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First Semester Finals 2016 > Ag Mechanics > Flashcards

Ag Mechanics Flashcards

1
Q

A worker in a shop lifts his protective eyewear to inspire his work. A metal fragment from a nearby work station flies into his eye causing injury. What is the chance that the fragment would strike his eye

A

Accident

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2
Q

What is a common example of an accident associated with power, structural, and technical systems.

A

Falling object

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3
Q

What is an example of a hazard

A

spill

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4
Q

In an ag shop which is the appropriate color to use for information signs such as “out of order”

A

Yellow

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5
Q

What is the highest priority regarding work done in agricultural power, structural, and technical systems

A

Safty

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6
Q

Which is the first step in the event of a spill in an agricultural shop

A

Tell teacher

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7
Q

Why is it important for business owners to promote safety in the workplace

A

Safety regulations

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8
Q

What is the primary system of internal combustion engines commonly known as

A

Compression systems

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9
Q

WHy must internal combustion engines have a method for achieving ignition in their cylinders

A

To start the combustion

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10
Q

What are the components of the operating system

A

Air intake system, Fuel system, exhaust system, lubrication system, starting system

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11
Q

List the accessory systems of an engine

A

Power steering, air intake system, electrical

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12
Q

what is the overall goal in the compression system

A

To effectively compress air to increase the potential energy resulting from the combustion of the fuel

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13
Q

what is the downward movement of the piston

A

Intake stroke

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14
Q

why should piston rings keep a secure and solid fitting on the top of the piston

A

To keep the liquids (oil) inside

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15
Q

What is the device that closes the valve and holds it open at the appropriate times

A

Valve spring

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16
Q

What device opens and closes the valves in an enguin

A

Camshaft

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17
Q

What is a component of both the air intake system and fuel system

A

Carburetor

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18
Q

What system plays a major role in heat transfer

A

Cooling system

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19
Q

___ is a part of the liquid cooling system that functions by transferring heat and is a cooling and storage area for the liquid combination of water and antifreeze

A

Radiator

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20
Q

What is the most common problem when working with engines

A

Lack of knowledge

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21
Q

what should be used to protect against falling objects

A

Hard Hat

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22
Q

The piston operated inside the

A

Cylinder block

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23
Q

What is a device that allows the fuel mixture to enter

A

Intake valves

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24
Q

What is a function in engine oil

A

Reduce wear on moving parts

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25
Q

What is the first step in disassembling an engine

A

Drain all the fluids

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26
Q

During reassemble of the engine, what should be installed in the crankshaft

A

Some sort of shaft to keep the camshaft from moving

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27
Q

If a machine is going to be stored for a long time then which of the following practices should be performed

A

Should be winterized

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28
Q

What is the biggest difference between power tools and hand tools

A

Power tools use electricity

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29
Q

Which tool should be the best selection for the purpose of cutoff work, including squaring boards, cutting them to length, and cutting then at angles or bevels

A

Saw

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30
Q

what is a tool that uses a motor to turn either a metal blade with teeth or an abrasive disk to cut through materials

A

Circular saw

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31
Q

which plumbing system brings fresh water into a structure from city water main or private well.

A

Main water line

32
Q

Why should plumbing fixtures be near each other

A

To increase efficiency and reduce cost

33
Q

Faucets, toilets, showers, washing machines, and water heaters can be classified as

A

Fixtures

34
Q

What should be consulted before any plumbing work is performed

A

Local plumbing codes

35
Q

What device is designed to stop water flow if needed

A

Shut off valve

36
Q

If a home owner needed to measure how much waste is being used than what device would be used

A

Water meter

37
Q

Where is the hot water supply line routed before it arrives to fixtures

A

on the left

38
Q

How can pressure loss occur within water supply lines

A

A leak, size of piping, height of buildings, length of piping

39
Q

If a home is using a private well for its water source then what maintains the pressure within the system

A

Water pump

40
Q

Hot water lines should be placed on the ____, and cold water line on the ____, when diagramming and installing supply lines

A

Left right

41
Q

What is a loud noise in a supply line caused by a volume of water that suddenly stops moving

A

Water hammer

42
Q

What can be added to a supply line to provide a cushion of air to absorb the water

A

Air chamber

43
Q

What is the curved section of a pipe near each fixture that holds water to prevent sewage gasses from entering the structure

A

Traps

44
Q

What is something worn to minimize risk on the job

A

PPE

45
Q

When lifting heavy objects what should a person do

A

Lift with legs

46
Q

What is the most common plumbing problem

A

Dripping faucets, Leaky pipes, Running toilets

47
Q

What is the smallest unit of an element

A

Atoms

48
Q

As electrons move around the nucleus, how can this area be described

A

In rings or shells / Valence rings

49
Q

What is the flow of electrons from atom to atom in a conductor

A

Electricity

50
Q

Where does to flow of electrons take place

A

Outer valence ring

51
Q

What can copper, aluminum, silver, and gold have in common

A

Good conductors

52
Q

What is a good semiconductor

A

Silicone

53
Q

What theories is the acceptable model of electrical current flow

A

Electron theory

54
Q

One cycle of electricity per second is referred to as

A

Hertz

55
Q

____ are materials that contain electrons that do not share or move freely

A

Insulators

56
Q

What are primary particles with no electrical charge

A

Neutrons

57
Q

___ is the pressure in a circuit that causes the electrons to flow through a conductor

A

Voltage

58
Q

What is the amount of electrical current flowing past a point in a circuit

A

Amperage

59
Q

Which of the following is an instrument used to measure amperage in a circuit

A

Ammeter

60
Q

What is a property of any material that opposes the flow of electricity

A

Resistance

61
Q

What has a low resistance

A

Conductors

62
Q

There are 20 amps of current flow in a circuit with a total resistance of 8 ohms then what would be the voltage source

A

160 volts

63
Q

What is the movement of a force through a distance

A

worlk

64
Q

How much does one kilowatt equal

A

1000 watts

65
Q

How is electricity sold

A

by the Kilowatt-hour

66
Q

If .96 amps of current flows through a 120 volt circuit how many watts of electrical power are being used

A

115.2 watts

67
Q

why is copper preferred over aluminum when wiring most branch circuits

A

better conductor

68
Q

What is used to regulate cooling and heating systems

A

Thermostat

69
Q

Which of the following are devices used when a convenience outlet is in the same device box with a switch

A

Breaker box

70
Q

what is used to trace circuits and to test fuses and lines

A

Circuit Breaker

71
Q

A ____ is one wire connected to another wire

A

Spliced Wire

72
Q

If cutting wire, stripping conductors and attaching to terminals are required then what tool should be used

A

Wire strippers

73
Q

How does the electrode holder protect the welder

A

So we dont make electrical contact

74
Q

What causes the electric energy to be transformed into heat

A

Kinetic Energy

75
Q

If electrons flow in one direction then what is this situation referred to as

A

DC or Direct Current

76
Q

When the electrons flow from the electrode to the workpiece, It is

A

Arc Welding

77
Q

What do the first 2 digits of a 4 digit number on an electrode indicate

A

Minimum Tensile Strength

First Semester Finals 2016 (4 decks)

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