Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

Irrigation > Final > Flashcards

Final Flashcards

1
Q

What is the “C Factor” or Coefficient of Friction?

A

Measurement of the roughness of the inside wall of the pipe. The C-factor is used to calculate friction loss in pipe.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

For example…a pipe called a TBE Nipple is called this why? What is TBE?

A

Threads on Both Ends

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What doe the TOE mean on a peice of pipe called a TOE Nipple?

A

Threaded on One End

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the differnece between a Concentric Reducer and a Eccentric Reducer?

A
  • Concentric is a fitting with both ends on the same center line.
  • Eccentric is a fitting with one flat side and is used to prevent the entrapment of air in pump suction piping.
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What does PVC stand for?

A

Poly-vinyl Chloride

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

The higher the schedule number the ________ the pipe.

A

Thicker

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

for PVC pipe….the pressure rating ________ as size increases.

A

decreases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What does SDR stand for?

A

Standard Dimention Ratio

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

In SDR Pipe, if you have a higher number, it means you have a _______ pressure rating.

A

Lower

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is the most common SDR pipe on golf courses?

A

SDR 21

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Is PVC pipe UV resistant?

A

No, it will deteriorate when exposed to sunlight for a long period of time.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

When applying primer…what are the first three steps for application?

A
  1. apply inside of fitting
  2. apply outside of pipe
  3. apply inside of fitting
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How do you read measurements on a “T” ?

A

Run (across the top of the T)

then

Branch or **Bull **(perpendicular part of the T)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is a Chamfer?

A

a Bevel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Fabricated epoxy coated steel pipes are susceptible to failure due to what?

A

Chipping and Erosion

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

when using PVC gasket joint fittings in a golf course setting, they should only be used in _________ sizes where potential for pressure surges is low.

A

smaller

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

When using Ductile Iron Fittings with corrosive soils & water supplies….what is the best choice?

A

Epoxy coated fittings

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

When using Push-on Fittings, what must you have?

A

Thrust Block or Restraint to prevent the fitting from blowing out.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Thrust Blocks must be constructed or poured in place to prevent fitting pull-out at:

A
  • all directional changes
  • whereever pipe sizes increase or decrease
  • at all dead ends
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Joint Restraints can be used in conjunction with or in place of ____________.

A

Thrust blocks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Why would you want a gate valve on a wet well intake?

A

To access the wet well to clean up debris, fetch tools and inspect equipment.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What causes the stray electric current?

A

Electrolysis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

How often do they reccomend you exercise your Resilient Wedge Gate Valve?

A

Semi-Annually

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

What are the problems with ball valves?

A
  • Water gets trapped and can freeze, causing failure
  • They are so easy to open and close quickly that you can create water hammer and ruin shit!
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
How do you prevent a ball valve from freezing?
leave it 1/2 open - 1/2 closed position
26
Where are Butterfly Valves typically used?
Pump Stations
27
Where would you want to install Air/Vaccum Release Valves?
At high points and dead ends
28
All zone valves should be ______ \_\_\_\_\_\_\_ due to the high pressures typically found on a golf course irrigation system.
pressure regulating
29
A valve that uses a soleniod mechanism requires ______ electrical current to initially open than it does to stay open.
More
30
What are the only things that can go wrong with a valve?
1. valve wont open 2. valve wont close 3. valve weeps
31
Straight, Non-Tapered thread connection is called:
ACME
32
DWV means:
Drain Waste Vent
33
What does FIPT mean?
Female iron pipe thread
34
What does MIPT mean?
Male iron pipe thread
35
What does NPT mean?
National pipe thread
36
PVC gasket joint fittings should only be used with what size pipe on golf courses?
2 1/2" or smaller
37
On a Latching Solenoid Operation...how much power is required to hold it open?
None.
38
On a Latching Solenoid Operation ...How is does it close?
It reverses the polarity
39
No irrigation system can entirely eliminate:
- pump station ramp up. - the "tailing off" effect.
40
Weaher Stations are able to control Central Control Systems. True or False?
True
41
What do weather stations consist of?
 Air Temperature and Humidity Sensor  Wind Speed and Direction Sensor  Rain Gauge  Pyranometer
42
Where should you place your weather station?
The Weather Station should be located over open level terrain at least 30’ in diameter and at a distance of at least 10 times the height of any nearby building, tree or other obstruction. Stay at least 90 feet away from large paved areas.
43
What are areas to avoid when installing your weather station?
Rooftops Steep Slopes Sheltered Hollows High Vegetation Shaded Areas Swamps Areas that hold standing water after rain
44
Approximately _______ satellites provide world wide coverage
28
45
What are the ways that HDPE fittings can be joined together?
* Thermal Fusion * Socket Fusion * Electro Fusion * Mechanical
46
The coefficient of thermal expansion for HDPE pipe is ____ times that of PVC pipe.
3
47
When threading metal to plastic pipe, the metal fitting or valve should have ______ ends and the plastic fitting or nipple should be \_\_\_\_\_.
female male
48
Asbestos Cement Pipe is also called \_\_\_\_\_\_\_.
Transite Pipe
49
When applying PVC cement, what steps do you take and when do you want to do it?
* Outside, Inside, Outside * While the primer is still wet
50
NEC stands for
National Electric Code
51
UF stands for
Underground Feed
52
AWG stands for
American Wire Guage
53
in AWG the larger the number means:
the thinner the wire
54
What do insulators do?
prevent or block the flow of electricity
55
What product has better insulation...PVE or PE?
PE
56
Green wire is for what?
Equipment Ground
57
White wire is what?
Neutral or Grounded Conductor
58
Black or Red wire is what?
Hot
59
AC stands for
Alternating Current
60
DC means
Direct Current
61
VAC means
Volts Alternating Current
62
What do Ohms measure?
Resistance
63
What do Amps measure?
Current
64
What do Volts measure?
electrical pressure
65
Only 3 items that can go wrong electrically listed in order of trouble shooting sequence
– 1.) Satellite / Field Controller – 2.) Field Wiring – 3.) Solenoid
66
The transformers outgoing voltage should be between:
23 to 28 VAC
67
Normal voltage of a solenoid is how many volts?
24
68
Force = ?
Pressure x Area

Irrigation (1 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions