When an airplane is rotating about the longitudinal axis (roll), the down going wing:A) generates a higher lift compared to the up going wing.B) creates a force to increase the roll rate.C) has a reduced angle of attack.D) creates a damping moments, which resists the rolling motion.
Answers
When an airplane is rotating about the longitudinal axis (roll), the down going wing (Option A) generates a higher lift compared to the up going wing.
When an airplane is rotating about its longitudinal axis, the phenomenon is called roll. During roll, the down-going wing moves faster than the up-going wing, which affects the airflow over each wing differently.
This results in different lift forces acting on each wing, leading to a change in the aircraft's bank angle. We need to understand the aerodynamics of roll. As the airplane rolls, the angle of attack of the wings changes.
The down-going wing experiences an increase in angle of attack, while the up-going wing experiences a decrease. This difference in angle of attack leads to a difference in lift forces acting on the wings.
The down-going wing generates a higher lift force compared to the up-going wing due to its higher angle of attack. This higher lift force creates a torque that causes the aircraft to continue rolling. Therefore, option A is correct.
In summary, during roll, the down-going wing generates a higher lift force compared to the up-going wing due to its higher angle of attack. This higher lift force creates a torque that causes the aircraft to continue rolling.
The difference in lift forces generated by the wings creates a damping moment that resists the rolling motion.
For more question on "Aeroplane Roll" :
https://brainly.com/question/28764489?source=archive
#SPJ11
Related Questions
A rigid tank contains 10kg of R134a initially at 20 degrees and 180 kPa. The R134a is now cooled while being stirred until its pressure drops to 100kPa. Determine the entropy change of the R134a during this process.
Answers
The entropy change of the R134a during this process is 0.035 KJ
What is entropy change?Entropy change refers to the measure of the degree of disorder or randomness in a thermodynamic system. It is a concept in thermodynamics that describes the amount of energy that is unavailable for doing work in a given process.
The entropy change of a system can be calculated by subtracting the initial entropy of the system from its final entropy.
T = PV/(mR)
T1 = 180 / 10 * 0.08314
T2 = P2V/(mR)
Now T1 = T2
such that
0.08314 ln (100kpa / 180)
= 0.035 KJ
The entropy change of the R134a during this process is 0.035 KJ
Read more on entropy change herehttps://brainly.com/question/6364271
#SPJ1
1) a field is bounded by an irregular hedge running between points e and f and three straight fences fg, gh and he. the following measurements are taken: ef = 167.76 m, fg = 105.03 m, gh = 110.52 m, he = 97.65 m and eg = 155.07 m offsets are taken to the irregular hedge from the line ef as follows. the hedge is situated entirely outside the quadrilateral efgh. e (0 m) 25 m 50 m 75 m 100 m 125 m 150 m f(167.76 m) 0 m 2.13 m 4.67 m 9.54 m 9.28 m 6.39 m 3.21 m 0 m calculate the area of the field to the nearest m2 .
Answers
The area of the field is approximately XYZ square meters. To calculate the area, we can use the formula for the area of a quadrilateral.
In this case, the quadrilateral EFHG is irregular, so we need to divide it into two triangles: EFH and EGH.
First, let's calculate the area of triangle EFH. We can use the formula for the area of a triangle: A = 0.5 * base * height. The base of triangle EFH is EF, which is 167.76 m. The height can be found by subtracting the offset at point F from the offset at point E, giving us 3.21 m. Plugging these values into the formula, we get: A = 0.5 * 167.76 m * 3.21 m = XYZ square meters.
Next, let's calculate the area of triangle EGH. The base of triangle EGH is EG, which is 155.07 m. The height can be found by subtracting the offset at point G from the offset at point E, giving us 9.54 m. Plugging these values into the formula, we get: A = 0.5 * 155.07 m * 9.54 m = XYZ square meters.
To find the total area of the field, we need to add the areas of the two triangles: XYZ square meters + XYZ square meters = XYZ square meters. Therefore, the area of the field is approximately XYZ square meters.
Know more about quadrilateral here:
https://brainly.com/question/29934291
#SPJ11
Choose the correct rewritten sentence for “Scientists have discovered that the climate of our planet is becoming warmer every year.
Answers
Technician A says the term hot wire refers to the section of the circuit after the load or electric device. Technician says the ground wire refers to the section of the circuit after the load or electric device. Who is right?
Answers
Answer:
Technician B
Explanation:
In simplistic terms, the "hot wire" connects the load device to the source of electrical energy. The ground wire provides the return path for current from the load device to the energy source. In many circuits, the "ground wire" is at, near, or defined as "ground" potential (the actual potential of the Earth).
Technician A seems to be confused. Technician B is more correct.
A manufacturer begins with 25-cm x 15-cm rectangular pieces of plate steel 8-mm thick (it weighs 62.8 kg/m2 ). The corners are rounded off with a 2-cm radius and a 3-cm radius hole is drilled in the center. Use the weight per area value given above to calculate the weight of 590 of the finished plates, rounded to the nearest kilogram for shipping purposes. Note: Consider the units of measure since they do not match the units in the steel design table.
Answers
A manufacturer begins with 25-cm x 15-cm rectangular pieces of plate steel 8-mm thick (it weighs 62.8 kg/m2 ). The corners are rounded off with a 2-cm radius and a 3-cm radius hole is drilled in the center.
The area of the rectangular plate with rounded corners is given by
A = (25-4r)(15-4r) + (πr^2)/2 - πr^2A = 375 - 100r + 8π
And, the weight of one such plate is given by
W = A × 0.008 × 62.8W = (375 - 100r + 8π) × 0.008 × 62.8W = 18.732 - 5.024r + 0.5024π
The manufacturer has 590 such plates,
So, the total weight of 590 such plates is590 × (18.732 - 5.024r + 0.5024π) kg≈ 11015 kg (rounded to the nearest kilogram)
Thus, the weight of 590 of the finished plates, rounded to the nearest kilogram for shipping purposes, is approximately 11015 kg.
Learn more about weight here: https://brainly.com/question/86444
#SPJ11
The car from question 3, at the top levelled area, collides with a 3-tonne stationary truck. Assume the two vehicles are now combined together in the following scenarios and Calculate;
1) What would be the velocity of the car moments after the collision if the car driver releases the foot off the accelerator at the time of the collision?
2) What would be the velocity of the car, 1 second after the collision if the car driver maintained the force applied by the engine?
Answers
The momentum before the collision is equal to the momentum after the collision. That means Momentum before collision = Momentum after collision
m₁v₁ + m₂v₂ = (m₁ + m₂)vf
In the above equation, v₁ = velocity of the car before the collision, m₁ = mass of the car, m₂ = mass of the truck, v₂ = 0 because the truck is stationary before the collision and vf = velocity of the combined system after the collision.
1) What would be the velocity of the car moments after the collision if the car driver releases the foot off the accelerator at the time of the collision?
m₁v₁ + m₂v₂ = (m₁ + m₂)vf1
500 × 20 + 3000 × 0 = (1500 + 3000) vf
30000 = 4500vf
vf = 6.67 m/s
Now that the car has collided with the truck, the velocity of the combined system is 6.67 m/s.
2) What would be the velocity of the car, 1 second after the collision if the car driver maintained the force applied by the engine?
m₁v₁ + m₂v₂ = (m₁ + m₂)vf
1500 × 20 + 3000 × 0 = (1500 + 3000) vf
30000 = 4500vfvf = 6.67 m/s
Now, if the car driver maintains the force applied by the engine, the acceleration of the combined system will be: Acceleration = Force / Total mass of the system
Force = (mass of the car) × (acceleration)
F = 1500a
Total mass of the system = mass of the car + mass of the truck = 1500 + 3000 = 4500 kgF / m = a1500a / 4500 = a/3
In one second, the final velocity of the system will be: v = u + at
v = 6.67 + a Second scenario 1 second after the collision, if the car driver maintains the force applied by the engine, the acceleration of the combined system will be 6.67 / 3 = 2.22 m/s²F / m = a1500a / 4500 = 2.22a = 0.74 m/s²v = u + atv = 6.67 + 0.74v = 7.41 m/s
Therefore, the velocity of the car one second after the collision if the car driver maintains the force applied by the engine would be 7.41 m/s.
To know more about momentum visit :-
https://brainly.com/question/24030570
#SPJ11
1. Discuss inverse square law? Corire law of illustration. 2. A lamp fitted with 120 degrees angled cone reflector illuminates circular area of 200 meters in diameter. The illumination of the disc increases uniformly from 0.5 meter-candle at the edge to 2 meter-candle at the center. Determine: i) the total light received ii) Average illumination of the disc ii) Average candle power of the source. 3. Discuss the floodlighting with suitable diagrams.
Answers
1. Inverse square law states that the intensity of light varies inversely with the square of the distance from the source. It can be represented mathematically as: I = k/d², where I is the intensity of light, d is the distance from the source and k is a constant of proportionality.
This law is illustrated by the fact that as the distance from the source increases, the intensity of light decreases proportionally to the square of the distance.2. Given, diameter of the circular area, d = 200 mRadius of the circular area, r = d/2 = 100 mLamp illuminates a circular area of 200 meters in diameter with the illumination of the disc increasing uniformly from 0.5 meter-candle at the edge to 2 meter-candle at the center. The average illumination can be calculated as follows:Average illumination of the disc, I = (0.5 + 2)/2 = 1.25 meter-candleThe total light received can be calculated as follows:Total light received = (2πr² × I) = (2 × π × 100² × 1.25) = 78,540 lumensAverage candle power of the source can be calculated as follows:Average candle power = Total light received/4π = 78,540/4π = 6250 lumens3. Floodlighting is the use of high-intensity artificial light to illuminate a large area.
The purpose of floodlighting is to provide a bright and uniform light over a large area, typically for outdoor sports fields, stadiums, and other large events. It can be achieved using various types of lighting fixtures, such as floodlights, spotlights, and high-intensity discharge lamps. Suitable diagrams for floodlighting are shown below:
To know more about varies here:
brainly.com/question/6499629
#SPJ11
the institute of electrical and electronics engineers is responsible for standards in which two areas? (choose two.)
Answers
IEEE is responsible for standards in the areas of electrical and electronics engineering.
What is engineer?
Engineers are professionals who create, design, analyse, construct, test, and evaluate machines, complex systems, structures, gadgets, and materials to satisfy functional objectives and requirements while taking into account the practicality, regulation, safety, and cost constraints. The Latin words ingeniare as well as ingenium are the origin of the English word engineer. A four-year bachelor's degree in engineering, or in some jurisdictions, a master's degree in engineering, along with four to six years of peer-reviewed professional practise, and passing the engineering board examinations make up the fundamental requirements for becoming an engineer. A person who is registered with an engineering council is typically considered a professional engineer. The link between scientific advancements as well as their subsequent applications to meet the needs of people and businesses and improve quality of life is formed by engineers' work.
To learn more about engineer
https://brainly.com/question/17169621
#SPJ4
For independent control of the engineer's mix and the musician's mix, heaphone sends should be?
Answers
For independent control of the engineer's mix and the musician's mix, headphone sends should be split. Headphone sends should be split if there is a need for independent control of the engineer's mix and the musician's mix.
When the headphone sends are split, it means that different audio signals are being sent to each musician. As a result, each musician has control over their mix, and the engineer has control over the final mix.
The headphone sends can be split in a variety of ways. There are dedicated headphone mixers available on the market, which can provide separate mixes to each musician. Alternatively, individual mixer sends can be used to create separate headphone mixes.
This can be achieved by assigning each musician a mixer send, which is then used to send a unique mix to each musician's headphones. In conclusion, headphone sends should be split if there is a need for independent control of the engineer's mix and the musician's mix. This can be accomplished using dedicated headphone mixers or individual mixer sends.
To know more about engineer's visit:
https://brainly.com/question/31140236
#SPJ11
A steel spur pinion has a diametral pitch of 10 teeth/in, 18 teeth cut full-depth with a 20° pressure angle, and a face width of 1 in. This pinion is expected to transmit 2 hp at a speed of 600 rev/min. Determine the bending stress P. 1 ) *assume no Kf effect
Answers
To determine the bending stress of a steel spur pinion with a diametral pitch of 10 teeth/in, 18 teeth cut full-depth with a 20° pressure angle, and a face width of 1 in, transmitting 2 hp at 600 rev/min, assume no Kf effect.
To determine the bending stress of the steel spur pinion, we need to use the formula P = (HP x 63025) / (N x Y), where P is the bending stress, HP is the power transmitted in horsepower, N is the rotational speed in revolutions per minute, and Y is the Lewis form factor.
In this case, the power transmitted is 2 hp and the speed is 600 rev/min.
To find the Lewis form factor, we first need to calculate the pitch diameter of the pinion, which is (Number of teeth / Diametral pitch) = 1.8 inches.
Next, we can use the pitch diameter and pressure angle to find the Lewis form factor from a table or graph.
For a 20° pressure angle and 10 teeth/inch, the Lewis form factor is 1.736.
Plugging these values into the formula, we get P = (2 x 63025) / (600 x 1.736) = 36.27 psi.
Therefore, the bending stress of the steel spur pinion is 36.27 psi.
For more such questions on Bending stress:
https://brainly.com/question/30089735
#SPJ11
You have been working at a manufacturing site but have been
transitioned to a different part of the site with new responsbilities. When
should your employer train you on any chemical hazards in this new
responsibility?
Answers
Answer: The Hazard Communication Standard (HCS), 29 CFR 1910.1200 (h), requires all employers to provide information and training to their employees about the hazardous chemicals to which they may be exposed at the time of their initial assignment and whenever a new hazard is introduced into their work area.
Explanation: choose me as Brainliest
The required, if our new responsibilities involve working with hazardous chemicals, your employer should provide training on any chemical hazards before you begin working in that area
What are chemical hazards?Chemical hazards are any physical, chemical, or toxicological properties of a chemical that may cause harm to humans or the environment.
Here,
According to the Occupational Safety and Health Administration (OSHA) regulations, employers are required to provide hazard communication training to employees who may be exposed to hazardous chemicals as part of their job duties. The training must be provided at the time of initial assignment to a job involving exposure to hazardous chemicals, and whenever a new physical or health hazard is introduced to the workplace.
Therefore, if our new responsibilities involve working with hazardous chemicals, your employer should provide training on any chemical hazards before you begin working in that area. If any new hazardous chemicals are introduced into the workplace after your initial training, your employer should provide additional training on those specific hazards.
Learn more about working responsibilities here:
https://brainly.com/question/14261910
#SPJ2
Distinguish between systems analysis and systems design?
Answers
Answer:
System analysis can be defined as a deep analysis of a part of the structure of a module that has been designed before. System design means to make any module or a part of the structure from scratch and build it completely without estimation.
Explanation:
In Python when we say that a data structure is immutable, what does that mean?
Answers
When we say that a data structure is immutable in Python, it means that its values cannot be changed after it has been created. Any attempt to modify an immutable object will result in the creation of a new object with the updated value, rather than changing the original object. This property of immutability is useful for ensuring data integrity and avoiding accidental modifications to important data. Examples of immutable data structures in Python include strings, tuples, and frozensets.
In Python, an immutable data structure is a data structure that cannot be changed once it is created. This means that if a value is assigned to an immutable data structure, it cannot be modified later, and any operation that attempts to modify the data structure will create a new object with the modified value.For example, tuples in Python are immutable data structures. Once a tuple is created, its contents cannot be changed. If you try to modify a tuple, Python will raise a TypeError.
my_tuple = (1, 2, 3)
my_tuple[0] = 4 # This will raise a TypeError because tuples are immutable
In contrast, mutable data structures, such as lists and dictionaries, can be modified after they are created. This means that you can add, remove, or modify elements in a list or dictionary after they are created.Overall, immutability is a useful property in programming because it makes it easier to reason about the behavior of code and reduces the risk of unintended side effects. In Python, when we say that a data structure is immutable, it means that the elements within the data structure cannot be changed or modified after they are created. Some examples of immutable data structures are strings and tuples. Once an immutable object is created, its state and contents remain constant throughout its lifetime.
To learn more about Python click on the link below:
brainly.com/question/30427047
#SPJ11
True or false?Inventory-risk costs are a form of carrying costs.
Answers
or...................
Answer:
i believe it is true
Explanation:
A city is experiencing a windstorm. The wind has blown away some of the houses in that city. What load bearing factor did the architects of these
houses not calculate correctly?
OA material strength
OB. elasticity
oc design load
OD. safety factor
Answers
Answer:
oa
Explanation:
Answer:
safety factor
Explanation:
i got it correct on the test
The two major forces opposing the motion of a vehicle moving on a level road are the rolling resistance of the tires, Fr, and the aerodynamic drag force of the air flowing around the vehicle, Fd, given respectively by Fr, = fW, Fd= CdA1/2 rhoV2 where f and Cd are constants known as the rolling resistance coefficient and drag coefficient, respectively, W and A are the vehicle weight and projected frontal area, respectively, V is the vehicle velocity, and rho is the air density. For a passenger car with W = 3,550 lbf, A = 23.3 ft^2, and Cd = 0.34, and where f = 0.02 and rho = 0.08 lbm/ft^3.
Required:
Determine the power required, in HP, to overcome rolling resistance and aerodynamic drag when V is 55 mph.
Answers
Answer:
The power required to overcome rolling resistance and aerodynamic drag is 19.623 h.p.
Explanation:
Let suppose that vehicle is moving at constant velocity. By Newton's Law of Motion, the force given by engine must be equal to the sum of the rolling resistance and the aerodynamic drag force of the air. And by definition of power, we have the following formula:
\(\dot W = \left(f\cdot W +\frac{\rho\cdot C_{D}\cdot A\cdot v^{2}}{2\cdot g_{c}} \right)\cdot v\) (1)
Where:
\(\dot W\)- Power, in pounds-force-feet per second.
\(f\) - Rolling resistance coefficient, no unit.
\(W\) - Weight of the passanger car, in pounds-force.
\(\rho\) - Density of air, in pounds-mass per cubic feet.
\(C_{D}\) - Drag coefficient, no unit.
\(A\) - Projected frontal area, in square feet.
\(v\) - Vehicle speed, in feet per second.
\(g_{c}\) - Pound-mass to pound-force ratio, in pounds-mass to pound-force.
If we know that \(f = 0.02\), \(W = 3,550\,lbf\), \(\rho = 0.08\,\frac{lbm}{ft^{3}}\), \(C_{D} = 0.34\), \(A = 23.3\,ft^{2}\), \(v = 80.685\,\frac{ft}{s}\) and \(g_{c} = 32.174\,\frac{lbm}{lbf}\), then the power required by the car is:
\(\dot W = \left(f\cdot W +\frac{\rho\cdot C_{D}\cdot A\cdot v^{2}}{2\cdot g_{c}} \right)\cdot v\)
\(\dot W = 10901.941\,\frac{lbf\cdot ft}{s}\)
\(\dot W = 19.623\,h.p.\)
The power required to overcome rolling resistance and aerodynamic drag is 19.623 h.p.
Ferroconcrete is reinforced concrete that combines concrete and ________. A. Lead c. Copper b. Iron d. Aluminum.
Answers
Answer:
B. Iron
Explanation:
took the test.
A linear frequency-modulated signal makes a good test for aliasing, because the frequency moves over a range. This signal is
Answers
quy trình sản xuất bao bì plastic dạng túi
Answers
a) Volume Fraction of glass fiber and epoxy matrix
b) The density of the composite
c) The ratio of the load carried by the fiber to that carried by
the matrix.
Note
The density of epoxy =1.3 gm/cm3
The density of glass =2.2 gm/cm3 E of epoxy = 2.75 GPa Eofglass =380GPa
Which type of hybrid vehicle is propelled by only an electric motor and does not require a traditional transmission to drive the wheels
Answers
Answer:
Dual-Mode Hybrid
Explanation:
The type of hybrid vehicle propelled by only an electric motor and does not require a traditional transmission to drive the wheels is known as "DUAL-MODE HYBRID."
Dual-Mode Hybrid is a type of Hybrid Electric Vehicle (HEV) which contains a separate generator consisting of rechargeable batteries. The engine ensures the wheels and the generator are moved; thereby, the electric motor and the batteries are fully powered.
A good example is a Toyota Prius, where during driving conditions, only the electric motor drives the wheels, in which the batteries supply the car with power.
This figure represents a portable ramp that is being recovered on all sides. How much material is needed to recover the ramp?
A. 1288 m²
B. 1416 m²
C. 1443 m²
D. 1680 m²
Answers
the answer is 1288 m2
Explanation:
i took the k12 test
Answer: The answer is 1288
Explanation: I took the test and it was right
which means of influencing fire dynamics is typically used in wildland and liquid or gas fires
Answers
The means of influencing fire dynamics that is typically used in wildland and liquid or gas fires is called "fire suppression."
Fire suppression is the act of extinguishing or controlling a fire to prevent it from spreading or causing further damage. This can be done through the use of water, foam, or other extinguishing agents. In wildland fires, fire suppression may also involve the use of fire breaks, which are barriers that are created to prevent the fire from spreading. In liquid or gas fires, fire suppression may involve the use of foam or other agents that are designed to smother the fire and prevent it from reigniting.
Learn more about fire suppression here:https://brainly.com/question/29634607
#SPJ11
Two ways of sawing logs are?
Answers
Answer:
Plain Sawn. At least 95 percent of all hardwood lumber commercially produced in the U.S. is flat or plain sawn. ...
Quarter Sawn. In this method, the log actually is cut into quarters, then sawn quarter by quarter. ...
Explanation:
A Frenkel defect is composed with which of the following? (a) A cation interstitial and a cation vacancy (b A cation interstitial and an anion interstitial (c) A catio (d) An anion interstitial and an anion vacancy
Answers
A Frenkel defect is composed with A cation interstitial and a cation vacancy.
What is a Frenkel defect composed of?A Frenkel defect, named after its discoverer Yakov Frenkel, is a particular kind of point defect in crystalline solids used in crystallography. The defect develops when an atom or smaller ion (often a cation) vacates its position in the lattice, leaving a vacancy, and then settles in the vicinity to produce an interstitial.
Ionic crystals with the Frenkel defect have an anion that is bigger than a cation. The solid crystal loses both the anion and the cation. The smaller ion cation typically breaks free from the original lattice structure.
straightforward interstitial defect An atom shifts from its usual lattice location to one of the interstitial sites, causing a specific type of point defect. In crystals with this flaw, the density of the crystal does not change. generally demonstrated by non-ionic solids.
To learn more about Frenkel defect refer to:
https://brainly.com/question/4068106
#SPJ4
how to study thermodynamics?
Answers
It is study of the relationships between heat, temprature, work and energy
What I recommend is that you go through you thermodynamics book and read it carefully highlighting the important points and summarizing them in a spare notebook. The first few chapters are full of indroductory concepts such as the state of a system, processes, closed and open systems, etc. That I reccomend you memorize(with understanding ofcourse) as these are carried on all throughout.
As chapters get more complex I recommend flow charts and mind maps with as much condensed information as possible.
Hope this helps <3
Help me and mark as brainliest plz
what do you need to craft netherite ingots come on man you should know this
Answers
4 netherite scrap and 4 gold
in a crafting table
Hey guys can anyone list chemical engineering advancement that has been discovered within the past 20 years
Answers
Nanopesticides. The world population keeps growing. ...
Enantio selective organocatalysis. ...
Solid-state batteries. ...
Flow Chemistry. ...
Porous material for Water Harvesting. ...
Directed evolution of selective enzymes. ...
From plastics to monomers. ...
If 540 J of energy is absorbed by a resistor in 3.6 min, what is the power
delivered to the resistor in watts?
Answers
Power delivered to the resistor in watts is 2.5 watts
Given:
Energy absorbed by resistor = 540 J
Time taken by resistor = 3.6 min
Find:
Power delivered to the resistor in watts
Computation:
Time taken by resistor = 3.6 min
Time taken by resistor = 3.6 × 60
Time taken by resistor = 216 sec
We know that;
Energy = Power × Time
So,
540 = Power × 216
Power = 540 / 216
Power = 2.5 watts
Learn more:
https://brainly.com/question/2581527?referrer=searchResults
Can you answer what is attached.
Answers
charging method .Constant current method
Answers
Answer:
There are three common methods of charging a battery; constant voltage, constant current and a combination of constant voltage/constant current with or without a smart charging circuit.
Constant voltage allows the full current of the charger to flow into the battery until the power supply reaches its pre-set voltage. The current will then taper down to a minimum value once that voltage level is reached. The battery can be left connected to the charger until ready for use and will remain at that “float voltage”, trickle charging to compensate for normal battery self-discharge.
Constant current is a simple form of charging batteries, with the current level set at approximately 10% of the maximum battery rating. Charge times are relatively long with the disadvantage that the battery may overheat if it is over-charged, leading to premature battery replacement. This method is suitable for Ni-MH type of batteries. The battery must be disconnected, or a timer function used once charged.
Constant voltage / constant current (CVCC) is a combination of the above two methods. The charger limits the amount of current to a pre-set level until the battery reaches a pre-set voltage level. The current then reduces as the battery becomes fully charged. The lead acid battery uses the constant current constant voltage (CC/CV) charge method. A regulated current raises the terminal voltage until the upper charge voltage limit is reached, at which point the current drops due to saturation.