Test instruments test review
A conductor w an operating voltage of 3000v should have a minimum total resistance of approx __?__ ohms
3 million
An essential part of trouble shooting by knowledge and experience is __?__
Applying info acquired from past malfunctions
The cable pairs in copper communication are twisted at different rates to prevent __?__
Cross talk
Insulation resistance will typically __?__
Decrease
A light meter is a test instrument that measures the quantity of light in lumens or __?__
Foot candles
A __?__ is a test instrument to give a visual representation of voltage fluctuations
Hand held oscilloscope
High voltage test probes shouldn't be used to take measurements in circuits that have __?__
High currents
__?__ grade test instruments are usually the most expensive
Industrial
Megoneters are also known as __?__ testers
Insulation
The manufacturer procedures for trouble shooting are typically __?__ than the plant procedures
More general
__?__ is a test instrument designed to take current measurement on a high voltage cable
Non contact high volt meter
Harmonies are cause by __?__
Non linear loads
__?__ will cause a 3 phase motor to operate above the name plate rating
Phase unbalance
Light is the portion of the electromagnet spectrum that produces __?__ energy
Radiant
Attenuation in a fiber optic cable is produced by __?__ of light at splices/connectors in the cable
Reflection
Which color of light has the shortest wave length?
Violet
A grounding system is designed to provide a __?__ path to ground for fault currents
Low impedance
__?__ lamps produce more light per watt than any other light
Low pressure sodium
