Eno Flashcards

1
Q

What regulation is enforced by the UCMJ and applies to work tasks associated and unassociated with electricity?

A

AFMAN 91-203

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2
Q

Which standard is a federal regulation and effects all general industry employees?

A

29 CRF 1910 Subpart S

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3
Q

What safety standard is a living document?

A

UFC 3-560-01

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4
Q

What was created to fulfill the responsibilities of OSHA and to provide additional guidance on electrical PPE?

A

NFPA 70E

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5
Q

What should be done if a coworker becomes a victim of shock?

A

Safely disconnect them from the power source

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6
Q

Why should you seek professional medical treatment after an electrical shock occurs?

A

To lessen the severity of the injury

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7
Q

At what current value do heart rhythm problems begin?

A

75 mA

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8
Q

In terms of electrical shock, touch potential is when current flows from

A

hand to hand. across the chest

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9
Q

A phenomenon where a flash over of electrical current leaves its intended path and travels through the air from one conductor to another is the definition of

A

Arc flash

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10
Q

What is the minimum arc rating of category 2 PPE?

A

8 cal/cm2

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11
Q

The pressure released from instantaneous heating of the air surrounding the arc and the expansion of vaporized metal is the definition of

A

Arc Blast

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12
Q

Why must an unqualified person be escorted at all times while within the limited approach boundary?

A

They lack the training and knowledge of electrical hazards avoidance

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13
Q

Who has the ultimate authority over technical orders for applicable systems, sub-systems, and activities?

A

Program Manager (PM)

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14
Q

What takes precedence over requirements found in technical manuals that are created by other services but used by the Air Force?

A

Air Force policy

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15
Q

Which type of technical publication covers installation, operation, troubleshooting, and repairing and must be available on the job site when work is being performed?

A

Operation and Maintenance Technical Order

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16
Q

Which type of technical order update changes data in the basic technical order without replacing the existing pages?

A

Supplement

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17
Q

What does a correction fix?

A

Minor errors or omissions

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18
Q

Why does the recommended change process require such scrutiny?

A

For ensuring the validity, accuracy, and completeness of all recommended changes

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19
Q

How are recommended TO changes submitted?

A

Using AFTO Form 22

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20
Q

What is the first step to starting a TO change?

A

Verify the most current TO is in use

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21
Q

If equipment has wide commercial use, then the Air Force?

A

Often defers to the manufacturer’s data

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22
Q

When equipment is not shared by any other installation, what is used?

A

Commercial manuals

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23
Q

Which of the following Unified Facilities Criteria publications provides minimum guidance and standards for the operations and maintenance of standby, emergency and prime power generators?

A

UFC 3-540-07 Operation and Maintenance (0&M):
Generators

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24
Q

To access a new or revised Unified Facilities Criteria publications you must go to the ?

A

Whole building design guide website

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25
What is the purpose of a torque wrench?
To ensure mechanical fasteners are tightened to a specific amount of pressure
26
If you needed to measure the thickness of a bolt you would?
Use a caliper
27
Which of the following best illustrates the use of a tachometer?
Measuring the rotational speed of the hydraulic pump
28
Which of the following best illustrates the use of a feeler gauge?
Measuring the clearance gap on a spark plug
29
What function does the diagnostic tool to the left perform?(clamp on meter)
Measures current flow drawn by the load
30
To properly locate a low power fault within a circuit, which of the following statements apply?
Set multimeter to voltage function
31
What function does the diagnostic tool to the left perform?(insulation tester)
Measures the effectiveness of a generator or motor stator windings
32
If a facility kept having intermittent electrical issues, which of the following statements apply?
Connect a power analyzer and monitor system performance
33
What is the most common types of load banks?
Resistive
34
Which component consists of pieces of coiled wires that heat up when power is applied?
Resistive element
35
Which component indicates when the load bank airflow safety switch activates and shuts down the resistive elements to prevent damage?
Cooling Failure Indicator
36
Which component energizes and protects the load bank control circuits?
Control Power Circuit Breaker
37
What provides the smallest unit of a chemical element?
Atom
38
Insulators have how many electrons in their valence shell?
Five to eight electrons
39
Current is measured in?
Amperes(A)
40
Which of the following is NOT a requirement of a basic circuit?
Fault protection
41
Which of the following best describes a characteristic of a parallel circuit?
Total resistance is less than the smallest unit of resistance
42
Which formula is used to determine power consumption in a DC circuit?
P=I X E
43
In the circuit below, what would happen to the total current if S1 were closed?
Current would increase
44
In the circuit below, what would happen to the total resistance if R2 were changed to 150?
Resistance would increase
45
When measuring phase voltage, which points would be used to get a proper voltage reading?
Phase C to Neutral
46
If a 4 pole generator engine speed is operating at 1500 RPM, then the frequency output is what?
50 Hz
47
When we refer to the Root Means Square (RMS) value, what do most voltmeters measure?
Effective value
48
When using an oscilloscope, what value is being measured?
Peak value
49
If a full-wave bridge rectifier is used, then how many rectifying diodes will be in the circuit?
Four rectifying diodes
50
If a light emitting diode is illuminated, the diode must be
forward biased.
51
When the depletion region meets an equilibrium (neutral charge), this produces what?
A potential barrier zone that prevents any electrons from moving into the anode from the cathode
52
Reverse biasing a diode has what effect on current flow?
Stops current flow
53
What happens when you increase frequency through an inductor?
The inductance increases
54
What are inductors used for?
To slow down current surges and spikes
55
What are the construction factors of an inductor?
Core material, coil length, coil area and the number of turns
56
When do the lines of flux cut across the inductor coil?
If current increases or decreases
57
The amount of charge the material inhibits or encourages is called what?
Permittivity
58
How many conductors make up a capacitor?
2
59
What happens when a source voltage is supplied to an uncharged capacitor?
An electric field develops building a charge between the two plates
60
What is the purpose of a capacitor?
To store electrical energy
61
What is the purpose of a resistor?
To limit the flow of electrons
62
What type of resistors are there?
Fixed and Variable
63
If a resistor has a sixth band, what does that mean?
It is the same as a five band, but with an indicator or temperature coefficient
64
What purpose can a resistor serve in a circuit?
Voltage Regulator
65
Which type of wiring diagram uses different line thicknesses to distinguish between circuits such as primary, emergency and load circuits?
One-line
66
Which type of wiring diagram presents components in sequential order making it easier to understand circuit operation?
Schematic
67
Which type of wiring diagram is used primarily in power plants and shows the connections between generators and switchgear but excludes internal connections of equipment?
Interconnection
68
Which type of wiring diagram is used to inform the technician on where to connect electrical test equipment and also provides wire identification?
Connection
69
Select the term that describes the symbol below. (Letter M in a circle)
Motor - Represents a component which changes electrical energy into motion
70
Select the term that describes the symbol below. (🎥 camera looking)
Alarm - Represents a devices which communicates if there is a problem.
71
Select the term that describes the symbol below. ( three bumps facing each other)
Transformer - Represents a power source having a primary and secondary side
72
Select the term that describes the symbol below.(curved line between two dots)
Circuit Breaker - Represents the fault protection device for a circuit which is resettable.
73
What is used to calculate kilowatts?
Voltage, amperage, power factor
74
When is power factor not used in an equation?
When calculating real power
75
When solving for kW in a three phase circuit, why is 1.73 used?
1.732 stems from the square root of 3 to get an average across all phases
76
When do you use a power factor, other than 0.8, for a three phase power source?
When otherwise specified
77
What is the first step in determining the fuel requirements for generator operations?
Consumption rate
78
Where can the rate of fuel consumption be found for a generator?
Manufacturer's manual or TO
79
Why is 72 hours of fuel recommended, for initial beddown of a BEAR Base?
To give time to place power distribution equipment and get the power plant up
80
Knowing the amount of fuel required to operate at a generator site is critical to ensure what?
That missions continue uninterrupted
81
What tool can be used, with the help of AF Form 487s, to determine real property facility power requirements?
A load table
82
What is not a method of determining power requirements?
Using estimated load requirements
83
Why is it important to know a facility's power requirements?
Generators must be capable of supporting the required load without being oversized or undersized
84
What is the name of an Army produced program that can aid in power requirements for a deployed location?
AutoDISE