Answers
The Estimated thickness of the condensate film is 0.09mm.
Thickness of condensate filmGiven:
L=1m
Surface temperature =117°C
Properties of steam at p=2.45 bar
Hence:
T sat =126.7°C
h f g =2183.5×10³J/kg
Mean temperature, T f=126.7+117÷2
T f =121.85°C
Properties of water at T f=121.85°C are:
p=943kg/m³
u=237×10^-6 kg/ms
k f=0.686W/m. K.
Thickness of condensate at x=0.2m
=[4kf (Tsat-Ts) ux÷p(p-pv)gh fg]^1/4
Neglect pv and from the formula
[4×0.686×(126.7-117)×237×10^-6×0.2÷(943)²×9.81×2183.5×10³]^1/4
=9.02×10^-5
=0.09mm
Therefore the Estimated thickness of the condensate film is 0.09mm.
Learn more about Thickness of condensate film here:https://brainly.com/question/13390675
#SPJ1
Related Questions
given a string s of characters, a subsequence of s, defined by the indices i 1, i 2, ..., i m , is said to be a repeated subsequence if you can find another sequence of indices j 1, j 2, ..., j m, such that s[i k]
Answers
Answer:
= s[j k] for all 1 <= k <= m.
In other words, a repeated subsequence is a sequence of characters within the original string that appears in the same order at least twice. The indices i1, i2, ..., im refer to the positions of the characters in the original string that make up the repeated subsequence, and the indices j1, j2, ..., jm refer to the positions of the same characters in the second occurrence of the repeated subsequence.
application's of kirchoff's law
Answers
a voltage amplifier with an input resistance of 40 kn, an output resistance of i 00 n, and a gain of 300 v n is connected between a 10-kn source with an open-circuit voltage of to m v and a i 00-n load. for this situation:
Answers
The current flowing through the circuit is approximately 0.4 μA.
To analyze the situation, we can use the voltage divider rule and the concept of load and source resistance to determine the voltage across the load and the current flowing through the circuit.
Given data:
Input resistance (Rin) = 40 kΩ
Output resistance (Rout) = 100 Ω
Gain (Av) = 300 V/V
Source resistance (Rsource) = 10 kΩ
Open-circuit voltage (Voc) = 20 mV
Load resistance (Rload) = 100 Ω
To calculate the voltage across the load (Vload), we can use the voltage divider rule:
Vload = Voc * (Rload / (Rsource + Rin + Rload))
Substituting the given values:
Vload = 20 mV * (100 Ω / (10 kΩ + 40 kΩ + 100 Ω))
Vload = 20 mV * (100 Ω / 50.1 kΩ)
Vload ≈ 0.04 mV
The voltage across the load is approximately 0.04 mV.
To calculate the current flowing through the circuit, we can use Ohm's Law:
I = Vload / Rload
Substituting the values:
I = 0.04 mV / 100 Ω
I = 0.4 μA
Learn more about circuit here
https://brainly.com/question/12608491
#SPJ11
In a certain week, a production schedule for a certain department shows the following parts being produced: 540 parts of type A, 1200 parts of type B, 490 parts of type C, and 780 parts of type D. The respective production times for these parts are the following: TpA = 5.28 min, TpB = 2.86 min, TpC = 4.65 min, and TpD = 3.22 min. Determine the workload for this department in hours per week.
Answers
Answer:
about 185 hours per week
Explanation:
It is convenient to let a spreadsheet form the sum of products. The total is in minutes, so needs to be divided by 60 to get hours.
About 185 hours per week are required for the given production schedule.
6. Determine the area of the largest piece of rectangular ground that can be enclosed by 120m of fencing, if part of an existing straight wall is used as one side.
Answers
The required answer is the largest piece of rectangular ground that can be enclosed by 120 meters of fencing, with part of an existing straight wall as one side, has an area of 1800 square meters by using optimization techniques.
To determine the area of the largest piece of rectangular ground that can be enclosed by 120 meters of fencing, where part of an existing straight wall is used as one side, we need to find the dimensions that maximize the area of the rectangle.
Let's assume the length of the rectangle is L and the width is W. Since one side of the rectangle is formed by an existing straight wall, we only need to fence the remaining three sides.
Given that the total length of the fencing is 120 meters, we can write the equation for the perimeter:
L + 2W = 120
To maximize the area, we need to express the area of the rectangle in terms of a single variable. We can use the equation for the perimeter to express one variable in terms of the other. Solving the equation for L, we get:
L = 120 - 2W
Now we can express the area, A, in terms of W:
A = L * W
A = (120 - 2W) * W
A = 120W - 2W^2
To find the maximum area, we can take the derivative of A with respect to W and set it equal to zero:
dA/dW = 120 - 4W = 0
Solving this equation, we find:
4W = 120
W = 30
Substituting this value back into the equation for L, we get:
L = 120 - 2(30) = 60
Therefore, the dimensions of the rectangle that maximize the area are L = 60 meters and W = 30 meters.
To find the maximum area, we substitute these values into the area equation:
A = 60 * 30 = 1800 square meters
Therefore, the largest piece of rectangular ground that can be enclosed by 120 meters of fencing, with part of an existing straight wall as one side, has an area of 1800 square meters by using optimization techniques.
Learn more about optimization techniques here:
https://brainly.com/question/28315344
#SPJ4
a) Consider an air standard otto cycle that has a heat addition of 2800 kJ/kg of air, a compression ratio of 8 and a pressure and temperature at the beginning of compression process of 1 bar, 300 k. Determine:
(i) Maximum pressure and temperature in the cycle
(ii) Thermal efficiency
(iii) Mean effective pressure.
Assume for air Cp = 1.005 kJ/kg K, Cp = 0.718 kJ/kg K and R = 287 kJ/kg K.
(b) Explain any four types of classification of an Internal combustion engines.
:
Answers
Answer:
a) i) The maximum pressure is approximately 122.37 bar
ii) The thermal efficiency is approximately 56.47%
iii) The mean effective pressure is approximately 20.974 bar
b) (b) Four types of internal combustion engine includes;
1) The diesel engine
2) The Otto engine
3) The Brayton engine
4) The Wankel engine
Explanation:
The parameters of the Otto cycle are;
The heat added, \(Q_{in}\) = 2,800 kJ/kg
The compression ratio, r = 8
The beginning compression pressure, P₁ = 1 bar
The beginning compression temperature, T₁ = 300 K
Cp = 1.005 kJ/kg·K
Cv = 0.718 kJ/kg·K
R = 287 kJ/kg·K
K = Cp/Cv = 1.005 kJ/kg·K/(0.718 kJ/kg·K) ≈ 1.4
T₂ = T₁×r^(k - 1)
∴ T₂ = 300 K×8^(1.4 - 1) ≈ 689.219 K
\(\dfrac{P_1\cdot V_1}{T_1} = \dfrac{P_2\cdot V_2}{T_2}\)
\(P_2 = \dfrac{P_1\cdot V_1 \cdot T_2}{T_1 \cdot V_2} = \dfrac{V_1}{V_2} \cdot \dfrac{P_1 \cdot T_2}{T_1 } = r \cdot \dfrac{P_1 \cdot T_2}{T_1 }\)
∴ P₂ = 8 × 1 bar × (689.219K)/300 K ≈ 18.379 bar
\(Q_{in}\) = m·Cv·(T₃ - T₂)
∴ \(Q_{in}\) = 2,800 ≈ 0.718 × (T₃ - 689.219)
T₃ = 2,800/0.718 + 689.219 = 4588.94 K
P₃ = P₂ × (T₃/T₂)
P₃ = 18.379 bar × 4588.94K/(689.219 K) = 122.37 bar
The maximum pressure = P₃ ≈ 122.37 bar
(ii) The thermal efficiency, \(\eta_{Otto}\), is given as follows;
\(\eta_{Otto} = 1 - \dfrac{1}{r^{k - 1}}\)
Therefore, we have;
\(\eta_{Otto} = 1 - \dfrac{1}{8^{1.4 - 1}} \approx 0.5647\)
The thermal efficiency, \(\eta_{Otto}\) ≈ 0.5647
Therefore, the thermal efficiency ≈ 56.47%
(iii) The mean effective pressure, MEP is given as follows;
\(MEP = \dfrac{\left(P_3 - P_1 \cdot r^k \right) \cdot \left(1 - \dfrac{1}{r^{k-1}} \right)}{(k -1)\cdot (r - 1)}\)
Therefore, we get;
\(MEP = \dfrac{\left(122.37 - 1 \times 8^{1.4} \right) \cdot \left(1 - \dfrac{1}{8^{1.4-1}} \right)}{(1.4 -1)\cdot (8 - 1)} \approx 20.974\)
The mean effective pressure, MEP ≈ 20.974 bar
(b) Four types of internal combustion engine includes;
1) The diesel engine; Compression heating is the source of the ignition, with constant pressure combustion
2) The Otto engine which is the internal combustion engine found in cars that make use of gasoline as the source of fuel
The Otto engine cycle comprises of five steps; intake, compression, ignition, expansion and exhaust
3) The Brayton engine works on the principle of the steam turbine
4) The Wankel it follows the pattern of the Otto cycle but it does not have piston strokes
Define the limitations in the operation conditions of a P-N junction
Answers
Answer:
1. Maximum forward current
2. Peak inverse voltage
3. Maximum power rating
Explanation:
The limitations in the operations of a P-N junction are as stated below.
Every P-N junction has limiting values and will give better performance if operated within this values, and if this values are exceeded the P-N junction may be destroyed
1. Maximum forward current: the highest instantaneous current the P-N junction can conduct without being destroyed
2. Peak inverse voltage: the maximum reserve voltage that can be applied without destroying the P-N junction
3. Maximum power rating: the maximum power that can be dissipated at the junction without damaging it
What are the main deposition techniques in semiconductor device fabrication?
Answers
The manufacture of integrated circuits requires the deposition of several layers made of various materials. Physical vapor deposition (PVD) and chemical vapor deposition are the two most significant deposition techniques (CVD).
What are the deposition procedures used in the production of semiconductors?Layers of metal (conducting) and dielectric (insulating) materials are created by deposition procedures and utilized to construct semiconductor devices. Several procedures are used, depending on the kind of material and structure being built.
What are the three typical deposition techniques employed in the production of semiconductors?The most significant technology in the production of semiconductors has supplanted lithography. The three types of deposition are CVD, PVD, and epitaxy. As the most significant deposition technology, CVD has supplanted PVD.
To know more about integrated circuits visit:-
brainly.com/question/13019820
#SPJ4
What
IS
a
3-phase system.
Answers
Answer:
Explanation: Three-phase power is a three-wire ac power circuit with each phase ac signal 120 electrical degrees apart
According to the video, what talents do Biomedical Engineers need? Check all that apply.
patience
customer service skills
communication skills
problem-solving skills
ability to handle complex calculations
assertiveness
Answers
patience
problem-solving skills
ability to handle complex calculations
Explanation:
Engineering's fundamental building block is arithmetic, and biomedical engineers unquestionably require solid maths abilities. Geometry and calculus are frequently used by biomedical engineers while assessing and developing medical solutions. Thus, option A,C,D is correct.
What talents do Biomedical Engineers require?To better the lives of patients, biomedical engineers analyse challenges in biology and medicine and create solutions. A good aptitude for engineering, an imaginative spirit, and a love for working in healthcare are all required for this position. The human anatomy fascinates biomedical engineers, and they enjoy addressing problems.
No more difficult than any other type of engineer, at least. For those with a talent for engineering, this field is rigorous but rewarding, even though it is generally difficult to break into. No engineering discipline is more demanding than biomedical engineering.
Therefore, patience, problem-solving skills, ability to handle complex calculations talents do Biomedical Engineers need.
Learn more about Biomedical Engineers here:
https://brainly.com/question/11617187
#SPJ2
Peter B. is admitted to a local hospital emergency room (ER) suffering from an anxiety attack. He tells the ER physician that he is anxious about a job promotion for which he is being considered. Peter’s secretary is worried about him and asks her father, Dr. K., who is on the medical staff at the hospital, to go to the ER and see how Peter is doing. Dr. K., who is often in the ER, knows all the staff and they willingly give him Peter’s chart when he asks for it. Dr. K. calls his daughter to tell her that Peter is being treated for anxiety with an anti-depressant drug and will probably be discharged. She relays this encouraging message to Peter’s boss. Peter does not receive the promotion.
a. Will it be an easy matter for Peter to prove that the ER staff caused Peter to lose his promotion? Explain your answer.
b. What precautions can be taken to avoid giving confidential information to medical personnel who have no need to see it?
c. In your opinion, should a diagnosis of anxiety be a concern for an employer? Why or why not?
Answers
a.No it will be not an easy matter for Peter to prove that the Er staff caused peter to lose his promotion
Here's why?
1)The boss may think he might not able to stretch himself in emergency situations
2)He can think he can't handle normal pressure
b.What precautions can be taken to avoid giving confidential information to medical personnel who have no need to see it?
1)Peter should not let the medical personnel about his personal life
2)He might have not said extra information about his job promotion
3)Will it be easy matter for Peter to prove that the ER staff caused Peter to lose his promotion? Explain your answer
No, it will not be easy, Peter has to prove in one or in another situation that he can face the difficulties and be able to handle anxiety attacks in the future.
Hence above answers are suitable for the given situation
To know more on how to answer paragraph questions please follow this link
https://brainly.com/question/27073860
#SPJ1
12. The new spark plug shown in the photograph above has been fouled. Which of the following is the most likely
cause?
esc
Answers
Answer:
Stuck open injector is the correct answer to this question.
Explanation:
The wet spark plug is the product of the injector stuck open. It can be observed in the exhaust system by the scent of petrol. It needs to be fixed quickly or the catalytic converter might be harmed.Another explanation may be that the engine is overloaded when you try to start the engine multiple times without firing it up. It happens frequently in winters.The signs of a fuel injector that is stuck-open or incompletely closed are very different from an injection system that is fully dead or moderately blocked up.Throughout this case, a scent of unburned fuel can be present in the passenger compartment, emanating through both the pipes, or out of the gas tank.
Determine the moment of inertia for the shaded area about the x and y axes
Answers
Explanation:
I don't understand what you asking
Assume you are an observer standing at a point along a three-lane roadway. All vehicles in lane 1 are traveling at 30mph, all vehicles in lane 2 are traveling at 45mph, and all vehicles in lane 3 are traveling at 60mph. There is also a constant spacing of 0.5mile between vehicles. If you collect spot speed data for all vehicles as they cross your observation point, for 30 minutes, what will be the time-mean speed and space-mean speed for this traffic stream?
Answers
In this scenario, vehicles in three lanes are traveling at different speeds with a constant spacing between them.
By collecting spot speed data for 30 minutes as vehicles cross a specific observation point, we can calculate the time-mean speed and space-mean speed for the traffic stream.
To calculate the time-mean speed, we need to determine the average speed of all vehicles over the given time period. Since the speeds in each lane are constant, the time-mean speed will be the average of the speeds in each lane. In this case, lane 1 has vehicles traveling at 30 mph, lane 2 at 45 mph, and lane 3 at 60 mph. Thus, the time-mean speed can be calculated by taking the average of these speeds: (30 + 45 + 60) / 3 = 45 mph.
To calculate the space-mean speed, we need to consider the average speed of vehicles at a specific location along the roadway. In this scenario, the spacing between vehicles in each lane is constant at 0.5 mile. Therefore, the space-mean speed can be calculated by dividing the total distance traveled by all vehicles in the given time period by the total time taken. Since the vehicles maintain a constant speed, the total distance traveled will be the same as the time-mean speed. Hence, the space-mean speed in this case will also be 45 mph.
In summary, for the given traffic stream with different speeds in each lane and a constant spacing between vehicles, the time-mean speed and space-mean speed are both equal to 45 mph.
Learn more about mean speed here:
https://brainly.com/question/9810346
#SPJ11
determine the components of each reaction at the ball and socket joint A and the tension in each cable necessary for equilibrium of the rod
Answers
The components of the reaction force in a ball and socket joint include the horizontal and vertical reaction forces.
What is a reaction force?A reaction force is an equal but oppositely directed force which forms a pair which the applied or action force.
Tension is a type of force which is present in a string or a rope supporting a body or object.
A ball and socket jont is a type of joint in the body which is able to rotate freely about an axis.
The components of the reaction force in a ball and socket joint include the horizontal and vertical reaction forces.
Learn more about reaction forces at: https://brainly.com/question/1013858
#SPJ1
Hey everyone!
This question is hard.
What specific fluid goes in the windshield wipers? (I never drove a car before)
And how much to put in fluid ounces? (So you don't blow a car up)
Answers
I’ve never driven either. But I’m pretty sure there is not really specific fluid you have to use. Just to name a few are Rain-X Bug Remover Windshield Washer Fluid, Prestone AS657 Deluxe 3-in-1 Windshield Washer Fluid.
For how much, there should be a little line or 3/4th of the way full.
Hope this helps!
Answer:
What specific fluid goes in the windshield wipers.
Distilled water
How much to put in fluid ounces?
There should be a tiny bit more than 3/4 of the way full.
Some analysts believe that the exclusion of some traditional partners from the "democratic camp" by the United States will deepen the gap between the two sides; the invitation of some countries or regions suspected of "democratic retrogression" will affect the "credibility" of the summit.
Answers
The exclusion of some traditional partners from the "democratic camp" by the United States will undoubtedly deepen the gap between the two sides.
About summit :
This move by the US is seen as a sign of its dissatisfaction with the policies and behavior of these countries. In addition, the invitation of some countries or regions suspected of "democratic retrogression" may lead to further erosion of the credibility of the summit in the eyes of the invited countries, as well as the international community. At the same time, it is worth noting that the United States must consider the consequences of such actions and the possible damage to its international image. If the US is seen as selectively choosing partners, it may undermine its overall influence in the world.
To know more about summit
https://brainly.com/question/16033767
#SPJ1
An IT manager for a small manufacturing company extracts the health records of all company employees from the system. The manager then sells the information to pharmaceutical companies as sales leads.
How should the actions of the IT manager be characterized?
a. Legal but unethical
b. Legal and ethical
c. Illegal and unethical
d. Illegal but ethical
Answers
The actions of the IT manager must be characterized as c. Illegal and unethical, because the extraction of the health records of all company employees from the system is not an activity assigned to him, and he is not authorized to do it. This responsibility corresponds to the human resources manager and his authorized employees.
Why is it illegal and unethical?Because when the manager extracts and sells this information to pharmaceutical companies as sales leads, he is committing a crime by exposing confidential information to unauthorized third parties.
All employees of a company that handles confidential information must sign a confidentiality agreement where they agree to protect it.
To learn more about confidentiality agreements, click here:
https://brainly.com/question/28335858
#SPJ4
You are designing a critical component to be installed in a chemical plant, where corrosion resistance and high temperature performance are critical. As a result, a fully dense material is required. Because of the materials used in the system, the part can only be produced by powder metallurgy. Which powder metallurgy process would you use to produce a fully dense component?a) Hot Isostatic Pressing b) Sinter then Metal Injection Molding c) Cold Isostatic Pressing d) Press and Sinter Processes e) Metal Injection Molding
Answers
Answer:
Yes
Explanation:
Because your installing something
The powder metallurgy process that would be used to produce a fully dense component is Hot Isostatic Pressing. The correct option is a.
What is Hot Isostatic Pressing?Hot isostatic pressing is a process used to consolidate metal powder or to remove defects in solids such as pores, voids, and internal cracks, densifying the material to 100% of its theoretical density.
Hot Isostatic Pressing (HIP) is a process used to densify powders, cast and sintered parts, and steels and superalloys in a furnace at high pressure and temperatures ranging from 900 to 1250°C.
To provide isotropic properties and 100% densification, the gas pressure acts uniformly in all directions.
Hot Isostatic Pressing is the powder metallurgy process that would be used to create a fully dense component.
Thus, the correct option is a.
For more details regarding Isostatic, visit:
https://brainly.com/question/6422997
#SPJ2
Each of the following are examples of factory overhead: (Check all that apply)
a.Indirect materials
b.Indirect labor
Answers
The following are examples of factory overhead: a) Indirect materials and b) Indirect labor.
Factory overhead, also known as manufacturing overhead, refers to the indirect costs incurred in the production process that cannot be directly attributed to a specific product. These costs are typically associated with the manufacturing facility as a whole, rather than with specific products or production runs. Examples of factory overhead costs may include rent or lease payments on the manufacturing facility, utility bills (e.g. electricity, water, and gas), property taxes, maintenance and repair costs, depreciation of manufacturing equipment, salaries of support staff (e.g. supervisors, quality control personnel), and other indirect expenses related to production.
Learn more about factory overhead: https://brainly.com/question/30365342
#SPJ11
Steam expands in a turbine from 4 MPa and 500 C and 0.5 MPa and 250C at a rate of 1350 kg/h. Heat is lost from the turbine at a rate of 25 kJ/s during the process. The power output of the turbine is
Answers
The power output of the turbine during the steam expansion process is determined as 157 kW.
Power output of the turbineThe power output of the turbine is calculated as follows;
P(out) = m'(h₁ - h₂) - Q(loss)
where;
m' is the mass flow rate (kg/s)m' = (1350 kg)/(3600 s)
m' = 0.375 kg/s
From steam table for superheated water,
h₁ at 500 ⁰C and 4 MPa = 3446 kJ/kgh₂ at 250 ⁰C and 0.5 MPa = 2961 kJ/kgP(out) = m'(h₁ - h₂) - Q(loss)
P(out) = 0.375(3446 - 2961) - 25 kJ/s
P(out) = 156.88 kJ/s = 156.88 kW ≈ 157 kW
Learn more about power output here: https://brainly.com/question/20038729
#SPJ4
A demand factor of _____ percent applies to a multifamily dwelling with ten units if the optional calculation method is used.
Answers
Class II, Division 1 locations require interlocked armor Type MC cable having an overall jacket of suitable polymeric material and provided with termination fittings and ____.
Answers
Class II, Division 1 locations require interlocked armor Type MC cable having an overall jacket of suitable polymeric material and provided with termination fittings and seals. The termination fittings are necessary to ensure a secure and reliable connection between the cable and the electrical equipment it is being connected to.
These fittings help to protect against the ingress of moisture, dust, and other contaminants that could potentially compromise the safety and performance of the electrical system. In addition to termination fittings, the cable should also be equipped with seals to further enhance the protection against environmental hazards. These seals are typically made of durable materials such as rubber or silicone and are installed at the points where the cable enters or exits the equipment.
They provide an extra layer of insulation and help to maintain the integrity of the system. Overall, the use of termination fittings and seals is essential in Class II, Division 1 locations to ensure the safety and reliability of the electrical installation.
To know more about termination visit :
https://brainly.com/question/11848544
#SPJ11
Which of the following conditions were present in over 80% of paddling fatalities from 1995-2000?
Answers
Answer:
80% of the people that were killed weren't wearing a safety flotation device ( in correct terminology Personal Flotation Device, or PFD )
Explanation:
Hence they drowned due to the lack of safety.
The condition present in over 80% of paddling fatalities is that the victims were said to be not wearing a personal flotation device (PFD).
What is paddling in the sea?The act of paddling is known to be a sport or something one can do for fun or for games.
Conclusively, a lot of paddling fatalities 1995-2000 was due to the fact that the people who were engage in the sport or act were not putting on a personal flotation device (PFD) and this can lead to death or drowning.
Learn more about paddling fatalities from
https://brainly.com/question/3787626
Which of the following is the best analogy for the relationship between an equipment operator and the signal person?
The signal person is like the eyes and the equipment operator is like the hands.
The signal person is like the heart and the equipment operator is like the brain.
The signal person is like the arms and the equipment operator is like the legs.
The signal person is like the head and the equipment operator is like the tail.
Answers
Answer:
The signal person is like the eyes and the equipment operator is like the hands.
Explanation:
Hi, can anyone draw me an isometric image of this shape?
Answers
PLEASE HELP I NEED THIS ASP!!
Answers
Answer:
up up down down
Explanation:
left right left right b a select start
Select all the correct answers. What are two reasons why the terrestrial planets formed closer to the sun after a supernova event that initiated the formation of the solar system?
Answers
A transformer connected to a 120-V (rms) ac line is to supply 12.0 V (rms) to a portable electronic device. The load resistance in the secondary is 5.00 Ω
.
(a) What should the ratio of primary to secondary turns of the transformer be?
(b) What rms current must the secondary supply?
(c) What average power is delivered to the load?
(d) What resistance connected directly across the 120-V line would draw the same power as the transformer? Show that this is equal to 5.00 Ω
times the square of the ratio of primary to secondary turns.
Answers
The power delivered to the device is P = (12.0 V)^2/5.00 Ω = 28.8 W.
The power delivered by the transformer to the portable electronic device can be calculated using the formula P = V^2/R, where P is power, V is voltage and R is resistance. Therefore, the power delivered to the device is P = (12.0 V)^2/5.00 Ω = 28.8 W.
To calculate the resistance required to draw the same power from the 120-V line, we use the same formula and solve for resistance, which gives us R = V^2/P = (120 V)^2/28.8 W = 500 Ω.
To show that this resistance is equal to 5.00 Ω times the square of the ratio of primary to secondary turns, we use the transformer equation, Vp/Vs = Np/Ns, where Vp and Vs are the primary and secondary voltages, and Np and Ns are the number of turns in the primary and secondary coils. Rearranging this equation to solve for Ns/Np, we get Ns/Np = Vs/Vp.
Since we know that the voltage ratio is Vs/Vp = 12.0 V/120 V = 0.1, we can substitute this into the equation to get Ns/Np = 0.1. Squaring this ratio gives us (Ns/Np)^2 = 0.01. Multiplying this by the primary resistance, which is (120 V)^2/28.8 W = 500 Ω, gives us (Ns/Np)^2 * 500 Ω = 5.00 Ω, which is the same as the resistance in the secondary. Therefore, we have shown that the resistance required to draw the same power as the transformer is equal to 5.00 Ω times the square of the ratio of primary to secondary turns.
To know more about resistance refer to
https://brainly.com/question/29427458
#SPJ11
Many farms and ranches use electric fences to keep animals from getting into or out of specific pastures. When switched on, an electric current is produced in the fence. When an animal touches the electrified fence, it receives a small shock. What material would be the best choice for making an effective electric fence, and why?
Answers
Answer:
Aluminum
Explanation:
The best material to use when creating an electric fence would be Aluminum. Aluminum wiring is incredibly durable and can be easily obtained. Since aluminum is a non-magnetic metal its conducting capabilities far exceed other metallic options in the market and is also why companies choose aluminum for their high tension cable wiring. Aside from being more expensive than other feasible options its durability and conducting capabilities make it easily the best option.
Answer:
Steel Wires
Explanation:
International house of pancakes