AGRICULTURAL ENERGY AND POWER ENGINEERING

Question 1

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

Answer 1

RECHARGING

Question 2

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

Answer 2

SOLAR CONSTANT

Question 3

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

Answer 3

TRUE

Question 4

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

Answer 4

FULLY CHARGE

Question 5

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

Answer 5

TRUE

Question 6

It joins connecting and piston of an engine.

Answer 6

PISTON PIN

Question 7

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

Answer 7

NONE

Question 8

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

Answer 8

MUFFLER

Question 9

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

Answer 9

UNDER SHOT

Question 10

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

Answer 10

INJECTION PUMP

Question 11

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

Answer 11

SOLSTICE

Question 12

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

Answer 12

TUB WHEEL

Question 13

A chemical device for generating electricity.

Answer 13

BATTERY

Question 14

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

Answer 14

COMPACT

Question 15

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

Answer 15

DAM

Question 16

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

Answer 16

SUNSHINE DURATION

Question 17

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

Answer 17

THROTTLE

Question 18

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.

Answer 18

96.24

Question 19

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?

Answer 19

LEAN

Question 20

The anaerobic microbial breakdown of sugar into alcohol.

Answer 20

FERMENTATION

Question 21

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

Answer 21

CRANK THROW

Question 22

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

Answer 22

IDLE SPEED

Question 23

How many liters are there in a gallon?

Answer 23

3.8

Question 24

A device for measuring engine speed or rpm.

Answer 24

TACHOMETER

Question 25

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

Answer 25

VALVES

Question 26

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.

Answer 26

CLUTCH

Question 27

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

Answer 27

DIFFERENTIAL

Question 28

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

Answer 28

BREAST WHEEL

Question 29

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

Answer 29

NAMEPLATE

Question 30

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

Answer 30

120 DEGREES

Question 31

A supercharger driven by the engine exhaust system.

Answer 31

TURBOCHARGER

Question 32

The discharging of burned gases from the combustion chamber.

Answer 32

EXHAUST STROKE

Question 33

How much proof does a 90% ethanol has?

Answer 33

180

Question 34

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

Answer 34

VENTURI

Question 35

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?

Answer 35

1800 REVOLUTIONS

Question 36

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

Answer 36

MECHANICAL EFFICIENCY

Question 37

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

Answer 37

RADIATOR

Question 38

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

Answer 38

ACINOGENS

Question 39

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

Answer 39

INTERNAL COMBUSTION ENGINE

Question 40

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

Answer 40

EXHAUST HEAT

Question 41

The equivalent percentage alcohol content of a 150 proof ethanol.

Answer 41

75%

Question 42

The term used when the sun is nearest the earth.

Answer 42

PERIHELION

Question 43

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

Answer 43

SPARK PLUG

Question 44

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.

Answer 44

46.324 hp

Question 45

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

Answer 45

COMPLETELY DISCHARGE

Question 46

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

Answer 46

FORCE SPEED

Question 47

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

Answer 47

TDC

Question 48

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

Answer 48

6

Question 49

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.

Answer 49

HYDRAULIC PUMP

Question 50

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

Answer 50

IGNITION COIL

Question 51

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

Answer 51

INTAKE MANIFOLD

Question 52

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

Answer 52

VERTICAL-AXIS

Question 53

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

Answer 53

GENERAL PURPOSE

Question 54

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

Answer 54

ALFONSE

Question 55

Also known as "impulse" turbine.

Answer 55

PELTON

Question 56

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

Answer 56

TRUE

Question 57

It is the distance the piston travels in one direction.

Answer 57

STROKE

Question 58

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

Answer 58

INDICATED HORSEPOWER

Question 59

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

Answer 59

ODD NUMBER

Question 60

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.

Answer 60

5.3814 hp