 4

used as a method of calculating current by measuring the voltage drop across a known resistance and calculating the current.

Question 5

A functioning diode will typically display a voltage from

_______ to _______ in the forward bias and ______ in the verse bias.

Answer 5

0.3 V to 0.9V and OL

Question 6

for shorted diodes the meter will display

Answer 6

low voltage at both ends

Question 7

For open circuit diodes the meter will display ____ at both ends.

Answer 7

OL