WorksheetsTest Instruments 1
Total questions: 22
Worksheet time: 11mins
The ___ is a test instrument specifically designed to take current measurements on high voltage cables.
Contact high voltage ammeter
Non-contact high current voltmeter
Non-contact high voltage ammeter
Non-contact ultrasonic current probe
A piezo verifier is used to ___
Check high voltage detectors for proper operation
Measure the RMS value of high voltages
Detect the presence of high voltages
Record the frequency of high voltage signals
Which of the following test is preformed immediately after a piece of equipment has been installed, but prior to it being in service
Acceptance
After market
Post production
Quality assurance
The braided metal jacket in a coaxial cable provided a high degree of protection against ___
Electromagnetic interference
High temperatures
Low temperatures
Moisture
Screened twisted pair cables have a ___ shield between the conductors and the outer jacket.
Braided
Elastic
Foil
Non-conductive
Fiber optic cables are used in communication circuits to transmit pulses of ___
Bandwidth
Light energy
Radio frequencies
Sound waves
A satellite ___ meter is used to align a satellite receiving dish to the best position to receive the strongest signal.
Attenuation
Finding
Receiving
Reflection
Improper phase sequence is a condition that will cause motor rotation to ___
Reverse directions
Single-phase
Slow down
Speed up
A ground ___ test is used to verify that a low resistance path exists between the ground conductor and all exposed conductive metal parts of a device
Continuity
Insulation
Leakage
Verification
A grounding system is designed to provide a ___ path to ground for fault currents
High potential
Low impedance
Strong dielectric
Surge resistant
___ grade instruments are usually the most expensive
Control
Industrial
Permanent
Test
When using test instruments to measure a process control parameter, such as temperature, you should___?
Check and wear the required personal protective equipment
Follow all electrical safety practices and procedures
Follow all manufacture recommendations
All the above
A chip in a electrical system can best be described as a ___?
Board
Component
Integrated circuit
Module
When troubleshooting you should consider that individual units are connected together to form___?
Components
Interfaces
Modules
Systems
If a chip is found to be defective during troubleshooting it should be___?
Recharged
Reconnected
Repaired
Replaced
___ is the order in which waveforms from each phase (ABC) cross zero.
Current crest rotation
Harmonic degree
Harmonic sequence
Phaser rotation
Zero sequence harmonics do not produce a rotation field in either direction
True
False
A ___ is an extra electrical connection on a transformer coil that allows a varying number of turns of a coil to be part of the circuit
Adjustment line
Circuit breaker
Coil tap
Neutral line
The closed, laminated core gives a path of low ___ for the flux to flow; this aligns the flux and allows the maximum number of conductors to be cut
Impedance
Current
Reluctance
Inrush
The ___ is the current flow through individual windings
Line current
Line voltage
Winding current
Winding voltage
Magnetic force is used to rotate the coils in a generator
True
False
The primary function of a 3-phase ___ is to reduce the fifth and seventh harmonic currents generated by six-pulse converters that change AC to DC.
Harmonics filter
Harmonics mitigating transformer
K rated transformer
Phase shifting transformer
