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COMPETENCY > AGRICULTURAL ENERGY AND POWER ENGINEERING > Flashcards

AGRICULTURAL ENERGY AND POWER ENGINEERING Flashcards

1
Q

When electric current flows through the electrolyte from positive material to negative material, the battery is said to be?

A

RECHARGING

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2
Q

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

A

SOLAR CONSTANT

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3
Q

True or False. Savonius windmills are vertical axis-type windmills.

A

TRUE

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4
Q

What could be the condition of the battery when the specific gravity reading in the hydrometer is 1.250 to 1.300?

A

FULLY CHARGE

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5
Q

True or False. Fractional horsepower motors need 1-phase electrical circuits.

A

TRUE

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6
Q

It joins connecting and piston of an engine.

A

PISTON PIN

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7
Q

In a four-cylinder, four-stroke diesel engine, how many spark plugs are required?

A

NONE

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8
Q

The device located in the exhaust system that reduces exhaust noise.

A

MUFFLER

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9
Q

Also known as “current wheel” because water passing under the wheel strikes the blades.

A

UNDER SHOT

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10
Q

In compression ignition engine, which part of the engine is controlled by the governor?

A

INJECTION PUMP

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11
Q

The event when the sun’s apparent path is displaced farthest north or south from the equator.

A

SOLSTICE

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12
Q

A type of slow rotating waterwheel that operates in a horizontal plane.

A

TUB WHEEL

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13
Q

A chemical device for generating electricity.

A

BATTERY

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14
Q

Types of four-wheel tractors with power rating below 32 hp.

A

COMPACT

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15
Q

A barrier constructed to contain the flow of water and serves to create the elevation difference or head.

A

DAM

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16
Q

A weather parameter measured by an instrument known as the “Campbell-Stokes”

A

SUNSHINE DURATION

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17
Q

The device that controls the speed of the engine by admitting more or less fuel mixture to the combustion chamber.

A

THROTTLE

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18
Q

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.

A

96.24

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19
Q

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?

A

LEAN

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20
Q

The anaerobic microbial breakdown of sugar into alcohol.

A

FERMENTATION

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21
Q

The distance from the crankshaft to the center of the crankpin.

A

CRANK THROW

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22
Q

The engine speed when the throttle or accelerator lever is fully released and there is no load on the engine.

A

IDLE SPEED

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23
Q

How many liters are there in a gallon?

A

3.8

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24
Q

A device for measuring engine speed or rpm.

A

TACHOMETER

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25
Q

In an ICE, it allows the flow of fuel, air or exhaust gases.

A

VALVES

26
Q

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.

A

CLUTCH

27
Q

A set of bevel gears that allows power to be transmitted to each axle at different speeds to allow satisfactory steering of the tractor.

A

DIFFERENTIAL

28
Q

A type of waterwheel where the buckets receive water at about radial height.

A

BREAST WHEEL

29
Q

It carries the essential information about a particular motor or engine.

A

NAMEPLATE

30
Q

What is the firing interval for a four-stroke, six cylinder engine?

A

120 DEGREES

31
Q

A supercharger driven by the engine exhaust system.

A

TURBOCHARGER

32
Q

The discharging of burned gases from the combustion chamber.

A

EXHAUST STROKE

33
Q

How much proof does a 90% ethanol has?

A

180

34
Q

A narrowed passageway in the carburetor that increases the velocity of air moving through it.

A

VENTURI

35
Q

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?

A

1800 REVOLUTIONS

36
Q

It measures the ability of an engine to convert fuel unto useful work.

A

MECHANICAL EFFICIENCY

37
Q

The heat exchanger that removes heat from a coolant passing through it.

A

RADIATOR

38
Q

In biogas technology, it is the microorganisms that convert the complex organic compounds into simpler compounds.

A

ACINOGENS

39
Q

An engine in which fuel is burned inside the engine itself rather than in a separate device.

A

INTERNAL COMBUSTION ENGINE

40
Q

In a typical spark ignition engine, the highest percentage of heat loss is accounted for what?

A

EXHAUST HEAT

41
Q

The equivalent percentage alcohol content of a 150 proof ethanol.

A

75%

42
Q

The term used when the sun is nearest the earth.

A

PERIHELION

43
Q

It provides the gap for the high voltage surge to jump and ignite the fuel in the engine cylinder.

A

SPARK PLUG

44
Q

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.

A

46.324 hp

45
Q

The state of charge of a lead acid battery of the specific gravity meter reads 1.150 or less.

A

COMPLETELY DISCHARGE

46
Q

A type of lubrication system where oil is pumped directly top the crankshaft, connecting rod, piston pin, timing gears, and camshaft.

A

FORCE SPEED

47
Q

The piston position at the lower limit of its travel in the cylinder.

A

TDC

48
Q

How many cells do 12-volt lead acid batteries has?

A

6

49
Q

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.

A

HYDRAULIC PUMP

50
Q

What part of the magneto system in small park ignition engines act as a transformer?

A

IGNITION COIL

51
Q

It is the inlet duct for fuel and air or just air for diesel engines.

A

INTAKE MANIFOLD

52
Q

Type of windmills or wind turbines that accept wind from any direction.

A

VERTICAL-AXIS

53
Q

A type of two-tractor fitted with a drawbar for traction work and a power-take-off for rotary work.

A

GENERAL PURPOSE

54
Q

He advanced the theory of operation of all modern types of ICE and stated that there were four conditions essential for its efficient operation

A

ALFONSE

55
Q

Also known as “impulse” turbine.

A

PELTON

56
Q

True or False. The maximum power that the wind machine can recover from the speeding mass of air is only about 60%.

A

TRUE

57
Q

It is the distance the piston travels in one direction.

A

STROKE

58
Q

The term used to describe the power generated in the cylinder and received by the piston.

A

INDICATED HORSEPOWER

59
Q

In lead acid batteries, is the total number of plates per cell an odd number or even number.

A

ODD NUMBER

60
Q

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.

A

5.3814 hp

COMPETENCY (3 decks)

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