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Test Instruments 1

Total questions: 22

Worksheet time: 11mins

Name
Class
Date
1.

The ___ is a test instrument specifically designed to take current measurements on high voltage cables.

a)

Contact high voltage ammeter

b)

Non-contact high current voltmeter

c)

Non-contact high voltage ammeter

d)

Non-contact ultrasonic current probe

2.

A piezo verifier is used to ___

a)

Check high voltage detectors for proper operation

b)

Measure the RMS value of high voltages

c)

Detect the presence of high voltages

d)

Record the frequency of high voltage signals

3.

Which of the following test is preformed immediately after a piece of equipment has been installed, but prior to it being in service

a)

Acceptance

b)

After market

c)

Post production

d)

Quality assurance

4.

The braided metal jacket in a coaxial cable provided a high degree of protection against ___

a)

Electromagnetic interference

b)

High temperatures

c)

Low temperatures

d)

Moisture

5.

Screened twisted pair cables have a ___ shield between the conductors and the outer jacket.

a)

Braided

b)

Elastic

c)

Foil

d)

Non-conductive

6.

Fiber optic cables are used in communication circuits to transmit pulses of ___

a)

Bandwidth

b)

Light energy

c)

Radio frequencies

d)

Sound waves

7.

A satellite ___ meter is used to align a satellite receiving dish to the best position to receive the strongest signal.

a)

Attenuation

b)

Finding

c)

Receiving

d)

Reflection

8.

Improper phase sequence is a condition that will cause motor rotation to ___

a)

Reverse directions

b)

Single-phase

c)

Slow down

d)

Speed up

9.

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

a)

Continuity

b)

Insulation

c)

Leakage

d)

Verification

10.

A grounding system is designed to provide a ___ path to ground for fault currents

a)

High potential

b)

Low impedance

c)

Strong dielectric

d)

Surge resistant

11.

___ grade instruments are usually the most expensive

a)

Control

b)

Industrial

c)

Permanent

d)

Test

12.

When using test instruments to measure a process control parameter, such as temperature, you should___?

a)

Check and wear the required personal protective equipment

b)

Follow all electrical safety practices and procedures

c)

Follow all manufacture recommendations

d)

All the above

13.

A chip in a electrical system can best be described as a ___?

a)

Board

b)

Component

c)

Integrated circuit

d)

Module

14.

When troubleshooting you should consider that individual units are connected together to form___?

a)

Components

b)

Interfaces

c)

Modules

d)

Systems

15.

If a chip is found to be defective during troubleshooting it should be___?

a)

Recharged

b)

Reconnected

c)

Repaired

d)

Replaced

16.

___ is the order in which waveforms from each phase (ABC) cross zero.

a)

Current crest rotation

b)

Harmonic degree

c)

Harmonic sequence

d)

Phaser rotation

17.

Zero sequence harmonics do not produce a rotation field in either direction

a)

True

b)

False

18.

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

a)

Adjustment line

b)

Circuit breaker

c)

Coil tap

d)

Neutral line

19.

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

a)

Impedance

b)

Current

c)

Reluctance

d)

Inrush

20.

The ___ is the current flow through individual windings

a)

Line current

b)

Line voltage

c)

Winding current

d)

Winding voltage

21.

Magnetic force is used to rotate the coils in a generator

a)

True

b)

False

22.

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.

a)

Harmonics filter

b)

Harmonics mitigating transformer

c)

K rated transformer

d)

Phase shifting transformer