2006 State Agricultural Mechanics Written Examination



2010 State Agricultural Mechanics Written Examination

Directions: Place your name, chapter, and contestant number on the accompanying scantron form that you will receive from the test administrators. Read each of the following multiple-choice items and the possible answers carefully. Mark the letter of the correct answer on your answer sheet (scantron form) as instructed by the test administrators. PLEASE MAKE NO MARKS ON THIS TEST.

1. Which is MOST true of a Bourdon tube?

a. Consist of a circular tube that straightens as internal fluid pressure increases.

b. Funnel shape decreases the fluid pressure as fluid passes through it.

c. Funnel shape increases the fluid pressure as fluid passes through it.

d. Used for taking soil samples

Agricultural Mechanics, 4th Edition, page 520

2. The item identified by the arrow in the picture of the table saw is used to:

[pic]

a. Keep the board against the ripping fence.

b. Keep the board from closing once it has passed through the blade.

c. Push sawdust from the cut wood down below the table.

d. Stop the blade in an emergency.

Agricultural Mechanics, 4th Edition, page 192

3. Which metal can be tempered?

a. Cast iron

b. Galvanized steel

c. Tool steel

d. Wrought iron

Agricultural Mechanics, 4th Edition, page 139

4. What additional reason other than “Sandy” textured surface layer will automatically place a soil in an “s” subclass?

a. Sandy subsurface layer

b. Severe erosion

c. Steep slope

d. Very shallow depth to limiting layer

Handbook for Land Judging in North Carolina, 5th Edition

5. What is the pipe fitting displayed in both pictures below?

[pic] [pic]

a. Coupling

b. 45° Pipe elbow

c. 90° Pipe elbow

d. Union

Agricultural Mechanics, 4th Edition, page 492

6. Which paint would be the BEST product to use to paint a milking parlor?

a. Epoxy

b. Flat latex

c. Semigloss enamel

d. Semigloss latex

Agricultural Mechanics, 4th Edition, page 370

7. Which is required for the safe operation of any electrical motor with a metal housing?

a. Built in breaker is part of the motor

b. Has a three-prong grounding plug

c. Has two wires in the power cord

d. Must have a 240-volt plug

Agricultural Mechanics, 4th Edition, page 173

8. Which wire can be buried directly in the soil?

a. T

b. THHN

c. TW

d. UF

Agricultural Mechanics, 4th Edition, page 428

9. Joey is building a bookcase and wishes to hide the 1/4" plywood he is using on the back from being seen from the side view. Which joint will allow him to install the back so that it will not be seen when looking at the bookcase from the end or side?

a. Butt

b. Dado

c. Dovetail

d. Rabbit

Agricultural Mechanics, 4th Edition, page 113

10. When one bends a piece of round metal to form a small circle, the resulting piece is called a/an:

a. Angle

b. Dot

c. Eye

d. Pipe

Agricultural Mechanics, 4th Edition, page 146

11. Camber just installed a new bit into her cordless drill, but the bit is not cutting. What should be her FIRST action?

a. Check the drill reversing switch to see if the bit is turning counterclockwise

b. Get a mill file and touch up the cutting edge of the each twist on the bit

c. Pull her safety glasses off and check the speed of the bit

d. Return the bit to the store and call the manufacturer of the bit

Small Gas Engines, 8th Edition, page 174

12. If the water in a toilet bowl is running continuously, what should be the FIRST item that is checked as the cause of the problem?

a. Chain caught in the flush valve that prevents proper closing

b. Open water valve on water line running to the toilet

c. Tank bolts and washers holding the flush tank to the tank bowl

d. Wax ring seal under the base of the toilet bowl

Agricultural Mechanics, 4th Edition, page 496

13. What is the nailing procedure when a nail is driven at an angle near the end of one piece of wood and into the face of another piece?

a. Clinched

b. End

c. Flat

d. Toe

Small Gas Engines, 8th Edition, page 120

14. Which adhesive material comes as two separate materials that must be mixed?

a. Aliphatic resin glue

b. Contact cement

c. Epoxy

d. Urea

Agricultural Mechanics, 4th Edition, page 124

15. What is the MOST likely land use practice presented in the picture below?

[pic]

a. Drainage ditch

b. Fish pond

c. Lagoon

d. Septic tank

16. To bleed the lines on an oxyacetylene cutting torch, one must FIRST:

a. Close the acetylene and oxygen cylinder valve.

b. Open the oxygen and acetylene torch valve.

c. Open the acetylene and oxygen cylinder valve.

d. Turn the regulator handles clockwise to allow gas flow.

Agricultural Mechanics, 4th Edition, page 285

17. Allison has added fresh gasoline to her lawn mower. However, it will not start when she pulls on the crank rope. What is the FIRST thing she should do in troubleshooting the engine?

a. Check the spark plug

b. Clean the air cleaner

c. Examine the throttle and choke shafts

d. Ream valve guides and replace seals

Agricultural Mechanics, 4th Edition, page 414

18. Which is true of an electric motor with a sleeve bushing?

a. Has hardened steel balls in a cage to keep the shaft centered

b. Never needs lubrication with oil

c. Requires lubrication with small amounts of oil

d. Will withstand more shaft pressure than engines with needle bearings

Agricultural Mechanics, 4th Edition, page 463

19. What is the BEST procedure to extinguish a fire using a fire extinguisher?

a. Discharge the extinguisher with a series of short burst over the top of the fire

b. Move 6' - 10' from the fire and direct the extinguisher nozzle at the base of the fire

c. Stand back 10' from the fire and tilt the extinguisher nozzle slightly up to release foam

d. Toss the fire extinguisher into the fire and quickly leave the location

Agricultural Mechanics, 4th Edition, page 36

20. Which preservative is recommended for treating wood tables in a greenhouse?

a. Acid Copper Chromate

b. Ammoniacal Copper Arsenate

c. Creosote

d. Pentachlorophenol

Agricultural Mechanics, 4th Edition, page 560

21. Which causes the GREATEST concern for pesticides leaching down into the underground water supply?

a. Clayey subsurface layer

b. None to slight erosion

c. Sandy subsurface layer

d. Strongly sloping terrain

Handbook for Land Judging in North Carolina, 5th Edition

22. Which stroke of the four-cycle engine is shown in the picture below?

[pic]

a. Compression

b. Exhaust

c. Intake

d. Power Agricultural Mechanics, 4th Edition, page 388

23. Which is used to reinforce concrete slabs?

a. Carriage bolts

b. Nails

c. Sand

d. Welded wire

Agricultural Mechanics, 4th Edition, page 540

24. Matt is laying out a gable-roof rafter. How can he determine the run for the roof?

a. Divide the span by the rise

b. Measure the distance from the bird’s mouth to the ridge piece

c. Measure the span from plate to plate and divide by two

d. Multiply the span times the rise

Agricultural Mechanics, 4th Edition, page 571

25. If a rough 2 x 8 board is dressed or planed, the resulting size will be:

a. 1 ½ x 7

b. 1 ½ x 7 ¼

c. 1 ¾ x 7 ½

d. 1 ¾ x 7 ¾

Agricultural Mechanics, 4th Edition, page 109

26. Which joint is illustrated by the picture below?

[pic]

a. Butt

b. Dado

c. Dovetail

d. Rabbit

Agricultural Mechanics, 4th Edition, page 118

27. Which is a dry powder made by burning limestone and clay and then grinding and mixing to an even consistency?

a. Finishing lime

b. Mortar mix

c. Portland cement

d. Quick setting concrete

Agricultural Mechanics, 4th Edition, page 534

28. What is an advantage of a random orbital sander?

a. Cuts deeper than a belt sander

b. Cuts faster than a disc sander

c. May be used to sand across the grain

d. Most heavy duty sander available

Agricultural Mechanics, 4th Edition, page 178

29. Which procedure would be needed to time the opening of breaker points?

a. Adjust the air gap between the trigger module and the flywheel trigger projection

b. Apply lapping compound to valve face and spin the valve inside seat

c. Measure the piston ring gap for the size of cylinder

d. Set the piston at the correct distance before top dead center

Small Gas Engines, 8th Edition, page 255

30. What is the standard amount of piston ring end gap needed per inch of cylinder diameter?

a. .004"

b. .006"

c. .010"

d. .012"

Small Gas Engines, 8th Edition, page 294

31. Which would be the easiest and quickest building to erect to house machinery?

a. Concrete block

b. Pole

c. Rigid-frame

d. Wood-frame

Agricultural Mechanics, 4th Edition, page 563

32. Which electrode size requires the highest amperage?

a. 1/16

b. 3/32

c. 1/8

d. 5/32

Agricultural Mechanics, 4th Edition, page 337

33. What gauge of aluminum wire is needed to carry the same amperage load as # 14 copper wire?

a. #10

b. #12

c. #14

d. #16

Agricultural Mechanics, 4th Edition, page 337

34. The recommended viscosity grade for motor oil for a Briggs and Stratton engine that is being operating in temperatures above 40°F is SAE:

a. 5W.

b. 5W-20.

c. 10W.

d. 30.

Small Gas Engines, 8th Edition, page 186

35. Which carpenter’s square has tables used to lay out rafters?

a. Combination

b. Framing

c. Outside caliper

d. Try

Agricultural Mechanics, 4th Edition, page 430

36. What symbol is used to identify a fire extinguisher suitable for use on electrical fires?

a. Blue circle

b. Green triangle

c. Red square

d. Yellow star Agricultural Mechanics, 4th Edition, page 47

37. Jenny suffered a severe electrical shock while working in the shop and needs Cardiopulmonary resuscitation. In order to save her life, CPR must be started within:

a. 1 minute.

b. 4-6 minutes.

c. 15 minutes.

d. 30 minutes.

Agricultural Mechanics, 4th Edition, page 51

38. Which is the BEST material to use to prevent forms from sticking to the concrete?

a. Fat

b. Oil

c. Paint

d. Wax

Agricultural Mechanics, 4th Edition, page 206

39. Which is the MOST likely cause of burn through when Mig-welding?

a. Gun speed is too fast

b. Gun-to-base metal distance is too far

c. Rust is on the base metal

d. Welding current is too high

Agricultural Mechanics, 4th Edition, page 353

40. How does a steam cleaner differ from a high-pressure washer?

a. Steam cleaners do not use chemical solutions and high-pressure washers do

b. Steam cleaners are stationary and high-pressure washers are portable

c. Steam cleaners have a burner in addition to a pump and high-pressure washers only have a pump

d. Steam cleaners are effective at cleaning grease from equipment, but high-pressure washers are not

Agricultural Mechanics, 4th Edition, page 363

41. Why should an airless spray gun never be pointed at one’s body during the painting process?

a. Accidental discharge will result in air being forced into the pores of the skin

b. Accidental discharge will result in paint being forced into the pores of the skin

c. Nozzle may become clogged with fiber from one’s clothing

d. Nozzle tip may be knocked out of adjustment and result in poor spray pattern

Agricultural Mechanics, 4th Edition, page 375

42. Which is true of traveler wires?

a. Bare wires used with a wirenut to connect the ground wire to the device

b. Colored wires that connect the breakers to the neutral bar in the service entrance panel

c. Insulated wires that connect the service panel to the entrance cables

d. Pair of wires attached to the light-colored screws on three-way switches

Agricultural Mechanics, 4th Edition, page 440

43. Which tap should be used FIRST when tapping threads to the bottom of a blind hole?

a. Bottoming

b. Countersink

c. Plug

d. Taper

Agricultural Mechanics, 4th Edition, page 157

44. Which surface requires a paint roller with a longer nap to ensure good coverage?

a. Concrete block

b. Dry wall

c. Sheetrock

d. Shelving board

Agricultural Mechanics, 4th Edition, page 374

45. Which is a common brazing filler metal used for copper?

a. BAg, silver alloy

b. BAISi, aluminum silicon

c. BAu, gold base alloy

d. BNi, nickel alloy

Agricultural Mechanics, 4th Edition, page 300

46. How many scales are found on a triangular scale?

a. 3

b. 4

c. 5

d. 6 Agricultural Mechanics, 4th Edition, page 224

47. The wood removed by a saw blade leaves an opening called a:

a. Girder.

b. Joint.

c. Kerf.

d. Splice. Agricultural Mechanics, 4th Edition, page 106

48. Which is true of quartersawn lumber?

a. Also called slash sawn

b. Grain appears to be wide apart

c. Less tendency to warp or twist

d. Used for most structural grade lumber

Agricultural Mechanics, 4th Edition, page 104

49. Wires in electrical boxes must be connected to each other by:

a. Clips

b. Electrical tape

c. Solder

d. Solderless wire nuts

Agricultural Mechanics, 4th Edition, page 521

50. Which land class presents the GREATEST risk for groundwater contamination?

a. Class I

b. Class IIe

c. Class IIs

d. Class IIw

Handbook for Land Judging in North Carolina, 5th Edition

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