Test Your Knowledge Of Irrigation

1.

A Cla-Val installed on an irrigation system pump station is use to protect irrigation systems against
- A.
  
  High water pressure
- B.
  
  Water cavitation
- C.
  
  High water flow
- D.
  
  Low water level in a wet well
- E.
  
  Pump station discharge faults
Correct Answer(s)
A. High water pressure
B. Water cavitation
C. High water flow
E. Pump station discharge faults

Explanation
The Cla-Val installed on an irrigation system pump station serves to protect the irrigation system against various issues. It helps in preventing damage caused by high water pressure, which can lead to bursting of pipes or fittings. It also protects against water cavitation, which occurs when there is a sudden drop in pressure, causing bubbles to form and implode, damaging the pump and other equipment. Additionally, the Cla-Val ensures that the system can handle high water flow without any issues. Lastly, it helps in detecting and addressing pump station discharge faults, ensuring that the system operates smoothly and efficiently.

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2.

On a pump station's electric motor a routine test should include a "Meger Test". The Meger Test evaluates
- A.
  
  The motors RPMs
- B.
  
  The motors work capacity in AMPS
- C.
  
  The motors insulation integrity
- D.
  
  The motors bearings and lubrication quaility
- E.
  
  The motors true Horse Power
Correct Answer
C. The motors insulation integrity

Explanation
The "Meger Test" is a routine test that should be included in the evaluation of a pump station's electric motor. This test is specifically used to evaluate the motor's insulation integrity. It is important to assess the insulation integrity of the motor to ensure that there are no faults or breakdowns in the insulation system, which could lead to electrical failures or hazards. By conducting the Meger Test, any potential issues with the motor's insulation can be identified and addressed promptly, ensuring the motor's safe and efficient operation.

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3.

A misaligned irrigation head and / or a not-to-grade head can cause up to a
- A.
  
  10% irrigation efficiency reduction
- B.
  
  15% irrigation efficiency reduction
- C.
  
  20% irrigation efficiency reduction
- D.
  
  25% irrigation efficiency reduction
- E.
  
  30% irrigation efficiency reduction
Correct Answer
C. 20% irrigation efficiency reduction

Explanation
A misaligned irrigation head and/or a not-to-grade head can cause a 20% irrigation efficiency reduction. This means that if the irrigation head is not properly aligned or if it is not at the correct grade, there will be a significant decrease in the efficiency of the irrigation system. This could result in water being wasted or not reaching the intended areas, leading to inefficient water usage and potential damage to plants or crops.

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4.

Total Dynamic Head (TDH) is important to irrigation pump stations, why
- A.
  
  TDH is a term to discribe pressure
- B.
  
  TDH is a term to reflect resistance in the pump
- C.
  
  TDH is the resistance in the pump intake
- D.
  
  TDH is the measurement of pump length
- E.
  
  TDH is the term the discribes the relationship of water to gravity
Correct Answer(s)
A. TDH is a term to discribe pressure
B. TDH is a term to reflect resistance in the pump
C. TDH is the resistance in the pump intake

Explanation
Pumps aren't rated in PSI (pounds per square inch) as the PSI reading is dependant on the fluid's density

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5.

Evapotranspiration Rate (ET) is based on what climatic factors
- A.
  
  Wind speed
- B.
  
  Temperature
- C.
  
  Humidity
- D.
  
  Soil type
- E.
  
  Sun exposure
Correct Answer(s)
A. Wind speed
B. Temperature
C. Humidity
E. Sun exposure

Explanation
Evapotranspiration Rate (ET) is determined by several climatic factors, including wind speed, temperature, humidity, and sun exposure. Wind speed affects the rate at which water evaporates from surfaces, as it helps in removing the water vapor. Temperature plays a crucial role in evaporation, as higher temperatures increase the kinetic energy of water molecules, leading to faster evaporation. Humidity affects evapotranspiration by determining the concentration gradient of water vapor between the surface and the atmosphere. Sun exposure provides the energy required for evaporation. Soil type, although not mentioned in the question, can also influence evapotranspiration by affecting water retention and availability.

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Test Your Knowledge Of Irrigation

A Cla-Val installed on an irrigation system pump station is use to protect irrigation systems against

On a pump station's electric motor a routine test should include a "Meger Test". The Meger Test evaluates

A misaligned irrigation head and / or a not-to-grade head can cause up to a

Total Dynamic Head (TDH) is important to irrigation pump stations, why

Evapotranspiration Rate (ET) is based on what climatic factors