EMC Facilities is important to determine the EMI/EMC level of a particular electronic device in order to ensure that it will be able to operate in its intended environment without having EMC problem. a. An OATS is alternative EMC facilities as compare with TEM and GTEM cell. Discuss the disadvantages of the OATS as compare with Semi-Anechoic Chamber and Reverberation Chamber. (6 marks) b. Absorber is designed specifically for use in Full/Semi-Anechoic chamber. Describe the different type of absorbers.

The 1/7-power-law velocity profile is a better representation of the velocity profile in a turbulent boundary layer than the parabolic laminar boundary-layer velocity profile.

What is velocity?
Velocity is the rate at which an object moves in a certain direction. It is a vector quantity, meaning it has both magnitude (the speed) and direction. Velocity is often expressed as the rate of change of displacement, which is the distance an object travels in a certain direction. Velocity is the change in position over time; the faster an object moves, the greater the velocity. Velocity is important in physics because it is used to calculate the acceleration of an object, the force of gravity, and the momentum of a moving object. It is also used to measure the speed of sound and the speed of light. Velocity is a fundamental concept in physics, and it is used to describe and measure a variety of physical phenomena.

This is because the former has a higher velocity near the wall and a lower velocity near the centerline, which is more representative of the actual velocity profile in a turbulent boundary layer.
The 1/7-power-law velocity profile is represented by the equation u/U = (y/delta)1/7 and the parabolic laminar boundary-layer velocity profile is represented by the equation u/U = (y/delta)2.
When these two equations are plotted on the same graph, with y/delta on the ordinate and u/U on the abscissa, the 1/7-power-law velocity profile is seen to have a higher velocity near the wall and a lower velocity near the centerline, which is more representative of the actual velocity profile in a turbulent boundary layer.

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Answer:

100000

Explanation:

based on the information i have it is up to 70000 but 100000 is closer so choose it

Answer:

Surface Parallelism When a surface is to be parallel to a datum plane, the feature control frame is connected by a leader to the surface, or to an extension line from the surface.

Explanation:

a) The steps that Ms. Shell must take in this regards to solve the puzzle are listed from step 1 to step 11.

b) No, it can't be used to solve the same problem as we will keep getting measurement in multiples of 3.

a) We're told that she has 2 opaque cans. The capacity of each of the opaque cans are 8 liters and 5 liters.

The procedure to measure 1- liter, 2- liters, 3- liters, 4- liters, 6- liters and 7- liters are as follows;

Step 1; Fill the 5 liters opaque barrel with oil painting and also pour it into the 8 liters opaque barrel.

Step 2; Fill the 5 liters opaque barrel right again and also pour it into the 8 liters opaque barrel. This would mean that the 8 liters barrel will be full and we will have 2 liters left in the 5 liters opaque barrel which takes care of the 2 liters measure.

Step 3; Drain the 8 liters opaque barrel and also pour the 2 liters left from the 5 liters tap right into it.

Step 4; With the 5 liters opaque barrel now empty, fill it again and pour it right into the 8 liters tap to make 7 liters inside the 8 liters barrel. This takes care of the 7 liters measure.

Step 5; Now, drain the 5 liters opaque barrel and also refill it. When it gets full pour it into 8 liters that presently has 7 liters until it gets full

Step 6 Since the 8 liters barrel is now full, it means that 4 liters of oil painting are left in the 5 liters opaque barrel. This takes care of the 4 liters measure.

Step 7; Empty the 8 liters opaque barrel and pour the 4 liters left in the 5 liters tap into it.

Step 8; Fill the 5 liters again and pour into the formerly being 4 liters inside the 8 liters opaque barrel to get the 8 liters full and 1 liter remaining in the 5 liters opaque barrel. This takes care of the 1 liter measure.

Step 9; Empty both of the opaque cans, also fill the 8 liters opaque barrel and also pour it right into the 5 liters opaque barrel till it gets full. There would now be 3 liters left in the 8 liters barrel and this takes care of the 3 liters measure.

Step 10; Drain the 5 liters opaque barrel and pour the 3 liters oil painting from 8 liters tap into it.

Step 11; Fill the 8 liters opaque barrel again and pour it into the 5 liters barrel which presently has 3 liters outside. Upon filling the 5 liters tap from the 8 liters barrel, we will get 6 liters oil painting.

b) We're told that you now have 9- liters and 6- liters opaque cans as against 8- liters and 5- liters.

Due to the fact that 9 and 6 share the same multiple of 3, it means that we can not use this to get an odd number of liters and neither can we use it to find the other number of liters because it'll keep us giving us dimension in multiple of 3.

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Aspiring for success in a chosen major such as Mechanical Engineering would require a strong will or zeal to pull through and succeed, which is an ideal psychological prerequisite to success.

Hence, the combination of practical and theoretical knowledge in basic subject coupled with determination should be enough to succeed.

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Answer:

The main reason for bridges collapses is: earthquakes (natural disasters) and construction incidents. Whenever a natural disaster occur, it makes the bridge collapse. An example is hurricanes. Hurricanes come with a great wind and that might lead to the bridge collapsing. Construction incidents means the bridge falls during construction. Those who are employed in health, safety and environmental management need to make sure that during the construction, they have examined the material and made sure it is strong. Working with economists, they should seek better understanding of the methods for minimizing the costs during the life of the bridge. In case for natural disasters, like flooding, they should make the bridge in a lever where the water won't reach the bridge. And they should have a limit for weight in the bridges because that is another reason it collapses, because the bridge does not support extra weight.

Explanation:

hope this helps

Answer:

A) 3 m

Explanation:

The major head loss is calculated by using the expression: \(f \dfrac{L}{D}( \dfrac {U^2}{2g})\)

here:

U = Q/A

Using the continuity equation:

\(U = \dfrac{Q}{\dfrac{\pi}{4}D^2}\)

\(U = \dfrac{5/60 \ m^3/s}{\dfrac{\pi}{4}(0.2)^2}\)

U = 2.65 m/s

Reynolds no = \(\dfrac{\rho U D}{\mu}\)

\(= \dfrac{998 \ kg/m^3 \times 2.65 \ m/s \times 0.2 m}{8.93 \times 10^{-4} \ Pa^-s}\)

= 594,894

Thus, this implies that the flow is turbulent.

Using Moddy's diagram at 5.94 × 10⁻⁵ &;

the relative roughness of 0.01

f = 0.038

Thus, the major head loss = \(f \dfrac{L}{D}( \dfrac {U^2}{2g})\)

\(=0.038 \times (\dfrac{45\ m }{0.2\ m } )\times \dfrac{(2.65 \ m/s) ^2}{2(9.81 \ m/s^2)}\)

= 3.06 m

\(\simeq\) 3 m

As the temperature of the material increases, the potential energy of the molecules increases. Thermal expansion occurs due to changes in temperature, and interatomic distances increase as potential energy increases.

Thermal expansion is used in a variety of applications such as rail buckling, engine coolant, mercury thermometers, joint expansion, and others.

It is to be noted that an application of the concept of liquid expansion in everyday life concerns liquid thermometers. As the heat rises, the mercury or alcohol in the thermometer tube moves in only one direction. As the heat decreases, the liquid moves back smoothly.

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The energy U of the capacitor is given by the formula below:

U = (1/2) ε0 e^2 a d

where ε0 is the permittivity of free space, e is the electric field, a is the area of the plates, and d is the separation between them.

Let us now substitute the given values in the above formula to get the value of energy U.

U = (1/2) ε0 e^2 a d

Therefore, the energy of the parallel-plate capacitor in terms of a, d, e, and appropriate constants is given by the above formula.

The energy U is proportional to the square of the electric field e and to the product of area a and plate separation d.

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The statement, "Space temperature is the only temperature that is important in modern systems." is False.

Modern systems are more complex than older ones. These systems may manage different environments with various requirements and situations. It is critical that you know the varying temperatures that the building and its components need. Temperature sensors have become an essential component of modern climate control systems.

Space temperature is the temperature of the room. It is not the only temperature that is important in modern systems. The following are some of the critical temperature measurements that modern systems monitor:

1. The temperature of outdoor air

2. The temperature of the return air

3. Supply air temperature

4. Temperature of water

5. Temperature of the air being delivered by the rooftop unit

6. Refrigerant temperatures

7. The temperature of the discharge

8. Temperature of the inlet.

A temperature sensor is used to keep track of the temperature in various areas of a building. A building management system (BMS) may use these sensors to help control heating, cooling, and ventilation. These sensors might help to avoid overheating or overcooling areas of the building thus monitoring temperature.

Therefore, while space temperature is significant in certain systems, it is not the only temperature that is important in modern systems. So the given statement "Space temperature is the only temperature that is important in modern systems." is False.

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Cal, the interior designer, will need to use several research methods to restore the interior of the old hotel to its original state.

Firstly, Cal will need to conduct extensive archival research to gather information about the hotel's original interior designer. This will help him understand the original layout, design, and ornamental features of the hotel.
Secondly, Cal will need to find local experts who specialize in the specific restorative work required to source replacements for ornamental features, wood matching, and related tasks. These experts can guide Cal in identifying the right materials, colors, and textures to match the original features of the hotel.
Thirdly, Cal may need to seek out relatives of the original owners to interview them for any information they can provide about the hotel when it was new. This can help him gain insights into the original design, features, and any unique aspects of the hotel.
Finally, Cal will need to do extensive online research to find out anything he can about the hotel's history. This can include searching for old photographs, newspaper articles, and other relevant information about the hotel. By combining all these research methods, Cal can restore the hotel's interior to its original state with the right ornamental features, colors, and textures.

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Small, flat-bottom boats, such as duck hunting boats, are prone to capsizing or tipping over. This is because they have a shallow draft and a flat bottom, which makes them unstable in rough or choppy water. In addition, they are often small and lightweight, which can make them more susceptible to wind and waves.

These boats are also prone to taking on water due to their low freeboard (the distance from the waterline to the deck), which can make them vulnerable to flooding in heavy rain or rough seas. It is important to properly distribute weight and to avoid overloading these boats, as excess weight can also increase the risk of capsizing.

For these reasons, it is important to exercise caution when operating small, flat-bottom boats and to always wear a personal flotation device (PFD) or life jacket while on the water. Additionally, it is recommended to take a boater safety course to learn proper boating techniques and safety procedures.

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Small, flat-bottom boats like duck hunting boats are prone to tipping over or capsizing due to their high center of gravity and lack of stability. The concept of buoyancy and stability plays a key role in understanding why these boats are prone to tipping over.

Small, flat-bottom boats, such as duck hunting boats, are prone to tipping over or capsizing if they encounter rough water or strong waves. This is due to their center of gravity being high and their lack of stability.

To understand why these boats are prone to tipping over, it is important to consider the concept of buoyancy and stability. When a boat is floating on the water, it experiences an upward force called buoyancy that is equal to the weight of the water displaced by the boat. This buoyant force helps to keep the boat afloat.

However, if the boat is not designed with a low center of gravity or with a wider base, it can become unstable and prone to tipping over. This is especially true when the boat encounters turbulent water or when there is a shift in weight distribution, such as when a person stands up or moves around in the boat.

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Answer:

u(y)/U = [(y/H) - ((H²/2μ)(dp/dx)(y/H))] × [(1 - y/H)]

Explanation:

The flow is steady, compressible and planar. Thus the incompressible the continuity equation is given as;

(δu/δx) + (δv/δy) = 0

The velocity(v) in the vertical direction would be zero at both boundaries as well as everywhere in the flow.

This means the continuity equation will dictate that:

∂u

/∂x = 0

It means that u is only just a function of y i.e. u = u(y).

Thus, The Navier-Stokes equation in the y-direction will now be reduced to:

∂p

/∂y = 0

This means the pressure can only then be a function of x.

The Navier-Stokes equation in the x-direction would be;

ρ[(∂u

/∂t) + u(∂u/∂x) + v(∂u/∂y) + w(∂u/∂z)] = -dp/dx + μ(∂²u/∂x²) + v(∂²u/∂y²) + w(∂²u/∂z²)

Recall that v = 0 and u = u(y).

Thus, the Navier-Stokes equation in the x-direction would now become;

∂²u/∂y² = (1/μ)(dp/dx)

We now Integrate twice with respect to y to give;

u(y) = (1/2μ)(dp/dx)y² + c1•y + c2)

At boundary condition of y = 0, C2 will be zero.

Thus;

u(y) = (1/2μ)(dp/dx)y² + c1•y)

At height of y = H, we have;

U = (1/2μ)(dp/dx)H² + c1•H) - - - (eq 1)

Making C1 the subject gives;

c1 = (U/H) - (H/2μ)(dp/dx)

Putting that for c1 in (eq 1) and rearranging to simplify gives us;

u(y)/U = [(y/H) - ((H²/2μ)(dp/dx)(y/H))] × [(1 - y/H)]

The response is (C) >>,. The output operator (>) always comes after the cout object, while the input operator (>) always comes after the cin object.

The iostream header file in the C++ language declares the object of class istream named cin. With the use of the extraction operator (>>) or member functions like getline(), read(), etc. together with the cin object, we may read data from a common input device like a keyboard.

In C++, output is shown on the screen using the cout function. The letters "c" and "out" in "cout" stand for character and output, respectively. cout hence denotes character output. Using the  insertion operator along with cout to output formatted data.

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Answer:

The reason for their unusual properties of the greasy feel and low hardness is that the chemical bonds between the sheets is so weak that very low stresses can allow slip between the sheets.

Explanation:

Talc is a monoclinic mineral with a sheet structure similar to the micas and also has perfect cleavage that follows planes between the weakly bonded sheets.

Now, these sheets are held together only by van der Waals bonds and this allows them to slip past each other easily. Thus, this unique characteristic is responsible for talc's extreme softness, its greasy, soapy feel, and its value as a high-temperature lubricant.

While for graphite, it's carbon atoms are linked in a hexagonal network which forms sheets that are one atom thick. It's sheets are poorly connected and easily cleave or slide over one another when subjected to a small amount of force. Thus, gives graphite its very low hardness, its perfect cleavage, and its slippery feel.

So, we can conclude that the reason for their unusual properties is that the chemical bonds between the sheets is so weak that very low stresses can allow slip between the sheets; hence, the greasy feel and low hardness.

Answer:

a

Explanation:

aaaaaa

Steel is ductile at room temperature, but it may become brittle at low temperatures. Steel, in its pure form, is a crystalline structure that has iron atoms in the center of the cube, surrounded by atoms of carbon or iron.

This lattice structure enables the iron and carbon atoms to move freely, making steel ductile. This ductility is due to the ease with which iron and carbon atoms are allowed to slide past each other when under stress, resulting in the ductile nature of steel. It means steel can be formed or stretched into various shapes without breaking or cracking. In the case of low temperatures, the atoms within the lattice structure are restricted in their movement, limiting the ability of iron and carbon atoms to slide past each other. The brittleness of steel increases as the temperature decreases, limiting its ductility. The yield strength of steel can be influenced by several processes, including work hardening, tempering, and grain growth. Increasing the yield strength increases the brittle-to-ductile transition temperature, resulting in increased brittleness. This leads to an increased risk of failure of steel structures. Decreasing the yield strength of steel reduces the brittle-to-ductile transition temperature, resulting in a higher ductility for steel. It would be better to reduce the yield strength of steel to minimize the brittle-to-ductile transition temperature.

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Motorcycles require a full lane width to operate safely.

Motorcycles, like any other vehicle on the road, need a full lane width to ensure safe operation. Motorcycles have the same rights and responsibilities as other vehicles, and they require sufficient space within a lane to maneuver, maintain stability, and respond to potential hazards.

The full lane width allows motorcycles to position themselves appropriately within the lane, maintain a safe distance from other vehicles, and have enough space for maneuvering to avoid obstacles, potholes, or debris on the road. It also provides enough room for the motorcycle to lean during turns, which is necessary for proper control and stability.

Motorcycles should not be forced to share a lane with another vehicle or be squeezed into a narrower space. It is essential for other motorists to be aware of and respect the space requirements of motorcycles, allowing them to occupy a full lane when necessary for their safety.

By providing motorcycles with the full lane width they require, it helps to enhance their visibility, reduces the risk of collisions, and promotes overall road safety for both motorcyclists and other road users.

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Answer: Neutrals

Explanation: System grounding on a power system is a term used to describe the entire processes involved when a neutral is used as the conductor to connect to the solid earth. This ensures that power is generated. This is usually done using either an inductor, an impendance or a resistor. It is very important and necessary to carry out a proper grounding of a power system in order to ensure the safety of the equipment and the personnel etc

Answer:

letse see

Explanation:

The given incident wave from air (z<0) is Ei = 100cos(π×10^7t−βz)ax (V/m). It is propagating to a non-magnetic media with z>0, conductivity (σ) = 0.05 S/m, and relative permittivity (εr) = 9.

To find the reflection coefficient (Γ) and the standing wave ratio (SWR), we need to first calculate the complex propagation constant (γ) and the intrinsic impedance (η) of the non-magnetic media.

1. Calculate the complex propagation constant (γ):
γ = α + jβ = √(jωμ(σ+jωε)), where ω is the angular frequency, μ is the permeability of the medium, and ε is the permittivity of the medium (ε = εr * ε0).

2. Calculate the intrinsic impedance (η) of the non-magnetic media:
η = √((jωμ)/(σ+jωε))

3. Find the reflection coefficient (Γ):
Γ = (η - η0) / (η + η0), where η0 is the intrinsic impedance of air, which is approximately 377 ohms.

4. Calculate the standing wave ratio (SWR):
SWR = (1 + |Γ|) / (1 - |Γ|)

Using these steps, you can determine the reflection coefficient and the standing wave ratio for the given problem. Remember to use the provided values for conductivity, relative permittivity, and the incident wave's frequency when performing the calculations.

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Answer:

Explanation:

Tech Social Media giant FB is one of those companies. Not long ago the ceo was brought to court to accusations that his company was selling user data. Turns out this is true and they are selling their users private data to companies all over the word. Once the news turned to something else, people focused on something new but the company still continues to sell it's users data the same as before. This is completely unethical as the information belongs to the user and they are not getting anything while the corporation is profiting.

Answer:

the   isentropic efficiency of turbine is 99.65%

Explanation:

Given that:

Mass flow rate of LNG  m = 20 kg/s

The pressure at the inlet \(P_1 =30 \ bar\)  = 3000 kPa

turbine temperature at the inlet \(T_1 = -160^0C\) = ( -160+273)K = 113K

The pressure at the turbine exit \(P_2 = 3 bar\) = 300 kPa

Power produced by the turbine  W = 120 kW

Density of LNG \(\rho = 423.8 \ kg/m^3\)

The formula for the workdone by an ideal turbine can be expressed by:

\(W_{ideal} = \int\limits^2_1 {V} \, dP\)

\(W_{ideal} ={V} \int\limits^2_1 \, dP\)

\(W_{ideal} ={V} [P]^2_{1}\)

\(W_{ideal} ={V} [P_1-P_2]\)

We all know that density = mass * volume i.e \(\rho= m*V\)

Then ;

\(V = \dfrac{m}{\rho}\)

replacing it into the above previous derived formula; we have:

\(W_{ideal} ={ \dfrac{m}{\rho}} [P_1-P_2]\)

\(W_{ideal} ={ \dfrac{20}{423.8}} [3000-300]\)

\(W_{ideal} ={ \dfrac{20}{423.8}} [2700]\)

\(W_{ideal} =0.04719*[2700]\)

\(W_{ideal} =127.42 kW\)

However ; the isentropic efficiency of turbine is given by the relation:

\(n_{isen} =\dfrac{W}{W_{ideal}}\)

\(n_{isen} =\dfrac{120}{120.42}\)

\(n_{isen} =0.9965\)

\(n_{isen} =\) 99.65%

Therefore, the   isentropic efficiency of turbine is 99.65%

Answer:

Do not use I me my we. Less exclamation points, bigger words like "Pompous" Lots of uptight language, as if you are at an interview. structure should be precise and sharp, sharper than Angelina Jolie's cheekbones

Explanation:

The process of data processing by a computer involves several steps that take place in a specific order. The first step is inputting the data into the computer system. This can be done through various devices such as keyboards, scanners, or touchscreens. Once the data is entered into the computer, it is stored in the memory for further processing.

The second step is processing the data. This involves the use of the central processing unit (CPU) which performs mathematical and logical operations on the data. The CPU retrieves the instructions from the memory and executes them, which results in the desired output.

The third step is storing the output data. Once the CPU has processed the data, the result is stored in the memory. The output can be in various forms such as text, images, or sound.

The fourth step is displaying the output. The output is displayed on the screen, printer, or other output devices depending on the nature of the data and the desired format.

Finally, the last step is transmitting the output. If the output is required to be sent to another system or device, it is transmitted using various modes such as email, internet, or other networks.

Overall, these steps are followed in a sequential order to ensure efficient and accurate data processing by the computer. The speed and accuracy of the process depend on the hardware and software components of the computer system, as well as the complexity of the data being processed.

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The basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches

To specify an RC3 fit for the illustrated hole and shaft, we need to determine the minimum allowable diameter of the hole.

First, we need to know the limits of the hole and shaft sizes for an RC3 fit.

According to ANSI B4.1 standard for fits and tolerances, the basic size of the shaft is 1.25 inches and the tolerance class is H11.

The basic size of the hole for an RC3 fit is determined by adding a certain amount of allowance to the basic size of the shaft.

The allowance is calculated based on the fit type, the shaft tolerance class, and the hole tolerance class. For an RC3 fit, the allowance is 0.0015 inches.

Therefore, the basic size of the hole for an RC3 fit is 1.25 + 0.0015 = 1.2515 inches. This is the minimum allowable diameter of the hole for the specified fit.

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When making bends on short lengths of conduit, the shoe may be prevented from creeping by using a vise or clamp to secure the conduit in place.

We have,

When working with short lengths of conduit and making bends, it can be challenging to keep the conduit in place while applying force to create the desired bend.

The shoe, which is typically a bending tool or device, may tend to move or creep along the conduit during the bending process.

To prevent the shoe from creeping, a vise or clamp can be used.

The conduit is securely placed and held in the vise or clamp, which provides stability and prevents movement while the bending force is applied.

This ensures that the bend is made accurately and precisely without the conduit shifting or slipping.

Thus,

When making bends on short lengths of conduit, the shoe may be prevented from creeping by using a vise or clamp to secure the conduit in place.

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