Navedtra 14188, Neets Module 16

Front 1

What system is currently used by US military services to identify electronic equipment with standardized nomenclature?

Back 1

Joint Electronic Type Designation (JETDS)

Front 2

Which of the following categories of test equipment is designed to test, without modification, a range of electronic parameteres neede for two or more systems that are different in design?

Back 2

GPETE

Front 3

For what purpose was the ETE classification board established?

Back 3

To control the increase of nonstandard GPETE

Front 4

Which system provides an inventory of test equipment actually located in the fleet?

Back 4

SCLSIS

Front 5

You can determine if a piece of test equipment has been calibrated by checking which document?

Back 5

a tag or label attached to the instrument

Front 6

What label is used to identify a test instrument that is within tolerance on all parameters?

Back 6

CALIBRATED

Front 7

Under what circumstances should the USER CALIBRATION label be affixed to a piece of test equipment?

Back 7

When user calibration is required before, during, or after use.

Front 8

Which of the following statements must appear on the CALIBRATION NOT REQUIRED label affixed to an instrument?

Back 8

By what authority the label was affixed

Front 9

Which of the following labels is attached to an unusable instrument, and may have an additional tag attached?

Back 9

REJECTED

Front 10

A test instrument that has plug-in modules and/or easily accessible potentiometer or controls which affect the calibration of the instrument should have which label attatched?

Back 10

CALIBRATION VOID IF SEAL BROKEN

Front 11

When maintenance personnel are not authorized to make repairs to a piece of test equipment, what items, if any, must be sent to the calibration repair facility with the equipment?

Back 11

All the accessories

Front 12

In what type of environment should test equipment be stowed?

Back 12

Dry

Front 13

In a stowage space aboard ship, what devices should be used to hold the test equipment in place?

Back 13

Stretch seat-belt-type straps

Front 14

What stystem is used to provide for a standardized recall and scheduling of test equipment into calibration facilities?

Back 14

MEASURE

Front 15

Which of the following actions would be classified as preventative maintenance?

Back 15

Purchasing a new piece of test equipment

Front 16

Which of the following actions would be regarded as part of corrective maintenance?

Back 16

Alignment of a servo assembly after a repair

Front 17

The initial operating conditions of newly installed equipment are referred to as

Back 17

Baseline Operating Characteristics

Front 18

When working on energized equipment, you should follow which of the following practices?

Back 18

Insulate yourself from ground

Front 19

When measuring 300 volts or more, you should first take what step?

Back 19

Turn off equipment power

Front 20

Prior to working on a circuit, you use a shorting probe to discharge which of the following types of components?

Back 20

Capacitors and cathode-ray tubes

Front 21

If a 28 Volt 6 ampere fuse blows, the proper procedure is to replace it with which of the following devices?

Back 21

A fuse of the same voltage and current rating

Front 22

After work on equipment is complete, who shoudl remove any attached tags?

Back 22

The person who signed the attached the tag

Front 23

What is the purpose of the grounding cable attached to the frame of a generator aboard ship?

Back 23

Ensure equipment is at same ground potential as the ship

Front 24

Which of the following steps should you take to help ensure that metal-case test equipments are safe to use?

Back 24

Insulate the metal case from ground

Front 25

This measurement is rarely taken in preventitive or corrective maintenance or testing because unsoldering is usually required. Ohm's law is normally applied to determine this value

Back 25

Current

Front 26

This is a valuable aid in locating faults during corrective maintenance, but cannot be made with power applied. Many technical manuals contain charts that indicate the test points ofr this measurement.

Back 26

Resistance

Front 27

This measurement provides an indication of dielectric strength and is used to determine the power factor.

Back 27

Capacitance

Front 28

This measurement is seldom taken during troubleshooting. It can be taken using a bridge or another instrument that is primarily designed to measure another quantity; however, a conversion chart is required.

Back 28

Inductance

Front 29

The Wheatstone bridge can be used for precision measurements of which of the following quantities?

Back 29

Resistance

Front 30

DC power is stated in which of the following units?

Back 30

Watts

Front 31

The bel is a unit of measurement used with voltage, current, or power that compares which of the following circuit values?

Back 31

The input to the output

Front 32

What is the relationship between the values of the bel and the decibel?

Back 32

The decibel is 1/10 the bel

Front 33

A thermocouple ammeter is used to measure which of the following quantities?

Back 33

RF current

Front 34

To measure shaft rotation rate on an engine, you should use, which if any, of the following instruments?

Back 34

A Tachometer

Front 35

In the centrifugal tachometer, what compenent restricts the action on the lower collar that is produced by centrifugal force?

Back 35

The pointer

Front 36

What is the usual speed range (in feet per minute) of a chronometric tachometer?

Back 36

0-3000

Front 37

The flashing rate of a strobatac is controlled by which of the the following circuits?

Back 37

An electronic pulse generator

Front 38

The flashing rate of the strobotron tube affects its life expectancy. What is the range in hours of life expectancy of the strobotron tube?

Back 38

100-250

Front 39

When using the vibrating-reed frequency meter, you take the reading in which of the following ways?

Back 39

Read the reed that vibrates the most

Front 40

For which of the following purposes is a cathode-ray oscilloscope used?

Back 40

To visually analyze waveforms

Front 41

An oscilloscope measures voltage and displays waveforms. It can be used to measure currents, temperatures, speeds, and accelerations if they are first converted to to _______.

Back 41

Voltages

Front 42

When troubleshooting transistorized circuits, you should first check the condition of which of the following circuits?

Back 42

Power supplies

Front 43

Which of the following instruments is used to check transistors for collector leakage current and current gain?

Back 43

Semiconductor test set

Front 44

When making base-to-emitter bias voltage checks on a transistor, you should read which of the following voltage ranges?

Back 44

5-20 microvolts

Front 45

When making resistance measurements on a transistor with an ohmeter, you should allow what maximum current in the transistor?

Back 45

Milliampere

Front 46

What are the two basic components of a galvanometer?

Back 46

A stationary permanent magnet and a movable coil

Front 47

The phosphor bronze ribbon in the galvanometer serves teh same purpose as what component in the D'Arsonval meter?

Back 47

Hairspring

Front 48

The direction in which the D'Arsonval meter pointer deflects depends on what characteristic of the current applied to the coil?

Back 48

Amplitude

Front 49

The D'Arsonval meter movement is damped to prevent which of the following conditions?

Back 49

Oscillating readings

Front 50

The weight of the rotating coil assembly and the type of bearings used in the D'Arsonval meter are factors that affect which of the following characteristics of the meter?

Back 50

The sensitivity

Front 51

For a meter to read linearly, its face is divided into equal segments. What meter feature makes this possible?

Back 51

The curved poles of the permanent magnet

Front 52

What is the purpose of a shunt in a dc ammeter?

Back 52

To increase the current range of the meter

Front 53

Meter sensitivity is determined by the amount of current required by the ammeter coil to provide full-scale deflection of the pointer. An ammeter coil requiring which of the following current values provides the greatest sensitivity?

Back 53

500 microamperes

Front 54

In a voltmeter, the D'Arsonval metere movement is caused to move by what electrical action?

Back 54

Current

Front 55

In a voltmeter, the meter scale is calibrated in which of the following categories?

Back 55

Voltage

Front 56

To figure the total value of series resistance needed to extend the range of a voltmeter, you need to know the value of current to cause full-scale deflection of the meter and what other value?

Back 56

Maximum applied current

Front 57

Your voltmeter has four ranges: 1V, 10V, 100V, and 1,000V. To measure an unkown voltage in an amplifier, you should first select what range?

Back 57

1000V

Front 58

Whicyh of the following types of circuits are most affected by the loading effect of voltmeters?

Back 58

High-resistance

Front 59

A voltmeter with a 10-microampere meter movement has a sensitivity of how many maximum ohms per volt?

Back 59

1000

Front 60

A megger is widely used for which of the following purposes?

Back 60

To measure insulation resistance

Front 61

Before you can take an accurate resistance measurement with an ohmmeter, what meter adjustement must you complete?

Back 61

Zero resistance

Front 62

Which of the following locations on the meter scale provides the most accurate reading for resistance?

Back 62

Near the center of the scale

Front 63

An ordinary ohmmeter is unsuitable for measuring insulation resistance for which of the following reasons?

Back 63

Insulation resistance values are too great for an ohmmeter to measure

Front 64

A megger uses high voltage to check the insulation leakage in the megohm range. What is the source of this voltage?

Back 64

A hand-driven dc generator

Front 65

Meggers with which of the following maximum voltage ratings are commonly found in the fleet?

Back 65

500 volts

Front 66

A megger is prevented from exceeding its rated output voltage by which of the following actions?

Back 66

friction clutch slippage

Front 67

The galvanometer-type meter movement differes from the electrodyamometer meter movement in that the electrodyammoter type uses which of the following components to produce the magnetic field?

Back 67

Two sets of coils

Front 68

A continuity test is performed on a piece of elctronic equipment to discover what kind of fault?

Back 68

Open circuits

Front 69

Which of the following meters is recommended for circuit continuity tests?

Back 69

An ohmmeter

Front 70

When preparing to use an ohmmeter to test a circuit for grounds, you should first take which of the following actions?

Back 70

Disconnect all intentional grounds

Front 71

It is important to set a voltmeter on its highest range scale before taking a measurement for which of the following reasons?

Back 71

To protect the meter from damage

Front 72

In what arrangement is an ammeter connected to a circuit?

Back 72

In series

Front 73

When you are measuring voltage using a voltmeter, where should you stand to view the meter reading?

Back 73

Directly infront of the meter

Front 74

On an ohmmeter, which of the following switches allows selection of ac or dc readings?

Back 74

FUNCTION

Front 75

The power required to operate a basic ohmmeter comes from whcih of the following sources?

Back 75

Batteries

Front 76

The function of the ZERO OHM control on a multimeter is to compensate for which of the following conditions?

Back 76

Meter battery aging

Front 77

When measuring unkown currents, you should determine the range scale that is appropriate in what way?

Back 77

Start with the highest scale and work down

Front 78

Digital multimeters can be divided into three functional sections:
1.) signal conditioning
2.) analog-to-digital
and what is the 3) section?

Back 78

Display

Front 79

In a differential voltmeter, an adjustable reference voltage can be produced in increments as small as how many microvolts?

Back 79

10

Front 80

Which of the following transistor parameters are measured with the transistor tester?

Back 80

Collector leakage and current gain

Front 81

When you are disconnecting a transistor from the transistor tester, in what position should the POLARITY switch be placed?

Back 81

PNP

Front 82

When you are testing a transistor with a transistor tester, for the reading to have +/- 15 percent accuracy, the resistance from emitter to base must be what minimum value?

Back 82

300 ohms

Front 83

When you are testing an in-circuit diode with the transistor tester, the meter pointer deflects below the midscale point. What does this indicate?

Back 83

The diode is faulty

Front 84

The RCL bridge measures an unkown resistance by balancing the resistance value of the unkown component with that of known components inside the test set. What type of circuit is used in this method of measurement?

Back 84

Wheatstone Bridge

Front 85

To make an inductance measurement on the model 350DE, you must first adjust the DET GAIN control to what position?

Back 85

2

Front 86

When you are selecting forward or reverse power measurements, what components of the rf wattmeter are restricted to a 180 degree rotation range?

Back 86

The coupler-dector

Front 87

Of the follwoing available rf wattmeter power ranges, which one should you select when measuring an unkown power?

Back 87

1000 watts

Front 88

To take power readings, you connect an in-line rf power meter in what configuration in the transmission line?

Back 88

Series

Front 89

Which of the following test instruments produces a standard of measurement of ac energy for testing electronics equipment?

Back 89

Signal Generator

Front 90

Signal generators are equipped with attenuators for which of the following purposes?

Back 90

To regulate the output signal level

Front 91

Which of the following signal generators should you select to test audio equipment?

Back 91

AF Signal Generator

Front 92

The output level meter of a signal generator reads 0.10 with the attenuator set to 080. What is the actual output in microvolts?

Back 92

0.800

Front 93

Frequency counters serve which of the following purposes?

Back 93

Measure frequencies in a circuit

Front 94

In logic probes, which of the following devices are used as an indicator?

Back 94

an LED

Front 95

The VERT control adjustment controls what position of the signal on the CRT display?

Back 95

Vertical

Front 96

The axes of the CRT display on the Tracker 2000 are divided into what number of quadrants?

Back 96

4

Front 97

Quadrant 2 of the Tracker 2000 CRT is used to display what signal information?

Back 97

Negative voltage and positive current.

Front 98

What is the principal use of the oscilloscope?

Back 98

To visually examine waveforms

Front 99

In a basic oscilloscope, what is the purpose of the deflection system?

Back 99

To position the beam on the screen

Front 100

In oscilloscopes using electrostatic CRTs, what type of signal is used to produce horizontal beam movement?

Back 100

Sawtooth Wave

Front 101

The length of time the phoshpor coating on the CRT remains bright after the electron beam is removed depends on which of the following characteristics?

Back 101

Persistence of the coating

Front 102

An oscilloscope that can display two vertical input signals at teh same time is said to be what type?

Back 102

Dual-Trace

Front 103

The FOCUS control on the front of an oscilloscope is used to adjust what characteristic on the CRT display?

Back 103

Beam size

Front 104

What control on the front panel of an oscilloscope limits the input signal amplitude and allows the oscilloscope to be used with a wide range of signals?

Back 104

ATTENUATOR

Front 105

What is the purpose of a variable potentiometer mounted on the VOLTS/DIV control of an oscilloscope?

Back 105

To provide definite step control of the input signal

Front 106

The time base of an oscilloscope is variable to enable the instrument to

Back 106

operate over a wide range of input frequencies

Front 107

The triggered oscilloscope has which of the following advanctages over a basic oscilloscope?

Back 107

Improved presentation stability

Front 108

The TRIGGER and LEVEL controls are used to sycnchronize the sweep generator with what signal?

Back 108

Input

Front 109

The setting of what control establishes the amplitude point of the input waveform at which the displayed sweep will begin?

Back 109

TRIGGER LEVEL

Front 110

Which of the following electrical quantities can be measured using an oscilloscope?

Back 110

Frequency

Front 111

What two modes are used to obtain the dual trace on an oscilloscope?

Back 111

Chop and alternate

Front 112

In a dual-trace oscilloscope, the gate that controls both sweeps is controlled by a multivibrator that operates at which of the following maximum frequencies?

Back 112

1200 kHz

Front 113

What is the basic internal configuration of the typical dual-trace oscilloscope?

Back 113

One gun assembly with two vertical channels

Front 114

The horizontal sweep channels of the dual-trace oscilloscopes have which of the following time base circuit configurations?

Back 114

Variations of all the above configurations

Front 115

On the spectrum analyzer, the RF input jack is used to accept what maximum frequency input signals?

Back 115

21 GHz or below

Front 116

The POSITION control on the spectrum analyzer is used to adjust which of the following CRT display features?

Back 116

Vertical and Horizontal position