Minnesota FFA Agriculture Mechanics Career Development Event
WRITTEN EXAMINATION 2013
You will have 50minutes to complete this examination. Answer the multiple choice questions by selecting theone best answer for each question. Mark your answers on the answer sheet provided.
Do not write on this exam
MIG, Fuel Gas Welding and Cutting, Cold Metal;
1. The correct angle to sharpen a cold chisel for general cutting is:
A. 30 degrees
B. 40 degrees
C. 50 degrees
D. 60 degrees
2. Which type of flame will have an “acetylene feather” indicating that more oxygen needs to be added?
A. Brazing.
B. Neutral.
C. Oxidizing.
D. Carbonizing.
3. Acetylene cylinders have ______threads for gauge attachment.
A. Left hand.
B. Metric.
C. Right hand.
D. Either right or left hand.
4. When the oxyacetylene flame snaps and pops and burns back inside the blowpipe with a shrill hissing or squealing sound it is called a:
A. Backfire.
B. Blowout.
C. Flameout.
D. Flashback.
5. When opening the cylinders for welding the:
A. Oxygen and acetylene cylinders opened all the way.
B. Oxygen cylinder should be opened all the way and the acetylene 1 turn.
C. Oxygen and acetylene cylinders opened 1 turn.
D. Acetylene cylinder should be opened all the way and oxygen 1 turn.
6. The hole size for a tap typically ______than the tap size for coarse threads.
A. 1/16inch larger.
B. 1/16inch smaller.
C. 1/8inch larger.
D. 1/8inch smaller.
7. The pitch of a bolt thread refers to:
A. Root diameter of the thread.B. Outside diameter of the thread.
C. Taper of N.P.t. tap.D. The thread to thread distance.
8. Which welding flame can be used for removing carbon from molten metal, thus softening the metal?
A. Oxidizing.
B. Neutral.
C. Brazing.
D. Carburizing.
9. Acetylene cylinders are packed with a porous material saturated with ______, used to absorb a large quantity of acetylene under pressure.
A. Benzene.
B. Alcohol.
C. Acetone.
D. Caustic soda.
10. The size of a gas cylinder is measured in:
A. Square inches.
B. Cubic inches.
C. Square feet.
D. Cubic feet.
11. When using a MIG welder, ______is controlled by the speed of the wire feeder.
A. Voltage.
B. Amperage.
C. Polarity.
D. Spatter.
12. When the electrode wire gets knotted up at the feed rollers it is called:
A. Winding.
B. Tangling.
C. Birds nesting
D. De-spooling.
13. Mig welding is also known as:
A. SMAW
B. GTAW
C. OFC
D. GMAW
14. What is one of the most common problems with MIG welds?
A. Lack of fusing.
B. Excessive penetration.
C. Under fill.
D. Too many sparks.
15. A steel containing .40% carbon would be classified as:
A. Low carbon steel
B. Medium Carbon steel
C. High carbon steel
D. Very high carbon steel
Large engine
16. A 12 volt battery connected in parallel?A. Doubles VoltageB. Doubles CCA
17. A 12 volt automotive battery has _____ cells.
A. 1 C. 6
B. 2 D. 12
18. Firing order of a 6 cylinder engine is:
A. 153246.C. 153624.
B. 156243.D. 164253.
19. Convert 11/32to decimals. Nearest 10,000th.
A. 3.4375
B. .43475
C. .3438
D. .4348
20. Oil rating 10W30 the W refers to what:
A. Winter
B. Weight
21. Constant pressure variable flow is the definition for:
A. Closed center hydraulic system
B. Open center hydraulic system.
22. What is the square inch of a 4 inch cylinder?
A. 16.
B. 4.5
C. 12.56
D. 3.14
23. What is my PSI if my pressure gauge reads 280 bars?
A. 4860
B. 4200
C. 4060
D. 4040
24. When the intake valve is open and the piston is moving down, air and diesel fuel is drawn into the cylinder on a diesel engine equipped with a turbocharger.
A. True or
B. False
25. The camshaft turns twice when the crankshaft makes one turn on a 4 stroke diesel engine.
A. True
B. False
26. Rating of diesel fuel?
A. Cetane
B. Octane
C. Butane
D. Methane
27. Both intake and exhaust valves are open at the same time on a 4 stroke engine at:
A. End of power and beginning of exhaust stroke
B. End of intake and beginning of compression stroke
C. End of exhaust and beginning of intake
D. End of compression and beginning of power stroke
28. A diesel engine intercooler cools?
A. Water.
B. Diesel fuel.
C. Air entering the turbocharger
D. Air leaving the turbocharger
29. What controls the cooling system pressure?
A. Water pump.
B. Water temperature.
C. Cooling system cap.
D. Thermostat.
30. An exhaust or intake valve installed below the head surface is called what?
A. Recession.
B. Protrusion.
Concrete, Masonry and Plumbing
31. The thinnest copper pipe is rated:
A. M
B. L
C. K
D. W
32. A properly soldered copper joint, using lead-free solder, is how strong when compared to the pipe itself.
A. Weaker
B. Equal
C. Stronger
D. Twice as strong
33. Galvanized steel pipe has a coating of ______on the outside to prevent rusting.
A. Nickel
B. Tin
C. Magnesium
D. Zinc
34. Wood plates are fastened to the top foundation walls with ½” anchor bolts. They are spaced not more than ______feet apart.
A. 2
B. 6
C. 8
D. 4
35. Cross-linked polyethylene plastic is used for hot and cold water supply lines. It is also called ______.
A. CPVCB. ABSC. PEXD. PVC
36. All plumbing pipes are sized according to their inside diameter.
A. True
B. False
37. When soldering a copper tubing joint, a flux is applied to ______.
A. Remove dirt
B. Prevent oxidation
C. Etch the metal
D. Prevent ionization
38. If air-entrained ready mix is ordered, the mixture is:
A. Lighter and does not require rebar
B. Lighter and is used where soils have high water tables
C. Stronger due to higher tensile strength
D. Stronger and more resistant to acid, salt, and frost
39. A typical concrete mix will weigh about ______pounds per cubic foot.
A. 100
B. 120
C. 150
D. 180
40. Foundations should extend about ______above finished grade.
A. 8 inches
B. 16 inches
C. 24 inches
D. 32 inches
41. Cement for producing concrete is normally bagged in one cubic foot which weighs ______pounds.
A. 100
B. 94
C. 86
D. 90
42. Standard concrete blocks are normally laid with a mortar joint that is ______thick.
A. 5/8”B ¼”C. ½”D. 3/8”
43. A standard number 4 reinforcing bar has a diameter of:
A. ¼”
B. 3/8”
C. ½”
D. 5/8”
44. When calculating the loads on building foundations and footings, the snow on the roof of a building would be considered a ______load.
A. Live
B. Variable
C. Dead
D. Temporary
45.Lightweight concrete blocks usually have a much lower ______factor than a standard concrete block. A. L B. U C. M D. R
Planters
46. What is the square feet in an acre?
A. 35,640
B. 64,053
C. 43,560
D. 56,043
47. What is 1/1000th of an acre?
A. 56.04.
B. 35.64.
C. 64.05.
D. 43.56.
48. What is the row length of 1/1000th of an acre with a row spacing 22 inches?
A. 23.76
B. 17.42
C. 1.833
D. 2.5
49. What is the seed to seed spacing if our population is 33,000 with a row spacing of 30 inches?
A. 7.560 inches
B. 5.5670 inches
C. 6.336 inches
D. 3.3245 inches
50. What is my seed population if I count 29 seeds in 1/1000th of an acre with the row spacing of 22 inches?
A. 33,000
B. 29,000
C. 30,000
D. 28,000
51. What can cause a W bottom seed trench?
A. The double disk openers need adjusting.
B. The double disk openers are too small a diameter.
C. The double disk openers are not touching.
D. All the above.
52. A planter which uses vacuum to operate the metering unit is equipped with a gauge to read vacuum. What does the gauge read?
A. PSI
B. PSIG
C. Inches of water.
D. Vacuum pressure.
53. What is 1/50th of an acre?
A. 871.2
B. 435.6
C. 4.35
D. 87.12
54. The operator needs to replace the left double disk opener moving in the direction of travel. Is the bolt that holds the double disk opener left hand or right hand threads?
A. Right hand threads.
B. Left hand threads.
55. Adjust the finger corn metering unit tighter when planting smaller corn seed?
A. False
B. True
56. After the planting season is complete the operator needs to store the vacuum corn meter unit. The following is steps to follow to store the metering unit. Find the one that does not belong.
A. Remove the cover to relieve pressure on the seal.
B. Remove the metering plate and store in a cool dry place.
C. Completely wash the metering unit with soap and water.
D. After washing off the units completely cover with engine oil to prevent rust.
57. Seed size determines the following. Identify the one that does not belong.
A. Vacuum setting.
B. Finger pressure adjustment.
C. Planter speed MPH.
D. Size of seed plate used.
58. The primary function of a planter is: Identify which one does not belong.
A. Make the seed trench
B.Till the seed bed area
C. Cover the seed trench
D. Firm the seedbed
E. Meter the seed
59. The planter tire is underinflated this will cause the planter plant more or less corn seed.
A. More.
B. Less
60. IH air planter (not Case IH) uses air vacuum or air pressure?
A. Pressure
B. Vacuum
Land Measurement, Leveling and GPS/GIS Conservation.
61.In land surveying a true north south line is called a:
A. Base line
B. Principle meridian
C. Latitude line
D. Longitude line
62. In the metric system the standard unit of land area is the hectare. A hectare is ______square meters.
A. 5,000
B. 10,000
C. 15,000
D. 43,560
63. To convert from hectares to acres multiply hectares by ______.
A. 2
B. .4047
C. 2.47
D. 3
64. A running account of rod readings is called:
A. A surveyor’s record
B. Field notes
C. Land records
D. Legal data
65. What number of satellites is needed to find a position?
A. 6
B. 8
C. 23
D. 3
66. A permanent reference point for which the elevation is known is called a:
A. Foresight
B. Back sight
C. Benchmark
D. Corner marker
67. If a farmer owns the NW quarter of the NW quarter of section 8, he owns how many acres?
A. 160 B. 40C. 320D. 640
68. The farming practice of tilling across a slope following its elevation is referred to as ______farming.
A. ridge till
B. contour
C. elevation
D. no till
69. Each township is divided into 36 equally sized sections numbered 1 – 36 beginning in the ______corner:
A. Northeast
B. Northwest
C. Southwest
D. Southeast
70. Contour lines indicate which of the following:
A. A ridge line
B. A uniform slope
C. A series of points of equal elevation
D. A line for terracing
71. GPS accuracy is based on?
A. Time
B. Temp
C. Distance
D. Sound waves
72. RTK accuracy systems do not use satellites only base stations?
A. True B. False
73. Water erosion only occurs on slopes greater than 8 percent
A. TrueB. False
74. Surface creep is when water moves soil from high to low elevation.
A. TrueB. False
75. How many satellites are in orbit over the earth?
A. 48 B. 24 C. 36 D. 6
Electrical
76. A motor’s nameplate provides information about all of the following except______.
A. RPM
B. Class rating
C. Temperature drop
D. Voltage
77. The starting windings for electrical motors are wired in ______with the running windings.
A. series B. parallelC. services-parallel D. None of the above is correct.
78. Which of the following is not a protective enclosure for an electric motor?
A. Drip-proof
B. Splash proof
C. All of the above are protective enclosures
D. Explosion proof
E. Totally enclosed
79. A permanent split capacitor motor is best starting
A.Low starting torque
B. High starting torque
C.Medium starting torque
D. A gasoline engine
80. When disassembling a motor which of the following should be done first?
A. Mark the end bells of the motor to insure they get placed back the same
B. Remove all end-bell bolts
C. Pull the rotor from the stator
D. Blow dirt out of the housing
81. Which of the following electric motors is best suited for three-speed operation?
A. Series motor B. split phase start, induction run motor
C. Capacitor start, induction run motor D. Permanent-split capacitor motor
82. The type of motor enclosure that should be used to move feed for a confinement livestock facility.
A. Drip proof
B. Splash proof
C. Open
D. totally enclosed
83. Which motor does not have starting windings?
A. Split Phase Start Induction Run
B. Capacitor Start induction Run
C. 3 Phase
D. Capacitor Start Capacitor Run
84. What would an electric motor with two visible capacitors be classified as?
A. Split phase start, induction start B.Capacitor start, induction run
C. Three value capacitor motor D.Capacitor start, capacitor run
85. Squirrel cage is a term used to describe:
A. The shaft
B. The frame
C. The windings
D. The rotor
86. Anti-friction bearings for electric motors can be:
A. Ball
B. Roller
C. Needle
D. All of the above
87. Which of the following motors use brushes to transmit power to the rotor?
A. Universal
B. Capacitor start induction run
C. Split capacitor
D. Shaded pole
88. Ambient air temp refers to which of the following?
A. The temperature of the medium which surrounds the motor.
B. The temperature of the air inside the housing.
C. The temperature at which the motor will fail.
D. The temperature required for bi-metallic strip to separate from each other.
89. The stationary electromagnet in an electric motor is called a:
A. Stator
B. Rotor
C. Armature
D. None the above
90. Repulsion start induction run motors have a rotor, commutator, and:
A. Brushes
B. Accumulator
C. Capacitor
D. Both a and c.