Part 2 Flashcards
Power generated from a falling water.
Hydro power
Biomass power
Wind power
None of the above
Answer – hydro power
Vehicle designed to pull, propel, and supply power to operate machinery used in agricultural operation.
Agricultural Tractor
Automobile
Payloader
None of the above
Answer – Agricultural Tractor
The stirring wheel of the tractor can be found at
In front
At the rear
At the operator’s seat
None of the above
Answer – at the operator’s seat
A substance that is added to the tractor for the purpose of changing traction and stability.
Ballast
Cage wheel
Plow
Hydraulic lift
Answer - ballast
Power drive that can be found at the rear of the tractor to propel power implements and stationary machines.
Power take off drive
Hydraulic system
Differential gear
None of the above
Answer – Power takeoff
Standard rpm of a tractor PTO drive.
600 rpm
200 rpm
540 rpm
None of the above
Answer – 540 rpm
Standard number of splines on a PTO drive.
10
21
15
None of the above
Answer - 21
A two-wheeled and hand-operated tractor used primarily as a substitute for draft animals.
Power tiller
Reaper
Seeder
None of the above
Answer Power tiller
Attachment to a tractor rear wheel to increase traction.
Ballast
Cagewheel
Stirring wheel
None of the above
Answer - cagewheel
Tractor part that controls the direction of the travel of the machine.
Rear wheel
Front wheel
Stirring wheel
None of the above
Answer - Stirring wheel
A tractor device which automatically raises or lowers the implement in operation to maintain a given draft
Automatic draft control
Automatic position control
3-point linkage
None of the above
Answer – Automatic draft control
The inherent characteristics of tractors to maintain or to produce increased drawbar pull even if the speed is reduced.
Lugging ability
Mechanical efficiency
Coefficient traction
None of the above
Answer – Lugging ability
The lower PTO speed of standard four-wheel tractor is.
540 rpm
450 rpm
640 rpm
None of the above
Answer – 540 rpm
It is the special arrangement of gears to permit driving member to rotate slower or faster than the other and permit operation of driving wheels at different speed for easy turn.
Spur gear
Planetary gear
Differential
None of the above
Answer - Differential
It is a gear reduction of the tractor located in the power train between the differential and the driving wheel and transmits power of low speed and large tongue to the rear axles and wheels.
Differential
Universal joint
Final drive
None of the above
Answer - Final drive
Standard power-take-off speed of a tractor.
100 rpm
540 rpm
1200 rpm
None of the above
Answer - 540 rpm
Standard number of spline for PTO shaft.
6 spline 21 spline 20 spline All of the above None of the above
Answer – All of the above
Standard shaft diameter of PTO shaft.
35 mm 45 mm 50 mm Two of the above None of the above
Answer – Two of the above
If farm tractor is rated at 80 horsepower, its metric equivalent is
75 kw
60 kw
80 kw
None of the above
Answer – 60 kW
The burning efficiency of rice hull furnaces is between
70-80 %
80-90 %
90 and less than 100 %
All of the above
Answer – 90 to 99%
The thermal efficiency of rice hull furnaces is between
40-70 %
70-90 %
10-40 %
All of the above
Answer – 40 to 70%
It is an indicator of the amount of fuel in a furnace that is converted into ash.
Burning efficiency
Thermal efficiency
Heat utilization efficiency
None of the above
Answer : Burning efficiency
It indicates the ratio of the amount of heat given off by the furnace to the system and the heat used from the fuel.
Burning efficiency
Thermal efficiency
Heat utilization energy
None of the above
Answer - Thermal efficiency
Which of the following is true in operating gasifier for internal combustion engine?
Only 50 to 70 % of the diesel oil can be replaced by gas producer.
Gasoline and diesel can be fueled with gas producer.
The power output of gasoline engine at arbitrary rpm will decrease by 30 to 50 % when fueled with producer gas.
All of the above
Answer - All of the above
A rice hull gasifier reactor that produces less tar during operation.
Updraft
Cross draft
Down draft
All of the above
Answer – down draft
The primary gas produced during gasification.
Methane
Carbon Dioxide
Carbon Monoxide
All of the above
Answer: Carbon monoxide
When a biogas contains 40 % methane and 60 % carbon dioxide,
The biogas can be used for cooking
The biogas can run gas refrigerator
The biogas can be used for lighting
None of the above
Answer – None of the above
A biogas is generated inside the
Gas holder
Mixing tank
Digester
None of the above
Answer -Digester
The feed material to water ratio for biogas generation is
1:0.5 to 1:1
1:1 to 1:2
1:2 to 1:3
None of the above
Answer – 1:1 to 1:2
A solid biomass fuel burning device used for domestic cooking water heating, smoking, roasting and simmering.
Furnace
Cookstove
Biomass oven
None of the above
Answer - Cookstove
The percentage primary air requirement based on the total air for the combustion of fuel in a cookstove.
80 %
60 %
40 %
None of the above
Answer – 80%
Elements necessary for combustion.
Fire
Air
Fuel
All of the above
Answer – All of the above
Air required for complete combustion of combustible gasses.
Stoichiometric air
Primary air
Secondary air
All of the above
Answer – Secondary air
The amount of heat required to raise the temperature of one pound water by one degree Farenheight.
Kcal
BTU
Joule
None of the above
Answer - BTU
The excessive amount of tars produced in the combustion of agricultural waste is primary due to:
Insufficiency of fuel
Less air is used
Too much air used
None of the above
Answer – Less air is used
Open-fire stove has a thermal efficiency of:
3-11 %
11-20 %
20-30%
All of the above
Answer – 3-11%
A chamber where combustion of fuel takes place.
Damper
Chimney
Fire box
None of the above
Answer – Fire box
The thermal efficiency of a cookstove can be increased by:
Increasing the amount of fuel
Using more air for the fuel
Insulating the stove
All of the above
Answer – Insulating the stove
The power output of an agriwaste-fired multiple-burner stove can be increased by:
Providing large connecting tunnel for the pot holes
Increasing the height of the chimney
Providing damper to control the flow of passage of air
All of the above
None of the above
Answer – All of the above
The recommended angle for the inclined metal grates on the step-grate-type stove.
45-60 deg
30-40 deg
60-80 deg
None of the above
Answer – 45 to 60 deg
A gas produced from agricultural waste which is odorless, tasteless, colorless and flammable.
Biogas
CO
CH4
None of the above
Answer – Carbon monoxide
The primary gas produced during anaerobic digestion of agricultural wastes.
CH4 & H2S
CH4 & CO2
CH4 & CO
All of the above
Answer – CH4 & CO2
C-N ratio suitable for anaerobic digestion of agriwaste.
10:1 to 20:1
20:1 to 30:1
30:1 to 40:1
None of the above
Answer – 30 to 40
The power output of diesel engine, when powered with gas producer at an arbitrary speed will be reduced by
10-20 %
30-50 %
50-70 %
None of the above
Answer – 50 to 70%
The percentage amount of diesel fuel can be replaced by gas producer
20-40 %
50-70%
90-100%
None of the above
Answer – 50 to 70%
Type of engine that can be fueled with producer gas.
Gas engine
Diesel engine
Gasoline engine
All of the above
Answer - All of the above
The bulk density of rice husk.
50-80 kg/m3
100-120 kg/m3
140-160 kg/m3
None of the above
Answer – 100 to 120 kg/m3
To minimize channel formation inside the gasifier reactor, the superficial gas velocity on the bed of the char should not exceed.
8-9 cm/sec
15-20 cm/sec
20-23 cm/sec
None of the above
Answer – 8 to 9 cm/sec
The air requirement for gasification of agricultural waste ranged from
10-20 % of stoichiometric air (SA)
20-30 % of SA
30-40 % of SA
None of the above
Answer – 30 to 40% SA
A cleaning units for rice husk gasifier to remove gaseous pollutant and solid particles while cooling the gas at the same time.
Cyclone separator Fabric filter Scrubber All of the above None of the above
Answer - Scrubber
A type of gas producer which has the ability to gasify wet fuel.
Updraft
Down draft
Cross draft
Fluidized bed
Answer - Updraft
A cleaning system is needed for gasifier when the unit is to be used for
Direct heating
Power generation
Gas production
None of the above
Answer – Power generation
The gasification rate of rice hull ranged from
90-105 kg/m2-hr
110-210 kg/m2-hr
210-240 kg/m2-hr
None of the above
Answer – 110 to 210 kg/m2-hr
Rice hull gasifier efficiency normally ranged from
50-70 %
70-80 %
80-90 %
None of the above
Answer – 50 to 70%
The caloric value of fuel is
The amount of heat contained by the fuel per unit weight
The heat needed to burn a certain weight of fuel
The weight of fuel to be heated
None of the above
Answer – The amount of heat contained by the fuel per unit weight
A type of rice husk furnace that burn the fuel while it is being spread in a circular pattern inside the combustion chamber.
Step grate furnace
Suspended air furnace
Cyclone furnace
All of the above
Answer – Cyclone furnace
The thermal efficiency of the furnace is the ratio of
The amount of fuel used to the amount of heat generated during combustion
The amount of heat generated during combustion to the amount of fuel used
The amount of heat delivered to the amount of heat available in the fuel used
None of the above
Answer - The amount of heat delivered to the amount of heat available in the fuel used
The burning temperature of most agricultural waste
100-200C
300-400 C
500-600 C
None of the above
Answer – 300 to 400 C
A high-cetane fueled engine uses
Diesel as fuel and is difficult to start engine at lower temperature
Diesel as fuel and is easy to start at higher temperature
Gasoline fuel and is easy to start at lower temperature
None of the above
Answer - Diesel as fuel and is easy to start at higher temperature
High viscosity engine oil is desirable to use because
Its viscosity changes easily with a change in temperature
Its viscosity does not change easily with the change in temperature
Its viscosity changes even without a change in temperature
None of the above
Answer – Its viscosity does not change easily with the change in temperature
Engine oil having high flash and fire point indicates.
High boiling point
High evaporation rate
High heating value
All of the above
Answer - High boiling point
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.
Anticorrosive
Antioxidants
Dispersants
All of the above
Answer - antioxcidant
An additive purposely to provide a protective film on bearing surfaces thus preventing any acid to corrode metal parts.
Anticorrosive
Antioxidants
Dispersants
All of the above
Answer - Anticorrosive
Additives to cause carbon particles in the engine to remain in suspension in oil.
Anticorrosive
Antioxidants
Dispersants
All of the above
Answer - Dispersant
The burning of portion of fuel in the combustion chamber of an engine at a rate faster than the desired.
Knocking
Detonation
Misfiring
All of the above
Answer - Detonation
A device used to measure the quantity of oil in a crankcase.
Dipstick
Oil gauge
Oil stick
None of the above
Answer - Dipstick
A device that provides a rich mixture of fuel during high load and lean mixture during under load.
Carburetor
Economizer
Fuel regulator
All of the above
Answer - Economizer
The lubrication system of an engine is basically
To reduce wear and tear of an engine
To act as complement of the cooling system
To act seal between the piston and cylinder wall
All of the above
Answer - All of the above
When a diesel engine knocks, the trouble is
The diesel fuel ignition timing is late
Incorrect type of spark plug
Incorrect engine lubrication and wrong grade oil
All of the above
Answer - The diesel fuel ignition timing is late
When a gasoline engine knocks, the problem is
The spark timing is too far advance
Incorrect type of spark plug
Incorrect type of fuel
All of the above
Answer - The spark timing is too far advance
If the engine timing is advance
The spark plug ignites earlier than the fuel while piston is completing the compression stroke
The spark plug ignites earlier than the fuel while the piston is at the intake stroke
The spark ignites earlier than the fuel while moving downward immediately after the power stroke
All of the above
Answer - The spark plug ignites earlier than the fuel while piston is completing the compression stroke
It is the act of checking, testing, measuring, repairing and adjusting the engine in order to bring it to the peak efficiency.
Trouble shooting
Tune-up
Timing adjustment
All of the above
Answer – tune up
The coefficient of traction for wheel-type tractor is highest for
Concrete road
Fine sand
Sandy loam soil
All of the above
Answer – Concrete road
The rapid explosion of mixture of fuel and air within the cylinder when ignited by spark plug is in _____.
Constant volume combustion
Constant temperature combustion
Constant pressure combustion
All of the above
Answer - Constant volume combustion
The relatively slow burning as the fuel is injected into a highly compressed heated air is.
Constant volume combustion
Constant temperature combustion
Constant pressure combustion
All of the above
Answer - Constant pressure combustion
The gross heating value of diesel is
Higher than gasoline
Higher than kerosene
Higher than ethanol
All of the above
Answer - Higher than ethanol
Which of the following is true in the operating gasifier for internal combustion engine?
Only 50 to 70 % of the diesel oil can be replaced by gas producer.
Gasoline and diesel can be fueled with gas producer.
The power output of gasoline engine at arbitrary rpm will increase by 30 to 50 % when fueled with producer gas.
All of the above
Answer - All of the above
An injection system used in small stationary diesel engine consisting essentially of a high pressure pump and an injection nozzle.
Air injection system
Solid injection system
Automized injection system
None of the above
Answer - Solid injection system
Thermal efficiency of internal combustion engine.
0 to 10 %
10 to 20 %
20 to 30 %
None of the above
Answer -
An engine running at a speed of 2000 rpm is classified as
Low speed engine
Medium speed engine
High speed engine
None of the above
Answer – High speed
It is used to seal engine components which are bolted to the sub-frame, the cylinder block, and the crankcase.
Oil
Grease
Gasket
None of the above
Answer – Gasket
An air cooled engine is basically equipped with
Pump
Fan
Fan and pump
None of the above
Answer - Fan
A rice hull gasifier reactor that produces less tar during operation.
Updraft
Crossdraft
Downdraft
All of the above
Answer – Down draft
The primary gas produced during gasification.
Methane
Carbon dioxide
Carbon monoxide
All of the above
Answer – Carbon monoxide
When an engine is diesel operated,
The moisture of air and fuel is taken in the cylinder
The fuel is compressed into the combustion engine
Air fuel ratio is not constant as the quantity of air drawn into the cylinder is not always the same
All of the above
Answer - Air fuel ratio is not constant as the quantity of air drawn into the cylinder is not always the same
When operating light equipment, it is recommended to use.
Four stroke gasoline engine
Two stroke gasoline engine
Four stroke diesel engine
All of the above
Answer - Two stroke gasoline engine
A four-stroke-cycle engine is advantageous to use than two-stroke-cycle engine for the reason that
It is easier to start the engine
Has regular intake and exhaust valves
Easy to lubricate
All of the above
Answer – All of the above
A turbine used for hydro system wherein pressurized water is converted into a high speed jet by passing it through a nozzle.
Impulse turbine
Reaction turbine
Water wheel
None of the above
Answer – impulse turbine
A turbine for hydro system which runs completely filled with water.
Impulse turbine
Reaction turbine
Water wheel
None of the above
Answer – Reaction Turbine
A component part of solar electric system that converts sunlight to electricity
PV panel
Solar cell
Solar module
All of the above
Answer – All of the above
Solar battery is rated in terms of
Dimension of the battery
Wattage
Ampere – hour
None of the above
Answer – Amp-hour
The capacity require for 12-volt solar panel system is 73.6 watt-hour. What is the ampere-hour capacity of the battery needed for the system?
6.13 ampere-hour
4.05 ampere-hour
7.23 ampere-hour
None of the above
Answer - 6.13 ampere-hour
The act of analyzing, testing, and measuring the engine to remedy the cause and trouble.
Servicing
Tune-up
Trouble shooting
All of the above
Answer - Trouble shooting
When strength is provided beyond what is needed as an extra margin of insurance against parts failure.
Factor of ignorance
Factor of safety
Reliability
None of the above
Answer – Factor of safety
An engine running without load is in.
Optimum running condition
Low running condition
Idle condition
None of the above
Answer – idle condition
Two engines are rated 1 hp and the other is 1 ps. Which of the following statement is true.
1 hp engine is stronger than 1 ps engine
Two engines are the same in strength
1 ps engine is stronger than 1 hp engine
None of the above statement is true
Answer - 1 ps engine is stronger than 1 hp engine
Japanese engines are usually rated in terms of
Horsepower
Pferde starke
Watts
All of the above
Answer Pferde starke
