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wind power
88問 • 1年前
  • Geneva Pahil
    • 通報

    問題一覧

  • 1

    Developed due to atmospheric temperature difference generated by the sun, which turn rises to partial difference

    Wind

  • 2

    It is the use of wind energy to generate useful work. It is mostly used to generate electricity.

    Wind power

  • 3

    It is generated almost completely with winter vines, generally group into wind farms, and connected to the electrical grid

    Wind power

  • 4

    What is the total power produced by the wind power in the Philippines?

    443 MW

  • 5

    How many percentage does the wind power in the Philippines account to the total capacity of the energy sources?

    1.6%

  • 6

    It converts the wind, kinetic energy into electrical energy using fast rotating rotor

    Wind turbine

  • 7

    Wind turbine, usually have a propeller type with diameter of

    6 to 12 feet

  • 8

    How much energy does the win turbine generates?

    200 to 1500 W or even higher

  • 9

    What are the two sources of wind?

    North east monsoon, Southwest monsoon

  • 10

    North east monsoon is also known as

    Amihan

  • 11

    Southwest monsoon also known as

    Habagat

  • 12

    When does north East Munson usually happens

    October to April

  • 13

    When is the maximum intensity of north east monsoon?

    January

  • 14

    When does Southwest moonstone happens?

    June to September

  • 15

    What month does the maximum intensity of Southwest monsoon happens?

    August

  • 16

    What are the two areas for wind energy system Visayas

    Iloilo, Guimaras

  • 17

    It is a very old technology that uses the wind to either milligrams into floor drive machines or remove water

    Windmill

  • 18

    What is a windmill

    Windmill is an old technology in which it does not produce electricity, but uses mechanical energy . The torque or the rotational force of the windmill moves through the years to the Millstone, this allow to grind grains driveshaft to pump water, and even run every reciprocating so producing a paper

  • 19

    Explain wind turbine

    Winter band is a machine that generates electricity in which through our rotating camshaft so this camshaft passes our wire back and forth through a magnetic field generating an electric current

  • 20

    This rotates, the turbine

    Tail vanes

  • 21

    This are turbines that have three or four blades and operate up wind with the turbine by voting at the top of the tower so the blades face into the wind

    Horizontal axis wind turbines

  • 22

    Explain vertical axis to win turbines

    These turbines are Omni directional meaning they don’t have the need to be adjusted two point into the wind operate

  • 23

    Explain Magnus, vertical axis, wind, turbine,

    So this turbine is the next generation turbine that leverages the Magnus effect the optimize power generation in varying wind condition, so it offers lower manufacturing cost, reduce noise and lower risk bird strikes. I like to traditional wind turbines at design to withstand wins up to 340 KPH and remains operational during typhoons.

  • 24

    Give the advantages of wind energy systems

    Clean , Safe , Economic, Cheap , Abundant, Sustainable, Varied application

  • 25

    Enumerate limitations of wind, energy systems

    Site specific, Need storage, Back up system, High initial cost

  • 26

    Applicable or adaptable only in areas with the wind speed of 3 m/s or higher

    Site specific

  • 27

    It requires water reserve or batteries due to considerable power supply variation

    Need storage

  • 28

    Requires back up system for area where wind supply is low

    Back up system

  • 29

    Which makes it not attractive investment in competition with other alternative energy

    High initial cost

  • 30

    Machine that converts skin attic energy from the wind into mechanical energy to pump water through windowsills to obtain source of freshwater from wells and for draining lying areas of land

    Wind pump

  • 31

    It catches the wind and start to Spin

    Wind blades

  • 32

    This spinning happens around the central part

    Rotor

  • 33

    It is connected from the road, or that helps speed up the movement

    Gears

  • 34

    This fast spinning make this work, pulling water up from the ground

    Pump

  • 35

    The water is pushed through pipes to where it’s needed like for farming

    Water flow

  • 36

    What is the wind power per square meter per cross-sectional area of the wind bump rotor?

    9 W per square meters

  • 37

    Wind bump, without a complicated guiding device can only extract about how many percentage of the wind kinetic energy

    50%

  • 38

    In horizontal axis rotor, what is the direction of the wind?

    Parallel

  • 39

    Come on used for pumping water since it produces higher power output per unit size of the machine

    Horizontal axis

  • 40

    What direction should be the vertical axis rotation of the rotor to the wind?

    Perpendicular

  • 41

    It is a rotor in which the axis of the rotation of the rotor is bone tied to the surface of the earth, and perpendicular with the wind direction

    Crosswind rotor

  • 42

    What are the classifications of wind pump according to the speed of the rotor?

    High speed, Low speed

  • 43

    This is a wind pump with view number of blades they are rotary usually having up to eight blades and they are normally characterized below torque fast speed rotor

    High speed

  • 44

    Awin pump with construction having several numbers of blades usually 18 to 48 blades they are characterized by high torque low speed rotor

    Low speed

  • 45

    Basic component parts of wind pump

    Rotor assembly, Head assembly, Tail Vane assembly, Pump assembly

  • 46

    It converts kinetic energy of the wind, the mechanical energy

    Rotor assembly

  • 47

    Support the rotor and the tail vein. Assemblies

    Head assembly

  • 48

    Power at the rotor is converted to reciprocating motion through

    Transmission Drive

  • 49

    This makes the rotor perpendicularly face the incoming win this can be adjusted, depending on the desired rotor orientation

    Tail vane assembly

  • 50

    Used to elevator rotor to desired elevation to obtain the wind speed necessary for water, pumping

    Tower assembly

  • 51

    Used to lift water from the source at the desired rate and head

    Pump assembly

  • 52

    It is the amount of energy available from the wind within a unit time

    Wind power

  • 53

    What is the ratio of the mechanical power actually attained directly from the rotor and the wind power?

    Power Coefficient

  • 54

    It is the ratio between the torque and the rotor and the reference torque

    Torque coefficient

  • 55

    It is the ratio of the circumferential velocity at the tip of the rotor to the free stream velocity

    Tips speed ratio

  • 56

    It is the surface of the blade over which the air flows

    Air foil

  • 57

    It is the force measured perpendicular to the air flow

    Lift

  • 58

    Where is the force measured parallel with the flow?

    Drag

  • 59

    Where is the angle required to lift an air foil measured between the cord line and direction of the airflow?

    Angle of attack

  • 60

    Where is the ratio of the drug coefficient to the lift coefficient?

    CD/CL ratio

  • 61

    Where is the amount of power required in lifting a given rate of water at the given height or lift?

    Hydraulic power

  • 62

    It is the ratio of the power generated in pumping water to the power received by the router

    Overall system efficiency

  • 63

    It is the ratio of the total capacity to the displacement volume of the pump

    Pump, volumetric, efficiency

  • 64

    It is the amount of the road or surface area, facing the wind in proportion swept area of the rotor

    Solidity

  • 65

    This relies upon the wind, speed pressure in the rotor to turn its sideways or upward away from the wind

    Variable axis control

  • 66

    The blades are actually blended away from the wind as the wind speed increases. This is only feasible for downwind machine since the blade would hit the lower and upwind machines.

    Coning speed control

  • 67

    This slows the rotor blades by disrupting the smooth airflow over them as the wind speed picks up and approaches the cat outspeed as spring restrained, airbrake or flap, begins to extend

    Spoiler flaps control

  • 68

    This caused turbulence on the leading edge of the blades and slows down

    Spoiler flaps control

  • 69

    This is commonly used method of speed control, and moderate size rotor of 10 to 15 feet in the diameter

    Blade pitch control

  • 70

    Rotation of the rotor is controlled by providing the rotor shaft of a brake control device to reduce the speed of the rotor at the high wind

    Brakes

  • 71

    What are the classifications of tower?

    Guyed Tower, Self-Supporting Tower

  • 72

    This is similar to those used for antennas, and the guy wires hold up the tower

    Guyed Tower

  • 73

    This is commonly used for smaller systems

    Self-supporting tower

  • 74

    What are the two self supporting tower?

    pole tower, Tubular, steel tower

  • 75

    They are lower cost, but shorter life in time. They also require guy wire for additional support.

    Pole tower

  • 76

    They are more expensive, but aesthetically pleasing in appearance

    Tubular, steel tower

  • 77

    Efficiency of piston

    80%

  • 78

    Efficiency a propeller

    60%

  • 79

    Efficiency of double acting piston

    85%

  • 80

    Efficiency of the spiral wheel

    60%

  • 81

    Basically consists of a coil or loop of wires that rotates between the north and the south poles of a magnet

    DC generator

  • 82

    An AC generator that uses electronic dial to change the current from AC to DC

    Automobile alternators

  • 83

    It has a state tour and a rotor, just like a standard AC generator, and the magnetic field is induced through an electromagnetic interaction with the state tour

    Induction generator

  • 84

    Most commonly used type of generator among AC generators

    Synchronous generator

  • 85

    It stores the power generated by win turbine

    Battery

  • 86

    Common type of lead acid battery design to provide large amount of electrical current in a very short period of time

    Commercial or automotive battery

  • 87

    In selecting site for wind turbine, what should be the measurement that the wind should be able to blow freely over an area

    300 m

  • 88

    It converts mechanical power to electrical power

    Generator

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    問題一覧

  • 1

    Developed due to atmospheric temperature difference generated by the sun, which turn rises to partial difference

    Wind

  • 2

    It is the use of wind energy to generate useful work. It is mostly used to generate electricity.

    Wind power

  • 3

    It is generated almost completely with winter vines, generally group into wind farms, and connected to the electrical grid

    Wind power

  • 4

    What is the total power produced by the wind power in the Philippines?

    443 MW

  • 5

    How many percentage does the wind power in the Philippines account to the total capacity of the energy sources?

    1.6%

  • 6

    It converts the wind, kinetic energy into electrical energy using fast rotating rotor

    Wind turbine

  • 7

    Wind turbine, usually have a propeller type with diameter of

    6 to 12 feet

  • 8

    How much energy does the win turbine generates?

    200 to 1500 W or even higher

  • 9

    What are the two sources of wind?

    North east monsoon, Southwest monsoon

  • 10

    North east monsoon is also known as

    Amihan

  • 11

    Southwest monsoon also known as

    Habagat

  • 12

    When does north East Munson usually happens

    October to April

  • 13

    When is the maximum intensity of north east monsoon?

    January

  • 14

    When does Southwest moonstone happens?

    June to September

  • 15

    What month does the maximum intensity of Southwest monsoon happens?

    August

  • 16

    What are the two areas for wind energy system Visayas

    Iloilo, Guimaras

  • 17

    It is a very old technology that uses the wind to either milligrams into floor drive machines or remove water

    Windmill

  • 18

    What is a windmill

    Windmill is an old technology in which it does not produce electricity, but uses mechanical energy . The torque or the rotational force of the windmill moves through the years to the Millstone, this allow to grind grains driveshaft to pump water, and even run every reciprocating so producing a paper

  • 19

    Explain wind turbine

    Winter band is a machine that generates electricity in which through our rotating camshaft so this camshaft passes our wire back and forth through a magnetic field generating an electric current

  • 20

    This rotates, the turbine

    Tail vanes

  • 21

    This are turbines that have three or four blades and operate up wind with the turbine by voting at the top of the tower so the blades face into the wind

    Horizontal axis wind turbines

  • 22

    Explain vertical axis to win turbines

    These turbines are Omni directional meaning they don’t have the need to be adjusted two point into the wind operate

  • 23

    Explain Magnus, vertical axis, wind, turbine,

    So this turbine is the next generation turbine that leverages the Magnus effect the optimize power generation in varying wind condition, so it offers lower manufacturing cost, reduce noise and lower risk bird strikes. I like to traditional wind turbines at design to withstand wins up to 340 KPH and remains operational during typhoons.

  • 24

    Give the advantages of wind energy systems

    Clean , Safe , Economic, Cheap , Abundant, Sustainable, Varied application

  • 25

    Enumerate limitations of wind, energy systems

    Site specific, Need storage, Back up system, High initial cost

  • 26

    Applicable or adaptable only in areas with the wind speed of 3 m/s or higher

    Site specific

  • 27

    It requires water reserve or batteries due to considerable power supply variation

    Need storage

  • 28

    Requires back up system for area where wind supply is low

    Back up system

  • 29

    Which makes it not attractive investment in competition with other alternative energy

    High initial cost

  • 30

    Machine that converts skin attic energy from the wind into mechanical energy to pump water through windowsills to obtain source of freshwater from wells and for draining lying areas of land

    Wind pump

  • 31

    It catches the wind and start to Spin

    Wind blades

  • 32

    This spinning happens around the central part

    Rotor

  • 33

    It is connected from the road, or that helps speed up the movement

    Gears

  • 34

    This fast spinning make this work, pulling water up from the ground

    Pump

  • 35

    The water is pushed through pipes to where it’s needed like for farming

    Water flow

  • 36

    What is the wind power per square meter per cross-sectional area of the wind bump rotor?

    9 W per square meters

  • 37

    Wind bump, without a complicated guiding device can only extract about how many percentage of the wind kinetic energy

    50%

  • 38

    In horizontal axis rotor, what is the direction of the wind?

    Parallel

  • 39

    Come on used for pumping water since it produces higher power output per unit size of the machine

    Horizontal axis

  • 40

    What direction should be the vertical axis rotation of the rotor to the wind?

    Perpendicular

  • 41

    It is a rotor in which the axis of the rotation of the rotor is bone tied to the surface of the earth, and perpendicular with the wind direction

    Crosswind rotor

  • 42

    What are the classifications of wind pump according to the speed of the rotor?

    High speed, Low speed

  • 43

    This is a wind pump with view number of blades they are rotary usually having up to eight blades and they are normally characterized below torque fast speed rotor

    High speed

  • 44

    Awin pump with construction having several numbers of blades usually 18 to 48 blades they are characterized by high torque low speed rotor

    Low speed

  • 45

    Basic component parts of wind pump

    Rotor assembly, Head assembly, Tail Vane assembly, Pump assembly

  • 46

    It converts kinetic energy of the wind, the mechanical energy

    Rotor assembly

  • 47

    Support the rotor and the tail vein. Assemblies

    Head assembly

  • 48

    Power at the rotor is converted to reciprocating motion through

    Transmission Drive

  • 49

    This makes the rotor perpendicularly face the incoming win this can be adjusted, depending on the desired rotor orientation

    Tail vane assembly

  • 50

    Used to elevator rotor to desired elevation to obtain the wind speed necessary for water, pumping

    Tower assembly

  • 51

    Used to lift water from the source at the desired rate and head

    Pump assembly

  • 52

    It is the amount of energy available from the wind within a unit time

    Wind power

  • 53

    What is the ratio of the mechanical power actually attained directly from the rotor and the wind power?

    Power Coefficient

  • 54

    It is the ratio between the torque and the rotor and the reference torque

    Torque coefficient

  • 55

    It is the ratio of the circumferential velocity at the tip of the rotor to the free stream velocity

    Tips speed ratio

  • 56

    It is the surface of the blade over which the air flows

    Air foil

  • 57

    It is the force measured perpendicular to the air flow

    Lift

  • 58

    Where is the force measured parallel with the flow?

    Drag

  • 59

    Where is the angle required to lift an air foil measured between the cord line and direction of the airflow?

    Angle of attack

  • 60

    Where is the ratio of the drug coefficient to the lift coefficient?

    CD/CL ratio

  • 61

    Where is the amount of power required in lifting a given rate of water at the given height or lift?

    Hydraulic power

  • 62

    It is the ratio of the power generated in pumping water to the power received by the router

    Overall system efficiency

  • 63

    It is the ratio of the total capacity to the displacement volume of the pump

    Pump, volumetric, efficiency

  • 64

    It is the amount of the road or surface area, facing the wind in proportion swept area of the rotor

    Solidity

  • 65

    This relies upon the wind, speed pressure in the rotor to turn its sideways or upward away from the wind

    Variable axis control

  • 66

    The blades are actually blended away from the wind as the wind speed increases. This is only feasible for downwind machine since the blade would hit the lower and upwind machines.

    Coning speed control

  • 67

    This slows the rotor blades by disrupting the smooth airflow over them as the wind speed picks up and approaches the cat outspeed as spring restrained, airbrake or flap, begins to extend

    Spoiler flaps control

  • 68

    This caused turbulence on the leading edge of the blades and slows down

    Spoiler flaps control

  • 69

    This is commonly used method of speed control, and moderate size rotor of 10 to 15 feet in the diameter

    Blade pitch control

  • 70

    Rotation of the rotor is controlled by providing the rotor shaft of a brake control device to reduce the speed of the rotor at the high wind

    Brakes

  • 71

    What are the classifications of tower?

    Guyed Tower, Self-Supporting Tower

  • 72

    This is similar to those used for antennas, and the guy wires hold up the tower

    Guyed Tower

  • 73

    This is commonly used for smaller systems

    Self-supporting tower

  • 74

    What are the two self supporting tower?

    pole tower, Tubular, steel tower

  • 75

    They are lower cost, but shorter life in time. They also require guy wire for additional support.

    Pole tower

  • 76

    They are more expensive, but aesthetically pleasing in appearance

    Tubular, steel tower

  • 77

    Efficiency of piston

    80%

  • 78

    Efficiency a propeller

    60%

  • 79

    Efficiency of double acting piston

    85%

  • 80

    Efficiency of the spiral wheel

    60%

  • 81

    Basically consists of a coil or loop of wires that rotates between the north and the south poles of a magnet

    DC generator

  • 82

    An AC generator that uses electronic dial to change the current from AC to DC

    Automobile alternators

  • 83

    It has a state tour and a rotor, just like a standard AC generator, and the magnetic field is induced through an electromagnetic interaction with the state tour

    Induction generator

  • 84

    Most commonly used type of generator among AC generators

    Synchronous generator

  • 85

    It stores the power generated by win turbine

    Battery

  • 86

    Common type of lead acid battery design to provide large amount of electrical current in a very short period of time

    Commercial or automotive battery

  • 87

    In selecting site for wind turbine, what should be the measurement that the wind should be able to blow freely over an area

    300 m

  • 88

    It converts mechanical power to electrical power

    Generator