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ASM 115 - Final 1
Terms in this set (67)
List four of the eight problem solving methods
Math, patterns, flow charts, intuitive reasoning
What does force do to an object?
List four simple machines
lever, pulley, wedge, inclined plane
Complete the formula: Force x _______________ = Work
What do we get if we divide work done by the time it took?
Who is mr. horsepower?
What is defined as 33,000 ft-lb/min?
Any device that increases or regulates the effect of a force or produces motion is a?
Most common fuel type used by a rotary engine?
What is a more common name for a compression ignition engine?
What are the four strokes of a four stroke cycle engine in order?
intake, compression, power, exhaust
What is the greatest advantage to using a two stroke cycle engine vs. a four stroke cycle engine
power to weight ratio
Which engine type has a higher compression ratio?
American engines typically use two types of displacement measurement units, what are those units?
cubic inches and liters
What atmospheric gas must be introduced to liquid fuel to get it to burn?
What are three of the four types of parts used in a power train to transfer power from one place to another place on a machine?
Hydraulics, pulleys, gears
If we opened up a typical steering box, we would see a ___________ gear set
By percentage, how much will torque change on a shaft when I double the size of the pulley it has on it?
What are two advantages to using hydraulic power?
remote power and reversible
What device creates flow in a hydraulic system?
What decade did tractors start to work in the field in measurable numbers?
What happened to a lot of tractor companies during the 1980's?
bankruptcy and mergers
What is a tool that can be hooked to a tractor PTO shaft to determine actual horsepower developed by the engine
What part of the tractor generally accounts for the largest power loss?
What is the best way to compare tractors for a given job?
What percent of the bHp is PTO Hp?
Lowering the rated capability of a tractor (engine) because of deterioration or inadequacy (such as high temps or high altitude) is known as?
What US tractor manufacturer has not merged with another one?
Why was the famous Nebraska Tractor Test set up?
The process/procedure of establishing the rate of material dispensed by a machine for a particular set of operating conditions and adjustments?
Causes for variation in distribution from a machine
machine wear, material size, and material weight, all of the above
all of the above
T or F. A selected flow rate of material is a decision made by your agronomist
Broadcasting and gravity are two ways that we apply materials that are?
T or F. Machine calibrations may not be done as the machine is moving
If your ground driven manure spreader covered by a 30ft width, and traveled 10ft. with one revlution of the drive wheel, how much area did you cover?
Given that an acre is 43,560 sq. ft., and it takes 200 revolutions of the drive wheel to empty the manure spreader, how many acres will you cover with manure each time you empty a load?
You bought a grain drill and discovered a chart to set the seeding rate. You seed everyone to the chart but notice the rate to be different. why?
wear of the machine
For most grain drills, seeding rates should be + or - ______________%
Modern air row crop planters use a rotating part to deliver seed spacing called a
What two ways do modern row crop planters use to put seed into the row unit?
air suction & pressure
T or F application rate of a sprayer is related to ground speed
T or F flow rate of a sprayer is related to ground speed
How do the chemicals stay mixed together in a sprayer?
Uneven spray distribution is most commonly due to:
spray nozzles with different ages and wear
The measurement of what has been done is?
T or F: efficiency cannot be mathematically calculated
How well something is done relative to what should be done is defined as?
% efficiency is (_______________ over input) x 100
Time and width utilization refers to _________ efficiency
t or f: a typical range of field efficiency for tillage operation is 30-50%
Not using full machine width, turning, repairs, filling, factors contributing to loss of
An efficient field working pattern should be calculated:
before we enter the field
In the upper mid-west, what direction does the prevailing wind come from?
Next to land, what is the largest investment associated with farming?
T or F: Company name isn't a factor in machine selection
T or F: increased capacity means less efficient use of your machinery
T or F: machinery costs, for new machines, are based on actual numbers
typical life expectancy of a new tractor
t or f: interest is money paid on a loan for the right to have the loan
what has to pay for the new cost of a new machinery shed?
Something bough to protect a machine against it's loss
All fixed costs added together gives you __________ operating costs
All variable costs added together gives you _________________ operating costs
T or F: AOC + THOC will give you total lifetime cost of ownership
T or F: Break-even use of a machine must be more than custom hire cost to be effective
T or F: Even though you custom hire, you are responsible for repair costs if a machine breaks down in your field while it is working there
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