C Flashcards by Rai Olino

Energy conversion efficiency (percent) of electric motors is:
a. 25 – 30
b. 30 – 36
c. 36 – 50
d. 50 – 90

d. 50 – 90

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Cleaning units for rice husk gasifier to remove gaseous pollutant and
solid particles while cooling the gas at the same time.
a.Cyclone separator
b.Fabric filter
c.Scrubber
d.All of the above

c.Scrubber

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Seed produced by the Seed Production and Health Division form UP and
certified 100% pure by the Seed Quality Control Services of the Bureau of
Plant Industry.
a. Certified Seeds
b. Registered Seeds
c. Foundation Seeds
d. Breeder Seeds

d. Breeder Seeds

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1 cv is equal to _________ watts
a. 735.50
b. 740.12
c. 760.00
d. None of the above

a. 735.50

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It is the percentage ratio of the time a machine is effectively operating
to the total time the machine is committed to the operation.
a. Operating time efficiency
b. Time efficiency
c. Effective time efficiency
d. All of the above

b. Time efficiency

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Materials used to securely join separate parts of an object or structure
are called
a. binders
b. fasteners
c. holders
d. clippers

b. fasteners

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Planter designed to plant seeds in rows and in hills is called
a. row-crop drill planter
b. hill-drop planter
c. solid drill planter
d. broadcaster

b. hill-drop planter

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The most recently developed system of harvesting and threshing of rice is:
a. mechanical harvesting & threshing
b. combining
c. stripping
d. all of the above

c. stripping

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Which of the following agencies does not belong to the Department of
Agriculture?
a. BPRE
b. BPI
c. AMMDA
d. RAEG

c. AMMDA

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Number series assigned to standards on agricultural production machinery:
a.01 - 99
b.101 - 199
c.201 - 299
d.301 – 399

b.101 - 199

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Which of the following statement is true?
a. The velocity of the knife of a reaper is faster than its forward
velocity.
b. The velocity of the knife of a reaper is slower than its forward
velocity.
c. The velocity of the knife of a reaper is the same with the forward
velocity.
d. None of the above

a. The velocity of the knife of a reaper is faster than its forward
velocity.

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The difference between a stripper and a reaper is that
__________________.
a. the stripper cuts the panicle during harvesting
b. the reaper detach the grain during harvesting
c. the stripper detach the grains while the reaper cuts the panicle during
harvesting
d. None of the above

c. the stripper detach the grains while the reaper cuts the panicle during
harvesting

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Heavy-duty type power tiller basically consists of _______ axles?
a. single
b. double
c. triple
d. None of the above

b. double

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Twelve man-days is equivalent to:
a. one man working for 12 hrs
b. three men working for three days
c. six men working for 2 hrs
d. four men working for 3 days

d. four men working for 3 days

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An engine valve arrangement wherein the intake and exhaust valves are
located on one side of the cylinder block.
a. I - head arrangement
b. L- head arrangement
c. X- head arrangement
d. None of the above

b. L- head arrangement

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Hydraulic control level of a tractor are usually located at the
____________.
a. right side of the operator seat
b. left side of the operator seat
c. front of the operator seat
d. None of the above

b. left side of the operator seat

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Drawbar types:
a. Fixed drawbar
b. Swinging drawbar
c. Link drawbar
d. All of the above

d. All of the above

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Acceptable level wheel slip for two-wheel drive tractor on a tilled or
soft soil.
a. 7 - 11%
b. 10 - 15%
c. 16 - 20%
d. None of the above

b. 10 - 15%

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The power required in driving power harrows, rotary tiller, and other
related equipment.
a. Brake horsepower
b. Drawbar horsepower
c. Power takeoff horsepower
d. All of the above

c. Power takeoff horsepower

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Instrument for measuring furnace temperature.
a. Glass bulb thermometer
b. Dial type bimetallic thermometer
c. Thermocouple wire thermometer
d. All of the above

c. Thermocouple wire thermometer

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Which of the following does not belong to the group of positive displacement
pumps?
a. lift pump
b. force pump
c. rotary pump
d. propeller pump

d. propeller pump

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The conventional system of harvesting and threshing of rice in the
Philippines is:
a. manual harvesting and threshing
b. Manual harvesting and mechanical threshing
c. mechanical harvesting and threshing
d. combining

b. Manual harvesting and mechanical threshing

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Amount of power that the manufacturer specified for an engine.
a. Indicated horsepower
b. Brake horsepower
c. Rated horsepower
d. Belt horsepower

c. Rated horsepower

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A device that provides ignition to a gasoline engine.
a. Flywheel
b. Fuel injector
c. Carburetor
d. Spark plug

d. Spark plug

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Device that connects and disconnects power input to the power output. a. Clutch b. Gear c. Pulley d. None of the above

a. Clutch

Compression pressure for small gasoline engine. a. 40 to 70 psi b. 75 to 125 psi c. 150 to 410 psi d. None of the above

b. 75 to 125 psi

The Japanese combine is characterized as: a. low power & hold-on feeding b. low power & throw-in feeding c. high power & hold-on feeding d. high power & throw-in feeding

a. low power & hold-on feeding

This mixture of 90% gasoline and 10% alcohol is used as a fuel for spark ignition engine. a. methyl ester b. ethyl ester c. gasohol d. normal heptane

c. gasohol

This pump uses the energy of a downward-flowing stream of water to lift a portion of the water to a higher level. a. centrifugal pump b. waterwheel c. hydraulic ram d. water turbine

c. hydraulic ram

It is a gasoline fuel additive which helps improves the anti-knocking characteristics of fuels but which has been recently discovered to be dangerous to living beings. a. methanol b. ethanol c. tetraethyl lead d. gasohol

c. tetraethyl lead

A secondary tillage operation which pulverizes, smoothens, and packs the soil during seedbed preparation and also controls weeds. a. Harrowing b. Listing c. Chiselling d. None of the above

a. Harrowing

The power take-off rpm of a lawn mower and garden ride-on tractors. a. 1000 rpm b. 540 rpm c. 2000 rpm d. None of the above

c. 2000 rpm

power machines that cut sheet metals, angle bars, round bars, or square bars by shear action of two moveable blades that are made to move by maximized leverage. a. Sheet metal circular cutter b. metal cutting power saw c. Square shearing cutter d. Power shears

d. Power shears

Bend downward of the point of the share to make the plow penetrate the soil to the proper depth is: a. tilt angle b. disc angle c. horizontal suction d. vertical clearance

d. vertical clearance

Which of the following operation is not done by a stripper? a. cutting of standing crop b. stripping c. cleaning of grains d. conveying of grains to the tank

a. cutting of standing crop

Twelve man-days is equivalent to the output of: a. 3 men X 4 days b. 6 men X 2 days c. 12 men X 1 day d. all of the above

d. all of the above

When heat alone is used to melt and flow metal together, the process is known as _______. a. Soldering b. Pressure welding c. Fusion Welding d. None of the above

c. Fusion Welding

Component parts of a seeder that is used to calibrate the seed metering device. a. Furrow wheel b. Ground wheel c. Support wheel d. All of the above

b. Ground wheel

A central part of a plow where the share, moldboard, and landside are attached. a. Frame b. Frog c. Shank d. None of the above

b. Frog

Engine cooling method. a. air cooled b. water cooled c. air and water cooled d. All of the above

d. All of the above

Seed produced from breeder seeds and distributed to all members of the Seed Net and selected seed producers in every province for further multiplication. a. Certified Seeds b. Registered Seeds c. Foundation Seeds d. Breeder Seeds

c. Foundation Seeds

It is the useful service life of the machine before it becomes unprofitable for its original purpose due to obsolescence or wear. a. Machine economic life b. Machine life span c. Machine service life d. None of the above

a. Machine economic life

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

b. Side angle

Seed produced from Foundation Seed and being distributed to all accredited seed producers for mass production. a. Certified Seeds b. Registered Seeds c. Foundation Seeds d. Breeder Seeds

b. Registered Seeds

Seed produced from the Registered Seed by accredited seed producers and distributed to farmers for commercial production. a.Certified Seeds b.Registered Seeds c.Foundation Seeds d.Breeder Seeds

a.Certified Seeds

Machine operation in which there are two or more machines performing their own respective operation simultaneously. a. Individual operation b. Parallel operation c. Series operation d. None of the above

b. Parallel operation

Machine operation in which there are two or more machines performing their own respective operation in sequence. a. Individual operation b. Parallel operation c. Series operation d. None of the above

c. Series operation

Machine operation in which one or more similar machines are operated as one unit. a. Individual operation b. Parallel operation c. Series operation d. None of the above

a. Individual operation

A type of gas producer which has the ability to gasify wet fuel. a. Updraft b. Down draft c. Cross draft d. Fluidized bed

a. Updraft

The gasification rate of rice hull ranged from a. 90-105 kg/m2-hr b. 110-210 kg/m2-hr c. 210-240 kg/m2-hr d. None of the above

b. 110-210 kg/m2-hr

Rice hull gasifier efficiency normally ranged from a. 50-70 % b. 70-80 % c. 80-90 % d. None of the above

a. 50-70 %

The caloric value of fuel is a.The amount of heat contained by the fuel per unit weight b.The heat needed to burn a certain weight of fuel c.The weight of fuel to be heated d.None of the above

a.The amount of heat contained by the fuel per unit weight

A type of rice husk furnace that burns the fuel while it is being spread in a circular pattern inside the combustion chamber. a. Step grate furnace b. Suspended air furnace c. Cyclone furnace d. All of the above

c. Cyclone furnace

The thermal efficiency of the furnace is the ratio of a. The amount of fuel used to the amount of heat generated during combustion b. The amount of heat generated during combustion to the amount of fuel used c. The amount of heat delivered to the amount of heat available in the fuel used d. None of the above

c. The amount of heat delivered to the amount of heat available in the fuel used

The burning temperature of most agricultural waste a.100-200C b.300-400 C c.500-600 C d.None of the above

b.300-400 C

A high-cetane fueled engine uses a. Diesel as fuel and is difficult to start engine at lower temperature b. Diesel as fuel and is easy to start at higher temperature c. Gasoline fuel and is easy to start at lower temperature d. None of the above

b. Diesel as fuel and is easy to start at higher temperature

High viscosity engine oil is desirable to use because a.Its viscosity changes easily with a change in temperature b.Its viscosity does not change easily with the change in temperature c.Its viscosity changes even without a change in temperature d.None of the above

a.Its viscosity changes easily with a change in temperature

Engine oil having high flash and fire point indicates. a. High boiling point b. High evaporation rate c. High heating value d. All of the above

a. High boiling point

An additive purposely to provide a protective film on bearing surfaces thus preventing any acid to corrode metal parts. a. Anticorrosive b. Antioxidants c. Dispersants d. All of the above

a. Anticorrosive

In order to increase the resistance of engine oil, the formation of certain acidic product that may cause corrosion of certain type of bearing the recommended additive to use is. a.Anticorrosive b.Antioxidants c.Dispersants d.All of the above

b.Antioxidants

Additives to cause carbon particles in the engine to remain in suspension in oil. a. Anticorrosive b. Antioxidants c. Dispersants d. All of the above

c. Dispersants

The burning of portion of fuel in the combustion chamber of an engine at a rate faster than the desired. a. Knocking b. Detonation c. Misfiring d. All of the above

b. Detonation

A device used to measure the quantity of oil in a crankcase. a. Dipstick b. Oil gauge c. Oil stick d. None of the above

a. Dipstick

A device that provides a rich mixture of fuel during high load and lean mixture during under load. a. Carburetor b. Economizer c. Fuel regulator d. All of the above

b. Economizer

When a diesel engine knocks, the trouble is a. The diesel fuel ignition timing is late b. Incorrect type of spark plug c. Incorrect engine lubrication and wrong grade oil d. All of the above

a. The diesel fuel ignition timing is late

The lubrication system of an engine is basically a. To reduce wear and tear of an engine b. To act as complement of the cooling system c. To act seal between the piston and cylinder wall d. All of the above

d. All of the above

When a gasoline engine knocks, the problem is a. The spark timing is too far advance b. Incorrect type of spark plug c. Incorrect type of fuel d. All of the above

a. The spark timing is too far advance

If the engine timing is advance a. The spark plug ignites earlier than the fuel while piston is completing the compression stroke b. The spark plug ignites earlier than the fuel while the piston is at the intake stroke c. The spark ignites earlier than the fuel while moving downward immediately after the power stroke

c. The spark ignites earlier than the fuel while moving downward immediately after the power stroke

It is the act of checking, testing, measuring, repairing and adjusting the engine in order to bring it to the peak efficiency. a. Trouble shooting b. Tune-up c. Timing adjustment d. All of the above

b. Tune-up

The coefficient of traction for wheel-type tractor is highest for a. Concrete road b. Fine sand c. Sandy loam soil d. All of the above

a. Concrete road

The rapid explosion of mixture of fuel and air within the cylinder when ignited by spark plug is in _____. a. Constant volume combustion b. Constant temperature combustion c. Constant pressure combustion d. All of the above

a. Constant volume combustio

The relatively slow burning as the fuel is injected into a highly compressed heated air is. a. Constant volume combustion b. Constant temperature combustion c. Constant pressure combustion d. All of the above

c. Constant pressure combustion

The gross heating value of diesel is a. Higher than gasoline b. Higher than kerosene c. Higher than ethanol d. All of the above

c. Higher than ethanol

Which of the following is true in the operating gasifier for internal combustion engine? a. Only 50 to 70 % of the diesel oil can be replaced by gas producer. b. Gasoline and diesel can be fueled with gas producer. c. The power output of gasoline engine at arbitrary rpm will increase by 30 to 50 % when fueled with producer gas. d. All of the above

c. The power output of gasoline engine at arbitrary rpm will increase by 30 to 50 % when fueled with producer gas. (DAPAT DECREASE)

An injection system used in small stationary diesel engine consisting essentially of a high pressure pump and an injection nozzle. a. Air injection system b. Solid injection system c. Automized injection system d. None of the above

b. Solid injection system

An engine running at a speed of 2000 rpm is classified as 45 a. Low speed engine b. Medium speed engine c. High speed engine d. None of the above

c. High speed engine

A primary tillage operation which manipulates the soil to a greater depth than 300 mm. a. Reservoir tillage b. Deep tillage c. Ridge tillage d. None of the above

b. Deep tillage

A secondary-tillage implements which stirs the soil using multiple number of disk blade arranged on a gang. a. Spike tooth harrow b. Disk harrow c. Two of the above d. None of the above

b. Disk harrow

A trailing harrow that is hitched too high to the drawbar will . . . a. Have too deep penetration b. Have right penetration c. Have too shallow penetration d. None of the above

c. Have too shallow penetration

A kind of chemical used for spraying which form finely divided solid particles when mixed with water. a. Emulsion b. Suspension c. Solution d. All of the above

b. Suspension

Growing of more than one crop on the same land in one year a. Mixed crop b. Multiple cropping c. Inter-cropping d. None of the above

b. Multiple cropping

Growing of two or more crops simultaneously and intermingled with no row arrangement. a. Mixed cropping b. Inter-cropping c. Multiple cropping d. None of the above

a. Mixed cropping

Growing of two or more crops in alternate rows. a. Inter-planting b. Inter-cropping c. Inter-culture d. All of the above

b. Inter-cropping

It is a practice of planting short-term annual crop with long-term annual or biennial crops. a. Inter-planting b. Inter-cropping c. Inter-culture d. All of the above

a. Inter-planting

It is the cultivation of one crop underneath a perennial crop. a. Inter-planting b. Inter-cropping c. Inter-culture d. All of the above

c. Inter-culture

Application of chemical to a small restricted area, usually to control the spread of pest. a. Spot treatment b. Space application c. Direct application d. All of the above

a. Spot treatment

Dispersion of liquid or dry particles in air in such a manner that target pest is exposed to chemical. a. Spot treatment b. Space treatment c. Direct application d. All of the above

b. Space treatment

Application of chemical to the steam, fruit, leaves, needles, or blades of the plant. a. Direct application b. Foliar application c. Space application d. All of the above

b. Foliar application

Application of chemical to a specific area such as row, bed, or base of the plant. a. Direct application b. Spot treatment c. Space application d. None of the above

a. Direct application