EXAM K

Question 1

In designing a rice thresher, the most important factors affecting
threshing efficiency is
a. rpm of the cylinder
b. Peripheral speed of the cylinder
c. Diameter of the cylinder
d. None of the above

Question 2

An insecticide that kills insects when insects suck on plant tissues.
a. Contact
b. Stomach
c. Systemic
d. All of the above

Question 3

A hitch system for a tractor suitable for large, heavy implement for
trailer.
a. Three-point hitch system
b. Drawbar hitch system
c. Semi-mounted system
d. All of the above

Question 4

In an ideal Otto engine, the combustion of fuel occurs at :
a. constant pressure
b. constant temperature
c. constant volume
d. constant enthalpy

Question 5

It is the power developed by the engine of a tractor which is available for pulling, dragging or similar tractive effort.
a. belt horsepower
b. brake horsepower
c. drawbar horsepower
d. indicated horsepower

Question 6

One way of increasing engine power is to force more air into the cylinder
so that more power can be produced from each power stroke. This process
which uses a type of air compression device powered by the engine
crankshaft is called:
a. turbocharging
b. supercharging
c. power charging
d. air charging

Question 7

This fuel is made by partial combustion of carbonaceous substances like coal, wood, charcoal, sawdust and other similar materials in an atmosphere of air and steam. It is a mixture of carbon monoxide, hydrogen, methane, nitrogen and carbon dioxide.
a. gasohol
b. producer gas
c. natural gas
d. straight-run fuel

Question 8

It is a toxic chemical with chemical formula CH3OH. Drinking even small amounts can cause blindness. It is used on a limited basis to fuel internal combustion engines, mainly by virtue of the fact that it is not
nearly as flammable as gasoline. It is harder to ignite than gasoline and produces just one-eighth of the heat upon burning. It is also called wood alcohol.
a. ethanol
b. methanol
c. isopropyl alcohol
d. gasohol

Question 9

It is the process of combining the proper ratio of oxygen with a gaseous
form of a fossil fuel so it can combust. It usually involves all these
stages, from vaporizing a liquid fuel to letting it mix with air and
finally moving the mixture to where it can be burned.
a. oxygenation
b. carburetion
c. fuel injection
d. fuel induction

Question 10

It is a device used to reduce the toxicity of emissions from an
internal combustion engine. It works by providing an environment for a
chemical reaction wherein toxic combustion by-products are converted to
less-toxic substances.
a. muffler
b. header
c. turbocharger
d. catalytic converter

Question 11

It is the ratio of the actual weight of fuel inducted by the engine during the intake stroke to the theoretical weight of air that should have been inducted by filling the piston displacement volume with air at
atmospheric temperature and pressure.
a. volumetric capacity
b. volumetric parameter
c. volumetric efficiency
d. volumetric measure

Question 12

Among the fuels that belong to the paraffin group, this has three carbon
atoms in its molecular structure. It is the main component of LPG.
a. pentane
b. ethane
c. butane
d. propane

Question 12

Cocomethyl ester, also known as biodiesel, is a non-toxic, eco-friendly fuel having similar properties as diesel fuel. The process of transesterifying raw vegetable oil into cocomethyl ester requires the use
of:
a. alcohol
b. oxygen
c. hydrogen
d. carbon dioxide

Question 13

It is the amount paid for hiring equipment and operator services to
perform a certain task.
a. Machine fixed cost
b. Machine variable cost
c. Machine custom cost
d. None of the above

Question 14

In the equation for horsepower, Hp = QxH/3960xEff, Q is pump output in:
a. gallons
b. gpm
c. liters
d. lps

Question 15

A raised ridge left at the center of the strip of land when plowing
started center to center.
a. Back furrow
b. Dead furrow
c. Furrow
d. All of the above

Question 16

Which of the following is not a part of a typical lift pump?
a. inlet valve
b. piston
c. plunger
d. bucket valve

Question 17

What is the probable height of the flame in a step-grate stove with a
power output of 1000 BTU/hr?
a. 41.9 mm
b. 48.9 mm
c. 47.9 mm
d. 45.9 mm

Question 18

Soil cut, lifted, inverted and thrown to one side of the blow bottom is
termed:
a. furrow
b. furrowslice
c. backfurrow
d. Deadfurrow

Question 19

The sequence of events which make up the cycle of operation of an engine
is:
a. I-C-P-E
b. I-P-C-E
c. C-E-I-P
d. P-I-C-E

Question 20

Which of the following do not belong to seeder parts.
a. Furrow opener
b. Metering device
c. Covering device
d. None of the above

Question 21

Which of the following is not a spray nozzle pattern?
a. hollow cone nozzle pattern
b. solid cone nozzle pattern
c. hollow fan nozzle pattern
d fan nozzle pattern

Question 22

Single-axle machine powered by an engine ranging from 3 to 15 hp:
a. 2-wheel tractor
b. compact tractor
c. standard tractor
d. general-purpose tractor

Question 23

Air-cooled engines are equipped with fins to:
a. increase air velocity
b. increase surface area
c. increase air volume
d. a and c

Question 24

Which of the following countries follow the mechanization model of low land area to farmer ratio? a. Thailand b. Philippines c. Malaysia d. Indonesia

Question 25

The ideal air-fuel ratio for using kerosene as an engine fuel is : a. 10:1 b. 15:1 c. 13:1 d. 12:1

Question 26

A hand tool that permits the creation of threads on rods and shafts. a. taps and die b. lathe machine c. tap wrench and tap

Question 27

It is the ratio of the actual weight of fuel inducted by the engine during the intake stroke to the theoretical weight of air that should have been inducted by filling the piston displacement volume with air at atmospheric temperature and pressure. a. volumetric capacity b. volumetric parameter c. volumetric efficiency d. volumetric measure

Question 28

The following tools could be used for lay out work, except__________. a. micrometer b. all of the above c. marking gauge d. none of the above

Question 29

Special nails like concrete nails are usually sold by ______. a. Weight b. Piece c. a and b d. Bags

Question 30

In construction sites, shops and other work places, which should come first? a. Profit b. cost cutting c. Safety d. Breaks

Question 31

Field operating pattern where it has trips that parallel with each other, are incremented successively by the operating width of the implement, and initiated at one boundary and terminated at the opposite. a. Circuitous pattern b. Headland pattern c. Alternation pattern d. None of the above

Question 32

It describes the operation of the implement operation paralleling each land’s boundaries and is commonly describes as “going around the field.” a. Circuitous pattern b. Headland pattern c. Alternation pattern d. None of the above

Question 33

It is sometimes used in processing established row crops and a modification of continuous pattern. a. Circuitous pattern b. Headland pattern c. Alternation pattern d. None of the above

Question 34

An angle of the plow in reference to the direction of travel of the plow. a. Tilt angle b. Disk angle c. All of the above d. None of the above

Question 35

A device which connects or disconnects engine crankshaft to the transmission box or driven machine. a. Differential gear b. Clutch c. Actuator d. None of the above

Question 36

Domesticated animals used as power for agriculture. a. Dairy animals b. Draft animals c. Game animals d. None of the above

Question 37

Power available on human for useful work. a. 0.1 hp b. 0.5 hp c. 0.3 hp d. None of the above

Question 38

A person is doing a work for 4 hours, what is the power developed by the person? a. 0.09 hp b. 0.13 hp c. 0.15 hp d. None of the above

Question 39

A device that converts electricity to mechanical power. a. Rotor b. Generator c. Motor d. None of the above

Question 40

A device that converts electricity from sunlight. a. Windpump b. Photovoltaic c. Generator d. None of the above

Question 41

Wind machine that is used for lifting water. a. Aeropump b. Generator c. Wind turbine d. Windpump

Question 42

Power generated from falling water. a. Hydro power b. Biomass power c. Wind power d. None of the above

Question 43

The stirring wheel of the tractor can be found at a. In front b. At the rear c. At the operator’s seat d. None of the above

Question 43

Vehicle designed to pull, propel, and supply power to operate machinery used in agricultural operation. a. Agricultural Tractor b. Automobile c. Payloader d. None of the above

Question 44

A substance that is added to the tractor for the purpose of changing traction and stability. a. Ballast b. Cage wheel c. Plow d. Hydraulic lift

Question 45

Power drive that can be found at the rear of the tractor to propel power implements and stationary machines. a. Power take off drive b. Hydraulic system c. Differential gear d. None of the above

Question 46

It is the minimum vertical distance between the soil surface and a potentially obstructing machine element. a. Vertical clearance b. Machine height c. Ground clearance d. All of the above

Question 47

Angle in vertical plane perpendicular to the direction of travel between the tool axis and the soil surface. a. Tilt angle b. Side angle c. Lift angle d. None of the above

Question 48

Standard rpm of a tractor PTO drive. a. 600 rpm b. 200 rpm c. 540 rpm d. None of the above

Question 49

It is the part of the moldboard plow that receives the furrow slice from the share and turns to break, crush, and pulverize the soil. a. Share b. Shin c. Moldboard d. All of the above

Question 50

The part of the moldboard plows which is used to cut the soil. a. Share b. Shin c. Moldboard d. All of the above

Question 51

It is a part of the plow bottom which helps to counteract the side pressure exerted by the furrow slice. a. Shin b. Landside c. Share d. None of the above

Question 52

A type of implement which is directly attached to the tractor and its power lift is dependent upon the tractor engine for its general operation. a. Semi-integral b. Integral-mounted c. Trailing or pull d. None of the above

Question 53

A type of implement which is supported by two or three wheels and is hitched to the drawbar of the tractor where it is being pulled. a. Integral-mounted b. Trailing c. Semi-integral d. None of the above

Question 54

A type of plow which is equipped with plow bodies which turns the furrow slice to one side only. a. One-way plow b. Two-way plow c. Two of the above d. None of the above

Question 54

The draft of a plow is dependent on the: a. Size of plow b. Plowing depth c. Type of soil d. All of the above

Question 55

A type of plow which has two sets of bodies mounted symmetrically on a share frame which can be rotated over 180 degrees along the longitudinal axis. a. Reversible plow b. One-way plow c. Lister plow d. None of the above

Question 56

Firing order for 8-cylinder V piston a. 1-6-8-4-3-2-7-5 b. 1-8-7-3-6-5-4-2 c. All of the above d. None of the above

Question 57

Engine mechanical efficiency. a. Brake hp over indicated hp b. Rated hp over indicated hp c. Friction hp over flywheel hp d. None of the above

Question 58

Part of an engine that converts reciprocating motion into rotary motion. a. Crankshaft b. Piston c. Camshaft d. None of the above

Question 59

System of number indicating the ignition quality of diesel fuel. a. Octane rating b. Cetane rating c. Fuel index d. None of the above

Question 60

Twenty-hp engine is equal to. a. 1524.44 kg-m/sec b. 1254.2 kg-m/sec c. 1425.44 kg-m/sec d. None of the above

Question 61

Ten-hp engine is equivalent to a. 7.46 kw b. 76.4 watt c. 0.746 kw d. None of the above

Question 62

A substance that decreases the effect of friction and which is commonly obtained from petroleum products. a. Lubricant b. Gear oil c. Grease d. All of the above

Question 63

This vertical axis windmill has a very low tip speed ratio and power coefficient of less than 0.2. The rotor is usually constructed using a cylindrical tank cut axially into two and installed vertically face to face at an offset position. a. Savonious b. Cretan c. Darrieus d. Multibladed

Question 63

Among the fuels that belong to the paraffin group, this has three carbon atoms in its molecular structure. It is the main component of LPG. a. pentane b. ethane c. butane d. propane

Question 64

Sprayers are used primarily for the application of: a. herbicides b. insecticides c. fungicides d. pesticides

Question 65

Which of the following is not a spray nozzle pattern? a. hollow cone nozzle pattern b. solid cone nozzle pattern c. hollow fan nozzle pattern d. fan nozzle pattern