Explain, with schematic and phasor diagrams, the construction and principle of operation of a split-phase AC induction motor. Indicate the phasor diagram at the instant of starting and discuss the speed-torque characteristics (1) A 1/4 hp 220 V 50 Hz 4-pole capacitor-start motor has the following constants. Main or Running Winding: Zrun = 3.6+ J2.992 Auxiliary or Starting Winding: Zstart=8.5+ 3.90 Find the value of the starting capacitance that will place the main and auxiliary winding currents in quadrature at starting.

The relationship between green building and self-interest include the following:

This is the process of reducing the environmental impact of buildings. This therefore leads to enhancement of the health of people.

Its relationship with self interest can seen listed above as the most appropriate choice.

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Answer:

its c

Explanation:

Sometimes necessary, dependent data marts take data from a data warehouse. Data from a data warehouse and various gathering systems are combined in hybrid data marts.

Businesses may combine the strength of cloud storage with their present on-premise data systems in a hybrid data warehouse, as the name suggests. With a hybrid platform, companies can take advantage of the newest innovations and improve efficiency without having to lose the money they have already invested in their present installations.

There are a few difficulties in creating a hybrid model, such as the absence of a single access point for several heterogeneous databases. The second need is that programmers master several query languages.

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In Iowa courts, the testimony of a licensed engineer or land surveyor, when presented as an expert witness, can be challenged by the opposing attorney.

The opposing attorney has the right to cross-examine the expert witness and challenge their testimony through questioning and presenting counterarguments or conflicting evidence. This is a fundamental aspect of the legal process that allows for the exploration of different perspectives and the evaluation of the credibility and accuracy of expert testimony. By challenging the testimony, the opposing attorney aims to test the expert's qualifications, methods, reasoning, and conclusions to present a comprehensive and well-rounded view to the court. It is through the adversarial process that the court can weigh the evidence and make an informed decision. Therefore, in Iowa courts, the testimony of a licensed engineer or land surveyor, like any other expert witness, can be subject to challenge by the opposing attorney.

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The contribution  margin per unit is the selling price per unit minus the variable cost per unit. In this case , it would be:Contribution margin per unit = Selling price per unit - Variable cost per unit= $10 - $6 = $4

Next, we can calculate the  breakeven  point in units using the following formula:Breakeven point (in units) = Fixed costs / Contribution margin per unitGiven that the fixed costs are $6,000 and the contribution margin per unit is $4, we can calculate the breakeven point: Breakeven point (in units) = $6,000 / $4 = 1,500 unitsTherefore, to earn a profit of $2,400, the number of units that need to be sold would be the breakeven point plus the desired profit: Total units sold = Breakeven point + Desired profit = 1,500 + ($2,400 / $4) = 1,500 + 600 = 2,100 units variable Therefore, 2,100 units would need to be sold to earn a profit of $2,400 with a unit sales price of $10, costs of $6, and fixed costs of $6,000.

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Explanation:

Kirchhoffs Voltage Law or KVL, states that “in any closed loop network, the total voltage around the loop is equal to the sum of all the voltage drops within the same loop” which is also equal to zero. In other words the algebraic sum of all voltages within the loop must be equal to zero.

The false statement about most machine learning models is that: B. they are flexible enough to handle all issues you might see in your dataset (lack of data, incorrect data, etc).

Machine learning (ML) is also referred to as deep learning or artificial intelligence (AI) and it can be defined as a subfield in computer science which is typically focused on the use of data-driven techniques (methods), computer algorithms, and technologies to develop a smart computer-controlled robot with an ability to automatically perform and manage tasks that are exclusively meant for humans or solved by using human intelligence.

Generally speaking, machine learning models are designed and developed to accept numerical data (numbers) or collections of numerical data (numbers) as an input.

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Since the armature is wave wound, the magnetic flux per pole is 0.0274 Weber.

Given the following data:

To find the magnetic flux per pole:

Mathematically, the emf generated by a DC generator is given by the formula;

\(E = \frac{\theta ZN}{60}\) × \(\frac{P}{A}\)

Where:

First of all, we would determine the total number of armature conductors:

\(Z = 144\) × \(2\) × \(3\)

Z = 864

Substituting the given parameters into the formula, we have;

\(520 = \frac{\theta (864)(660)}{60}\) × \(\frac{4}{2}\)

\(520 = \theta (864)(11)\) × \(2\)

\(520 = 19008 \theta \\\\\Theta = \frac{520}{19008}\)

Magnetic flux = 0.0274 Weber.

Therefore, the magnetic flux per pole is 0.0274 Weber.

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Phasor rotation is the order in which waveforms from each phase (A, B, and C) cross zero.

In a three-phase electrical system, the voltage and current waveforms of each phase are offset by a specific angle from each other. This angle is called the phase angle, and it determines the relationship between the waveforms. The phasor rotation is the order in which the voltage or current waveforms from each phase (A, B, and C) cross the zero axis, which is also known as the reference or neutral line.

In a three-phase electrical system, the waveform of each phase completes one full cycle (360 degrees or 2π radians) within a given time period. The phasor rotation refers to the order in which each waveform completes this cycle, starting from the point where it crosses the zero axis.

For example, in a three-phase system, the voltage waveforms for each phase (A, B, and C) may be offset by 120 degrees from each other. This means that each waveform crosses the zero axis at a different time relative to the other waveforms. The phasor rotation refers to the order in which these waveforms cross the zero axis, as they complete one full cycle.

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The acceleration at points A, B and C are respectively; 960 mm²/s, 1600 mm²/s and 600 mm²/s

The drum rolls without sliding and as such its' instantaneous center will lie at B. Thus;

V_d = V_c = 160 mm/s

Also, a_d = a_c = 600 mm²/s

Now, formula for velocity at A is;

V_a = r_ab * ω

where ω = 160/(100 - 60)

ω = 4 rad/s

V_a = 60 * 4

V_a = 240 mm/s

Acceleration at A = V_a²/r_ab

Acceleration at A = 240²/60 = 960 mm²/s

Now, V_b = 100 * 4 = 400 mm/s

Acceleration at B = 400²/100 = 1600 mm²/s

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Answer:

Deburring Tool

Explanation:

A deburring tool is used in order to debur the PVC pipes. They are mostly used for the plastic pipes.

After the PVC pipes are cut, there are burrs on the pipe surface. To remove these burrs, a deburring tool is used. It removes the burrs form the edges of the PVC pipes that results from grinding, cutting, milling, drilling, etc.

The deburring tools are made from high speed steels.

Answer:

I don't know

............................

The output will be an error message since the input() function in Python always takes input as a string, even if the entered value is an integer like 12.

Here,

It cannot directly concatenate a string with an integer.

In order to fix this, we need to convert the input string into an integer using the int() function,

```

x = int(input())

x = x + "abc" # this will give an error message

```If we fix the code, the correct output will be:

`>>> x = int(input())`

`12`

`>>> x + "abc"`

`TypeError: unsupported operand type(s) for +: 'int' and 'str'`

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To design the tensile member for the truss frame, select a material with sufficient strength and durability to withstand the varying load of 0 to 6500 lb.

The tensile member in a truss frame plays a crucial role in withstanding the loads imposed on the structure. In this case, the load varies from 0 to 6500 lb as a traveling crane moves across the frame. To design the tensile member, several considerations need to be taken into account.

Firstly, the material selection is critical. It is important to choose a material with high tensile strength to ensure that it can withstand the maximum load of 6500 lb without experiencing permanent deformation or failure. Common materials used for tensile members include steel alloys, such as carbon steel or stainless steel, which possess excellent tensile properties.

Secondly, the cross-sectional area of the tensile member needs to be determined based on the anticipated load. By calculating the maximum tensile stress experienced by the member using the formula stress = force / area, the required cross-sectional area can be obtained. It is advisable to include a safety factor in the design to account for potential variations in the load or unexpected dynamic effects.

Lastly, the overall design and connection details of the tensile member should be carefully considered. The member should be securely attached to the truss frame to prevent any slippage or displacement under load. Proper fasteners, such as bolts or welds, should be used to ensure a robust and reliable connection.

In summary, the tensile member for the truss frame subjected to a varying load from 0 to 6500 lb should be designed by selecting a material with high tensile strength, determining the appropriate cross-sectional area, and ensuring secure connections. These considerations will help to ensure the structural integrity and safe operation of the truss frame.

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The approximate field diameters of the low power, high power, and oil immersion objectives can be calculated using the diameter of the scanning field.

To calculate the approximate field diameters of the low power, high power, and oil immersion objectives, we can use the concept of parfocality. Parfocality means that when one objective lens is in focus, the other objective lenses should also be nearly in focus.

The field diameter is defined as the diameter of the circular area visible through the microscope. Since the objective lenses are parfocal, the ratio of the field diameters is equal to the ratio of the objective lens magnifications.

Let's assume the diameter of the scanning field is D_scanning. If the magnification of the scanning objective lens is M_scanning, and the magnifications of the low power, high power, and oil immersion objective lenses are M_low, M_high, and M_oil, respectively, then we can calculate the approximate field diameters as follows:

D_low = (M_low / M_scanning) * D_scanning

D_high = (M_high / M_scanning) * D_scanning

D_oil = (M_oil / M_scanning) * D_scanning

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All the following methods have proven to be useful techniques to help project teams identify the risks that might impact the project, except documenting lessons learned.

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Answer:

12 mins

Explanation:

The summation of the forces in vertical direction

= Fb - Fd - w = 0 ∴ Fd = Fb - w  ----- ( 1 )

Fb ( buoyant force ) = Pair * g * Vballoon ------- ( 2 )

Pair = air density , Vballoon = volume of balloon

Vballoon = \(\frac{\pi D^3}{6}\) ,  where D = 4  ∴  Vballoon = 33.51 ft^3

g = 32.2 ft/s^2

From property tables

Pair = 2.33 * 10^-3 slug/ft^3

μ ( dynamic viscosity ) = 3.8 * 10^-7 slug/ft.s

Insert values into equation 2

Fb = ( 2.33 * 10^-3 ) * ( 32.2 ) *( 33.51 )  = 2.514 Ib

∴ Fd = 2.514 - 2.5 = 0.014 Ib ( equation 1 )

Assuming that flow is Laminar  and  RE < 1

Re = (Pair * vd) / μair   -------- ( 3 )

where:  Pair = 2.33 * 10^-3 slug/ft^3 ,  vd = ( 987 * 4 ) ft^2/s ,   μair = 3.8 * 10^-7 slug/ft.s

Insert values into equation 3

Re = 2.4 * 10^7 (  this means that the assumption above is wrong )

Hence we will use drag force law

Assume Cd = 0.5

Express  Fd using the relation below

Fd = 1/2* Cd * Pair * AV^2

therefore V = 1.39 ft/s

Recalculate  Reynold's number using  v = 1.39 ft/s

Re = 34091

from the figure Cd ≈ 0.5 at Re = 34091  

Finally calculate the rise time ( time taken to reach an altitude of 1000 ft )

t = h/v

  = 1000 / 1.39 = 719 seconds ≈ 12 mins

Answer:

To join and reinforce intersecting structural members

Explanation:

The purpose of a gusset or gusset plate used in the construction and repair of aircraft structures is to join and reinforce intersecting structural members

Answer:

technician b?

Explanation:

Reengineering is the process of redesigning and improving business processes to achieve significant performance improvements. It involves challenging traditional methods and leveraging technology for transformative change.

Reengineering is the process of fundamentally redesigning and improving business processes to achieve significant improvements in performance, efficiency, and effectiveness. It involves a holistic approach that rethinks and restructures existing processes, often leveraging technology and innovation to drive transformative change. Reengineering aims to break away from traditional ways of operating and create new, streamlined processes that align with organizational goals and deliver value to customers.

Example: One example of reengineering is the transformation of a traditional paper-based invoicing process into an automated electronic invoicing system. In the traditional process, invoices would be generated manually, printed, and sent through the mail, resulting in delays, errors, and inefficiencies. Through reengineering, the process can be redesigned to leverage electronic invoicing software, where invoices are generated electronically, sent via email or a digital platform, and seamlessly integrated with the organization's accounting systems. This reengineering effort eliminates manual steps, reduces processing time, improves accuracy, and enhances customer satisfaction through faster invoice delivery and streamlined payment processes. The focus is on reimagining the entire invoicing process, identifying pain points, and implementing technological solutions to drive efficiency and effectiveness.

Reengineering projects can vary in scope and scale, but they all involve a critical examination of existing processes, identifying bottlenecks, and finding innovative ways to streamline operations. The goal is to achieve radical improvements in performance and outcomes by challenging traditional assumptions and embracing new approaches to work.

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Answer:

The Dependent Variable is the Effect, Its value depends on changes from the Independent Variable

Hope this Helps

Answer: So you are dealing with maximum and minimum weights and you want to know what MINIMUM number of supporting strands for this block and tackle system are needed I believe. If so you are dealing with economic imbalances Though we are not worrying about money Right? Right we need physics which Physics study matter and how it moves You would need 8 STRANDS

Explanation: Step By Step

Answer:

7.5 feet

Explanation:

45 divided by 6 is 7.5

Answer:

7.5 feet

Explanation:

45 divided by 6 is 7.5

At 1.2mpa pressure and 50c

What is pressure?
By pressing a knife against some fruit, one can see a straightforward illustration of pressure. The surface won't be cut if you press the flat part of the knife against the fruit. The force is dispersed over a wide area (low pressure).

a)Mass flow rate of the refrigerant
Therefore h1= condenser inlet enthalpy =278.28KJ/Kg
saturation temperature at 1.2mpa is 46.29C
Therefore the temperature of the condenser

T2 = 46.29C - 5
T2 = 41.29C

Now,
d)power consumed by compressor W = 3.3KW
Q4 = QL + w = Q4
QL = mR(h1-h2)-W
= 0.0498 x (278.26 - 110.19)-3.3
=5.074KW
Hence refrigerator load is 5.74Kg

(COP)r = 238/53
(Cop) = 4.490

Therefore the above values are the (a) mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.

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The amount of water required to increase the moisture contents of both fine and coarse aggregates to reach absorption 2.418 kg total 0.638kg fine 1.78 kg coarse.

Coarse aggregates are any particles greater than 0.19 inch, but generally range between 3/8 and 1.5 inches in diameter. Gravels constitute the majority of coarse aggregate used in concrete with crushed stone making up most of the remainder.

Coarse aggregates are a construction component made of rock quarried from ground deposits. Examples of these kinds of ground deposits include river gravel, crushed stone from rock quarries, and previously used concrete.

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Answer: ( give brainliest)

Newton's Third Law of Motion states that for every action, there is an equal and opposite reaction. ... A rocket engine produces thrust through action and reaction. The engine produces hot exhaust gases which flow out of the back of the engine. In reaction, a thrusting force is produced in the opposite reaction.

Explanation:

The force that the rocket's engines exert on the exhaust gases is known as the "action force." The rocket experiences an upward thrust as the engines burn fuel and release exhaust gases at high velocity downward.

Thus, The rocket's force on the exhaust gases is referred to as the response force.

The rocket experiences an equal and opposite reaction force in response to the action force, which causes it to be propelled upward into the sky.

For every action, there is an equal and opposite response, states Newton's third rule of motion. The forces involved in a rocket's propulsion during takeoff make this principle clear.

Thus, The force that the rocket's engines exert on the exhaust gases is known as the "action force." The rocket experiences an upward thrust as the engines burn fuel and release exhaust gases at high velocity downward.

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Answer:

c

Explanation:

positive charge and negative charge but cant touch

The tenacity of the fiber is 3.29 gf/den.

Explanation:

To calculate the tenacity of a fiber, we need to know the load at which the fiber ruptures and its linear density. Linear density is usually given in tex, which is the weight in grams of 1,000 meters of fiber.

The formula for tenacity is:

Tenacity = Load / Linear density

To use this formula, we first need to convert the linear density from tex to denier, which is another common unit for linear density. The conversion factor is 1 tex = 9 denier.

So, for a fiber with a linear density of 3.2 tex, we can convert it to denier as follows:

Linear density in denier = 3.2 tex * 9 denier/tex = 28.8 denier

Now we have both the load and the linear density in the appropriate units to calculate the tenacity:

Tenacity = Load / Linear density

Substituting the given values, we get:

Tenacity = 94.8 gf / 28.8 den = 3.29 gf/den

Therefore, the tenacity of the fiber is 3.29 gf/den.

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Answer:

The lake can withdraw a maximum of \(1.464\times 10^{10}\) cubic feet per year to provide water supply for the Triangle area.

Explanation:

The maximum amount of water that can be withdrawn from the lake is represented by the following formula:

\(V = V_{in}+V_{p}-V_{e}-V_{out}\) (Eq. 1)

Where:

\(V\) - Available amount of water for water supply in the Triangle area, measured in cubic feet per year.

\(V_{in}\) - Inflow amount of water, measured in cubic feet per year.

\(V_{out}\) - Amount of water released for the benefit of fish and downstream water users, measured in cubic feet per year.

\(V_{p}\) - Amount of water due to precipitation, measured in cubic feet per year.

\(V_{e}\) - Amount of evaporated water, measured in cubic feet per year.

Then, we can expand this expression as follows:

\(V = f_{in}\cdot \Delta t+h_{p}\cdot A_{l}-h_{e}\cdot A_{l}-f_{out}\cdot \Delta t\)

\(V = (f_{in}-f_{out})\cdot \Delta t +(h_{p}-h_{e})\cdot A_{l}\) (Eq. 2)

Where:

\(f_{in}\) - Average watershed inflow, measured in cubic feet per second.

\(f_{out}\) - Average flow to be released, measured in cubic feet per second.

\(\Delta t\) - Yearly time, measured in seconds per year.

\(h_{p}\) - Change in lake height due to precipitation, measured in feet per year.

\(h_{e}\) - Change in lake height due to evaporation, measured in feet per year.

\(A_{l}\) - Surface area of the lake, measured in square feet.

If we know that \(f_{in} = 900\,\frac{ft^{3}}{s}\), \(f_{out} = 300\,\frac{ft^{3}}{s}\), \(\Delta t = 31,536,000\,\frac{second}{yr}\), \(h_{p} = 32\,\frac{in}{yr}\), \(h_{e} = 55\,\frac{in}{yr}\) and \(A_{l} = 47,000\,acres\), the available amount of water for supply purposes in the Triangle area is:

\(V = \left(900\,\frac{ft^{2}}{s}-300\,\frac{ft^{3}}{s} \right)\cdot \left(31,536,000\,\frac{s}{yr} \right) +\left(32\,\frac{in}{yr}-55\,\frac{in}{yr} \right)\cdot \left(\frac{1}{12}\,\frac{ft}{in}\right)\cdot (47000\,acres)\cdot \left(43560\,\frac{ft^{2}}{acre} \right)\)\(V = 1.464\times 10^{10}\,\frac{ft^{3}}{yr}\)

The lake can withdraw a maximum of \(1.464\times 10^{10}\) cubic feet per year to provide water supply for the Triangle area.