Ag systems final Flashcards
work is the result of a _____ moving through a _____
it is measured in _____
force, distance, ft-lb
What class lever has effort in the middle
3rd
what class lever has fulcrum in the middle
1st
what class lever has resistance in the middle
2nd
WHat class lever has a mechanical advantage of distance
3rd
what class lever has a mechanical advantage of force
2nd
Big drives small speed goes ____ and torque goes ____
Up, Down
Small drives big speed goes ___ and torque goes ____
Down, Up
A _____ is a device used to connect or disconnect the power source from the mechanical power transmission system
Clutch
A double action differential cylinder will retract ______ and will extend with ______ force
Faster, More
An internal combustion engine is a device for converting the _______________ energy in fuel into ____ energy and then into ____________ energy to do useful work
Potential chemical, heat, mechanical
Correct order of power ratings
Theoretical, Gross Engine, Net Engine, PTO HP, and Drawbar
A ______ leveling survey would be conducted to develop a plot showing what the surface of a piece of land looks like; a _______ leveling survey would be conducted to establish the elevation of a new benchmark
Profile, differential
A ________ is a rod reading taken on a point of known elevation: such as ____ in order to determine the __________
Backsight, Benchmark, HI
A _______ is a type of erosion where water washes out small channels is a field can be filled in by normal tillage operations such as disking
Rill
List three specific factors included in the Revised Universal Soil Loss Equation that affect the amount of soil lost to water erosion from an agricultural field
Rainfall amount, tilling system, soil texture, slope
heat flows from areas of ___ concentration to areas of ___ concentration
high, low
Temperature measured with regular thermometer
Dry bulb temperature
Temperature measured after the result of evaporative cooling
Wet bulb temperature
Size of the container necessary to hold one cubic foot of air under given conditions
Specific volume
Measured in BTU/lb of dry air
Enthalpy
Level of moisture in an air mass compared to the potential amount of air a mass could hold
Relative humidity
