TAMU ATMS 25' Flashcards
The first step before operating a boom sprayer in a field is to _____
Check and calibrate the sprayer system
The primary purpose of a boom sprayer is to _____
Apply liquid chemicals evenly across a field
Before calibrating a boom sprayer, it is important to check _____
All of the above
The recommended practice when transporting a boom sprayer on a public road is to _____
Use all required warning devices, including SMV emblems and lights
The primary function of the pressure regulator in a boom sprayer is _____
Control the flow and pressure of the spray solution
A flow meter on a boom sprayer measures _____
The rate at which the liquid is being applied
Of the following factors, _____ affects nozzle performance in a boom sprayer.
All of the above
When operating a boom sprayer, minimize spray drift by _____
Using the correct nozzle size and lowering boom height
Before adjusting a boom sprayer’s application rate, check _____
All of the above
Preventive maintenance on a boom sprayer should include _____
All of the above
Nozzle selection is important when applying chemicals with a boom sprayer because _____
It determines droplet size and spray pattern
A hydraulic boom sprayer system is primarily powered by _____
Hydraulic pump driven by the tractor
If a nozzle on a boom sprayer becomes clogged, the correct action is to _____
Remove and clean the nozzle according to the manufacturer’s instructions
Overlapping spray patterns in a boom sprayer setup can result in _____
Over-application and potential crop damage
To determine gallons per acre (GPA) when calibrating a boom sprayer, consider _____
All of the above
After completing a chemical application with a boom sprayer, _____
Flush the system with clean water
The three main factors influencing application rate in a boom sprayer are _____
Travel speed, nozzle size, and pressure
A pressure gauge on a boom sprayer is used to _____
Measure the pressure in the system to ensure even application
The most common reason for uneven spray patterns in a boom sprayer is _____
Worn or clogged nozzles
A boom sprayer should be calibrated _____
Every time a change is made to speed, nozzles, or application rates
The Hypro 8 Roller pump is rated a maximum flow of 12 gpm. The abbreviation gpm means _____
Gallons per minute
The Hypro 8 Roller pump is rated at a maximum continuous pressure of 100 psi; psi means _____
Pounds per square inch
The housing of the pump has port sizes of ¾” NP, NPT is the abbreviation for _____
National Pipe Thread
The Hypro 8 Roller pump is available with either cast-iron, Ni-Resist or the SilverCastTM bodies. The abbreviation Ni means _____
Nickel
The Hypro 8 Roller pump has a CCW shaft rotation; the abbreviation CCW means _____
Counter Clockwise
The TeeJet Nozzle Strainer Mesh Screen best for more complete filtering is _____
The green strainer with the size 100 mesh
High pressure is considered to be in the range of 30 – 60 psi, the medium pressure range is between 20 - 30 psi, and the lower pressure is between _____ and 20 psi.
5
One gallon of colorant will treat _____ gallons of spray solution.
600 – 700 gallons
Of these items _____ is NOT appropriate PPE for chemical application.
None of these
Precautionary statements on pesticide labels include _______.
All of the above
The impact of a pesticide on a specific soil depends on _____.
All of the above
Under federal regulations, commercial applicators must provide records of restricted-use pesticides within _______ to the private applicator for whom the application was made.
30 days
Of the following types of information, _____is considered included information in the directions for use.
All of these
When selecting an electric motor for an application, the most important factor to consider is _____
The required voltage and power rating
A motor nameplate indicates service factor (SF), which represents _____
How much the motor can be overloaded without overheating
Horsepower (HP) is a measure of _____
The rate at which the motor performs work
Three-phase electric motors are preferred over single-phase motors for industrial applications because they _____
Provide smoother operation and higher efficiency
Locked rotor torque refers to _____
The torque produced when a motor starts from a complete stop
The power factor of an electric motor indicates _____
The amount of useful power compared to apparent power
If an electric motor’s nameplate lists 1750 RPM, this indicates _____
The speed of the rotor when the motor is running at full load
A magnetic relay is used in motor control circuits to _____.
Provide a physical connection between electrical contacts using an electromagnet
A programmable logic controller (PLC) is commonly used for _____.
Automating motor operation and responding to sensor inputs
Of the following switch types, ____ switches are designed to detect the presence of an object and trigger a response.
Photoelectric
A limit switch is commonly used in electric motor applications to _____.
Detect and stop motion when a moving part reaches a preset position
A timer relay in an electric motor circuit is used to _____.
Delay activation or deactivation of the motor for a set period
A float switch in an electric motor control circuit is commonly used to _____.
Detect the level of a liquid and activate or deactivate the motor accordingly
The most common type of switch used to change the direction of an electric motor’s rotation is the _____
Double-pole double-throw (DPDT switch)
When reversing the direction of a three-phase motor, you should _____.
Swap any two of the three-phase power leads
Before connecting an electric motor to a power source, always _____
All of the above
A motor starter is used in an electric motor control system to _____
Gradually apply power to prevent high inrush currents
Of the following conditions, _____ can cause an electric motor to overheat.
All of the above
Kilowatts (kW) is another measure of an electric motor’s power output; one horsepower (HP) = approximately _____
0.75 kW
The torque produced by an electric motor is measured in _____
Newton-meters (Nm) or pound-feet (lb.-ft)
The number one reason for bearing failure is _____
Lack of Lubrication
Horsepower (hp) is the unit of mechanical power equal to _____ watts of electrical power (assuming 74.6% electric motor efficiency).
746 watts
When electrons move back and forth, reversing their direction regularly, this is _____
alternating current (AC)
Power equal to ____ watts of electrical power (assuming 74.6% electric motor efficiency)
746 watts
Turning off the switch for an electric motor is one example of a _____
open circuit
The type of circuit that results from an electrical current flowing in an unintended path is a _____
short circuit
A _______ fuse can carry a temporary overload of electrical current, such as starting an electric motor, for a short period without disengaging the contacts or melting the fuse link
time-delay
If one conductor is carrying less current than the other, a condition known as _______ has occurred
circuit inequality
The formula used to calculate watts is _____
volts x amperes
Of the following, _____ is a type of electrical conductor
both a and b
The guideline of requirements for safe design and installation of electrical wiring systems is _____
National Electric Code (NEC)
The abbreviation PVC stands for _____, relative to plumbing materials
Polyvinyl Chloride
The type of PVC pipe commonly used for high-pressure applications is _____
Schedule 80
The tool commonly used to cut PVC pipe accurately is the _____
PVC pipe cutter or tubing cutter
Before completing a PVC pipe connection, apply _____ to the ends of the pipe
Primer and solvent cement
When assembling plastic pipe, the purpose of PVC primer is _____
To clean and soften the pipe surface for better bonding
The type of fitting used to connect two PVC pipes in a straight line is the _____
Coupling
A PVC union fitting is used for _____
Allowing easy disassembly of the pipe system
When installing a drainage system, the recommended slope for proper flow is _____
¼ inch per foot
The type of PVC fitting used when connecting three pipes at a 90-degree angle is the _____
Tee
The best method for securing PVC pipe in an underground irrigation system is _____
Using solvent cement and ensuring proper backfilling
To create threads on PVC pipes if a threaded connection is needed, use a _____
Pipe tap
The component of an irrigation system that controls water flow automatically is _____
Solenoid valve
A backflow preventer in an irrigation system is used to _____
Prevent contamination of the main water supply
When installing PVC pipes for an underground irrigation system, bury pipes at a depth of at least_____
12 inches
The best fitting for connecting a flexible irrigation hose to rigid PVC pipe _____
Barbed adapter
Before testing a newly installed PVC plumbing system, _____
Allow the solvent cement to cure fully
The most used type of valve to control water flow in irrigation systems is the_____
Ball valve
To smooth rough edges after cutting PVC pipe, use a _____
Deburring tool or reamer
The type of irrigation system using perforated pipe to slowly release water underground is the _____
Drip irrigation
A trench for an underground PVC pipe should be _____
At least twice the width of the pipe
The primary function of a boom sprayer is to _____
Apply liquid chemicals
The primary purpose of calibrating a boom sprayer is _____
To ensure even application of chemicals
The most common material for irrigation pipes today is _____
PVC
The role of a magnetic relay in an electric motor is _____
To control the flow of electrical current
Of the following tools, _____ is most appropriate for cutting PVC pipe
Hacksaw
The operator’s manual of a boom sprayer is primarily used to _____
Learn safe and appropriate operational practices
The unit of measurement for electric motor power is _____
Watts
Of the following components, ____ are parts of a boom sprayer
Nozzles
The function of a limit switch is _____
To detect the position of a moving part
The most important factor when selecting an electric motor for an application is _____
Torque and power requirements
Your subsurface irrigation system waters a herb planting; you pay 0.1187 cents per KWH to power your ¾ hp well pump, costing you _____ to apply 70 gallons of water in 24 hours
$2.13
Safety words such as danger, duck, and watch out! are positioned near _____
hazards
Motor horsepower is _____
1 hp = 746 watts
A 3’ diameter pulley turning with a force of 375 lbs. develops _____ of torque
1,125 foot-pounds
A given plot contains 57,630 square feet, or _____ acres
1.323
Use an ASABE hand signal to tell the spray rig operator to lower the boom; _____
point your arm & finger downward and make a circular motion
You use a 3 hp electric motor to pump municipal effluent from your storage lagoon onto your sod plantings. You will pay _____ to apply 345K gallons of liquid to your sod in 16 hours through a side roll, when power costs you 0.090 cents / KWH
$11.525
