AGRICULTURAL ENERGY AND POWER ENGINEERING Flashcards
When electric current flows through the electrolyte from positive material to negative material, the battery is said to be?
RECHARGING
The solar energy received per unit time on a unit area of a surface perpendicular to the radiation at the limit of the atmosphere and is estimated at 1353 W/m2
SOLAR CONSTANT
True or False. Savonius windmills are vertical axis-type windmills.
TRUE
What could be the condition of the battery when the specific gravity reading in the hydrometer is 1.250 to 1.300?
FULLY CHARGE
True or False. Fractional horsepower motors need 1-phase electrical circuits.
TRUE
It joins connecting and piston of an engine.
PISTON PIN
In a four-cylinder, four-stroke diesel engine, how many spark plugs are required?
NONE
The device located in the exhaust system that reduces exhaust noise.
MUFFLER
Also known as “current wheel” because water passing under the wheel strikes the blades.
UNDER SHOT
In compression ignition engine, which part of the engine is controlled by the governor?
INJECTION PUMP
The event when the sun’s apparent path is displaced farthest north or south from the equator.
SOLSTICE
A type of slow rotating waterwheel that operates in a horizontal plane.
TUB WHEEL
A chemical device for generating electricity.
BATTERY
Types of four-wheel tractors with power rating below 32 hp.
COMPACT
A barrier constructed to contain the flow of water and serves to create the elevation difference or head.
DAM
A weather parameter measured by an instrument known as the “Campbell-Stokes”
SUNSHINE DURATION
The device that controls the speed of the engine by admitting more or less fuel mixture to the combustion chamber.
THROTTLE
Determine the efficiency of a transmission with a 7:1 gear reduction if the input speed is 1800 rpm, input torque of 85 lb-ft, and an output torque of 575 lb-ft.
96.24
What do you call the fuel mixture that is containing more than required amount of air to combine with all the carbon in the fuel?
LEAN
The anaerobic microbial breakdown of sugar into alcohol.
FERMENTATION
The distance from the crankshaft to the center of the crankpin.
CRANK THROW
The engine speed when the throttle or accelerator lever is fully released and there is no load on the engine.
IDLE SPEED
How many liters are there in a gallon?
3.8
A device for measuring engine speed or rpm.
TACHOMETER
In an ICE, it allows the flow of fuel, air or exhaust gases.
VALVES
It is part of the transmission system that permits the disconnection of power unit from the transmission gears and drive wheels of most automotive vehicles.
CLUTCH
A set of bevel gears that allows power to be transmitted to each axle at different speeds to allow satisfactory steering of the tractor.
DIFFERENTIAL
A type of waterwheel where the buckets receive water at about radial height.
BREAST WHEEL
It carries the essential information about a particular motor or engine.
NAMEPLATE
What is the firing interval for a four-stroke, six cylinder engine?
120 DEGREES
A supercharger driven by the engine exhaust system.
TURBOCHARGER
The discharging of burned gases from the combustion chamber.
EXHAUST STROKE
How much proof does a 90% ethanol has?
180
A narrowed passageway in the carburetor that increases the velocity of air moving through it.
VENTURI
What could be the speed of the engine, in revolution per second, if the piston speed is 360 meters per minute and the crank throw is 50 millimeters?
1800 REVOLUTIONS
It measures the ability of an engine to convert fuel unto useful work.
MECHANICAL EFFICIENCY
The heat exchanger that removes heat from a coolant passing through it.
RADIATOR
In biogas technology, it is the microorganisms that convert the complex organic compounds into simpler compounds.
ACINOGENS
An engine in which fuel is burned inside the engine itself rather than in a separate device.
INTERNAL COMBUSTION ENGINE
In a typical spark ignition engine, the highest percentage of heat loss is accounted for what?
EXHAUST HEAT
The equivalent percentage alcohol content of a 150 proof ethanol.
75%
The term used when the sun is nearest the earth.
PERIHELION
It provides the gap for the high voltage surge to jump and ignite the fuel in the engine cylinder.
SPARK PLUG
Determine the indicated horsepower of a 4-stroke, 100mm x 100mm, 6-cylinder engine running at 1600 rpm. The mean effective pressure per power stroke is 550 kPa.
46.324 hp
The state of charge of a lead acid battery of the specific gravity meter reads 1.150 or less.
COMPLETELY DISCHARGE
A type of lubrication system where oil is pumped directly top the crankshaft, connecting rod, piston pin, timing gears, and camshaft.
FORCE SPEED
The piston position at the lower limit of its travel in the cylinder.
TDC
How many cells do 12-volt lead acid batteries has?
6
It is an automatic water pumping machine that uses the kinetic energy of the flowing water in a pipe to elevate part of the water to a height greater than that causing the flow.
HYDRAULIC PUMP
What part of the magneto system in small park ignition engines act as a transformer?
IGNITION COIL
It is the inlet duct for fuel and air or just air for diesel engines.
INTAKE MANIFOLD
Type of windmills or wind turbines that accept wind from any direction.
VERTICAL-AXIS
A type of two-tractor fitted with a drawbar for traction work and a power-take-off for rotary work.
GENERAL PURPOSE
He advanced the theory of operation of all modern types of ICE and stated that there were four conditions essential for its efficient operation
ALFONSE
Also known as “impulse” turbine.
PELTON
True or False. The maximum power that the wind machine can recover from the speeding mass of air is only about 60%.
TRUE
It is the distance the piston travels in one direction.
STROKE
The term used to describe the power generated in the cylinder and received by the piston.
INDICATED HORSEPOWER
In lead acid batteries, is the total number of plates per cell an odd number or even number.
ODD NUMBER
Determine the maximum power (in hp) that can be obtained from a 15 kph wind measured at 2 meters above the ground. A 5-meter diameter, 4-bladed windmill will be installed in the area at 15-meter height. Ground roughness in the site is 0.35 and air density id approximately1.15 kg/m3 at 15-meter height.
5.3814 hp
