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CE Exam MARCH CYCLE > Power Generation > Flashcards

Power Generation Flashcards

(113 cards)

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1
Q

In accordance with the NEC what is required for emergency and standby electrical systems?

A

Kept completely separated from other electrical systems

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2
Q

Which of the following must comply with electrical safety standards and codes?

Cost
Manpower
Design

A

Design

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3
Q

Generators are not permitted to be closer than how many feet form the load?

A

25 feet (7.6 meters)

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4
Q

“Ratio of average to peak power” best describes which factor?

A

Annual load

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5
Q

Historically, all general purpose lighting power used in overseas United States bases in what voltage?

A

120

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6
Q

AC motors above 5 horsepower operate satisfactorily in what voltage systems?

A

208 or 240

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7
Q

The combination of power and light circuits will be accomplished by the use of which of the following voltage systems?

A

208 to 240

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8
Q

Which of the following is not a unit of measurement associated with electrical loads?

Inductance
Kilowatts
Amperes
Kilovoltamperes

A

Inductance

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9
Q

The ratio between the actual maximum demand and the connected load is called what?

A

Demand factor

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10
Q

Which NEC article provides the requirements for determine demand factors?

A

Article 220

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11
Q

What is the first step when deleting a suitable site for a generator?

A

Study plot plan of area

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12
Q

If a level dry area can not be found, what should be done?

A

Place generator on planks or logs for suitable base foundation

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13
Q

If exhaust piping installation required loops in the system, what must be done?

A

Install drain cock at lowest point of the system

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14
Q

Exhaust piping insulation located inside A structure must be capable to withstand what maximum amount of temperature?

A

1500 F

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15
Q

What is the minimum AWG size utilized with the ground terminal wire?

A

6

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16
Q

What is the primary reason for the voltage changeover board?

A

Permits reconnection of generators phase windings

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17
Q

What is the output of the voltage changeover board of connected in series?

A

240/416

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18
Q

What is the prefers material used for ground in an underground metallic water piping systems?

A

A metal driven rod

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19
Q

What is the minimum diameter of a ground rod if manufactured out of piping?

A

3/4 inch

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20
Q

What is the minimum depth that a ground rod must be driven into the ground?

A

8

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21
Q

The ground lead utilized with the ground rod is manufactured out of what type of material?

A

Copper

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22
Q

The resistance of the soil used to implant a ground rod is dependent upon which of the following factors?

Chemical composition of soil

Depth of ground rod

Moisture content

Acidity of soil

A

Moisture content

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23
Q

What is one of the best means of reducing the resistance to ground?

A

Use of additional rods

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24
Q

Load cables are connected in which order? ;

A

L0, L3, L2, and L1

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25
Where is the voltage changeover board located?
Directly above the load thermal board
26
When multiple rod, pipe, and or plate electrodes are installed, they are required to be no less than how many feet?
6
27
If the conductor is too small to carry the current demanded by the load what kind of fault might occur?
Open circuit
28
The voltage drop should not exceed what percentage for lighting loads?
3 percent
29
When selecting a feeder conductor capable, what carrying percentage of rated generator amperes should be selected to eliminate voltage drop problems?
150 percent
30
Wire placed underground should be manufactured out of what type of material?
Direct burial, rubber jacketed cable
31
How long is a trench dug for cable laying in a traffic area?
24 inches
32
What is your primary purpose as a generator watch?
Produce power.
33
Which of the following is not a characteristic built into navel electrical installations? Cost effectiveness Simplicity Ruggedness Flexibility
Cost effectiveness
34
What is done first prior to starting the generator?
Conduct the prestart checklist in sequence.
35
Before starting the set the first time, what needs to be verified complete?
Preventive maintenance checks
36
When are log readings conducted on a running generator?
Every hour
37
Which of the following is one of the checks conducted? Coolant level when generator running Vibration assessment Hydraulic pressures Exhaust gas readings
Coolant level when generator running
38
What is the significance of hearing unusual sounds emitting from generator?
Indication of malfunction
39
If the load of a generator becomes to large to handle, what actions should be taken?
Add another generator in parallel
40
Before two generators can be paralleled, which of the following conditions must be met? Both frequencies must be within 10 percent Both voltages must be within 25 volts Both power factors need to be matched Both terminal voltages have to be equal
Both terminal voltages have to be equal
41
What are two types of governor operations?
Isochronous and speed droop
42
When a second machine is utilized, what is the name of this machine?
Slave
43
When paralleling in a droop mode, the governor of one set must be in what position?
Isochronous
44
What is indicated if the if the synchronizing lights blink on and off simultaneously?
Voltages sequence of two machines are in phase
45
What prevents the operator from paralleling the generators if all conditions are not met?
Permissive paralleling relay
46
All 5kw through 750kw generator sets are equipped with what types of batteries?
Dry charged, less the electrolyte
47
The 60kw generator is equipped with how many batteries?
2
48
The electrolyte placed in a cell should be between which of the following temperature ranges?
60 F to 95 F
49
How long after electrolyte is added does the battery need to cool down?
1 hour
50
What type of charge is defined as restoration of a the battery to its charges condition during cycle of operation?
Normal
51
What type of charge is defined as a charge to remove sulfate from the plates?
Equalizing
52
What type of charge is defined as the commenced as a higher rate and may be detrimental to the battery?
Fast charge
53
At what electrolyte temperature will you stop the charge to Allow the battery to cool down?
110 F
54
Never allow the electrolyte temperature to get past what temperature reading?
115 F
55
What instrument is use to measure the active ingredients in the electrolyte?
Hydrometer
56
What is defined as the ratio of the weight of the electrolyte to the weight of the same volume of Pure water?
Specific gravity
57
What is disposition of the sample taken with electrolyte?
Return to battery cell
58
Which fluid requires a level check prior to starting a generator set?
Crankcase oil
59
Coolant level needs to be within how many inches of the top of the radiator?
2 inches
60
The day tank permits how many minutes of engine operation?
5 minutes
61
To what piece of equipment are the muffler and the exhaust pipe connected?
Turbocharger exhaust elbow
62
What is the primary purpose of the muffler?
Reduces engine exhaust noise
63
What device is utilized to compare the phase sequence of a three phase generator?
Phase sequence indicator
64
Panel board are accessible through which side of the enclosure?
Front
65
Which of the following is not a category of maintenance associated with power plant maintenance?
Manufacture
66
What are two types of organizational maintenance?
Operator and preventive
67
Whalen using compressed air, what pressure should not be exceeded?
30 psig
68
What's does the TQG-B model generator have that is not installed on the TGQ-A model?
Digital control system
69
When Conducting inspection of the TGQ-B generator, where does the inspection start?
Rear
70
When is the operator made aware when there is a problem with the air cleaner assembly?
Restriction indicator pops up
71
What receptacle is used to connect machines of the same size and model number?
Paralleling
72
What voltage is associated with the convenience receptacle?
120VAC
73
What is the purpose if the dead crank switch?
Allow engine turn over without starting
74
What piece of equipment regulates fuel amounts that enter the engine to maintain speed?
Actuater
75
What is used to monitor engine speed on the governor control unit ?
Magnetic pickup
76
What voltage batteries are associated with the TQG-B model generator?
12 VDC
77
What is the NATO slave receptacle used for?
Jump starting units from any 24VDC starting systems
78
The reconnection board allows reconfiguration from 120 volts to what voltage low wye setup?
208 volts
79
Where does the exhaust exit TGQ-B generator?
Top
80
Which of the following pieces of equipment is not driven by the fan belt?
Fuel pump
81
Over current protection of the alternator is provided by a inline fuse rated at what amperage?
30 amps
82
How many checklist are associated with the TQG-B generator?
4
83
What is the status of the generator if one of he enclosure doors does not shut?
Deadlined
84
What is amperage rating of the DC power control fuse?
10 amps
85
What is the position of the frequency selection switch if utilizing NATO power?
50 hertz
86
When starting the generator how long is the engine control switch I the start position?
15 seconds
87
How long is the generator allowed to warm up prior to connect on a load?
For 5 minutes
88
The noise levels of generators sized from 5KW to 200KW ranged from how many decibels at 25 ft?
77 dBA to 93 dBA
89
Single hearing protection is needed for noise less than how many dBA?
84
90
Double hearing protection is needed for noise levels greater than how many dBa?
104
91
Generators must not be closer than how many feet to a load because of noise, fire hazard, and air circulation?
25 feet
92
A generator set should not be operated while inclined more than how many degrees from level?
15 degrees
93
The annual load factor of a well operated active base should be 50 percent or more with a power factor of what percent or higher?
80 percent
94
Practically all general purpose lighting in the United States and at United States overseas bases is how many Volts?
120
95
What is the sum of the rated capacities of all electrical appliances, lamps, motors, and so on, connects to the wiring of the system?
Connected load
96
What is the ratio between the actual maximum demand and the connects load called?
Demand factor
97
Shelters should have additional Windows or doors installed in localities where the summer temperatures exceed what temperature at any time?
80F
98
Exhaust piping insides building has to be covered with insulation capable of with standing a temperature of how many degrees?
1500F
99
A ground rod must have a minimum diameter of 5/8 inches of solid or what size if it is pipe?
3/4 inches
100
A ground plate must have a minimum area of how many square feet and, where practical, be embedded below the permanent moisture level?
2
101
All electrical generators operating at how many volts or less must be solidly grounded?
600 volts
102
A ground rod has to have a minimum diameter of 5/8 inch if solid and 3/4 if pipe, and it has to be drive to a minimum of how many feet?
8 feet
103
Watches should be avoided that exceed how many hours unless a emergency conditions dictate their use?
8 hours
104
What is a complete Daily record of he operating hours and conditions of a generator set?
Station log
105
The engine on the generator should not be cranked in excess of how many seconds at a time?
15 seconds
106
How much time should the starter on generator sets have to cool between cranking?
3 mins
107
Electrolytes must never exceed what temperature when being placed in dry cells?
90 F
108
What breaks or interrupts the circuit anytime there is a short circuit or overload condition in the old cables?
Circuit breaker
109
What are three major categories o Maintenance?
Depot, intermediate, and organizational
110
What type of maintenance includes the hourly, Daily, and weekly maintenance requirements recommended in the manufactures literature?
Operator
111
What measures the oil level in the engine drain pan?
Oil dipstick
112
The generator must member within hoe many feet of any paralleled generator set and within how many feet of any auxiliary fuel supply?
25 feet for both
113
The combined resistance of two rods properly spaced and connected in parallel should increase the resistance compares to one rod?
60 percent

CE Exam MARCH CYCLE (5 decks)

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