Q3. (a) Calculate the power in driving a 42" x 70" Nordberg Gyratory Crusher if it can accommodate 1,000 mm maximum feed size and produces a product where 80% is smaller than 150 mm and having a 25 mm throw. The design throughput is 1,200 tph of stones and aggregates (dry)

The expected Brinell hardness number for the heat-treated part made from 1040 hot-rolled steel should be approximately 31.01 BHN.

The Brinell hardness number (BHN) is a measure of a material's resistance to indentation. While there is no direct conversion between tensile strength and Brinell hardness, a general correlation can be used to estimate the expected BHN.

Tensile Strength (ksi) = 3.45 × Brinell Hardness Number (BHN)

In order to find the Brinell hardness number, we rearrange the equation:

BHN = Tensile Strength (ksi) / 3.45

Substituting the given tensile strength of 107 kpsi into the equation:

BHN = 107 kpsi / 3.45 ≈ 31.01

Therefore, the expected Brinell hardness number for the heat-treated part made from 1040 hot-rolled steel should be approximately 31.01 BHN.

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Answer:

the equivalent resistance of the circuit decreases and the total current of the circuit increases. 

Explanation:

hope this helps

Answer: b fixed and sliding

Explanation:

The statement "Venturi meters and nozzles work on similar principles of discharge measurement" is True statement.

Venturi meters and nozzles are devices used to measure fluid flow rates based on Bernoulli's equation.

They both use a constriction in the flow path to create a pressure drop, which is then used to calculate the flow rate of the fluid. The difference between them is in the shape of the constriction.

Venturi meters have a gradual constriction that gradually increases in diameter, while nozzles have a sharp constriction that abruptly reduces the diameter of the flow path.

Venturi meters are more suitable for measuring fluids that are more viscous or have a higher flow rate, while nozzles are more suitable for measuring high-velocity fluids.

Therefore the statement is True.

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The area of the gutter is therefore equal to the area of the rectangle plus the area of the triangles.

A = rectangle + 2 * triangle

= 10h + 2 * (1/2 hw)

Using trig work out h and w.

h = 10 sin ?

w = 10 cos ?

A = 10h + hw

= 100sin? + 100sin?cos?

Differentiate the expression (either use the product rule for sin? cos?, or write 100sin?cos? as 50sin2? using the double angle formula)

A = 100sin? + 50sin2?

dA/dt = 100cos? + 100cos2?

For A to be a max or min the derivative must equal zero

100cos? + 100cos2? = 0

cos? + cos2? = 0

Use the double angle formula to write cos2? as 2cos^2 ? - 1

cos? + 2cos^2 ? - 1 = 0

2cos^2 ? + cos? - 1 = 0

This quadratic factorizes:

(2cos? - 1)(cos? + 1) = 0

This means that

cos ? = 1/2 or cos ? = 1

giving:

? = pi/3 or ? = pi

Which means that to achieve the maximum area ? should be pi/3 = 60 degrees

You can check that this is the max by substituting in these values of theta and the two end points (theta = 0, theta = pi), and seeing that pi/3 gives the maximum.

The maximum area is therefore

A = 100sin? + 100sin?cos?

= 100sin(pi/3) + 100sin(pi/3)cos(pi/3)

= 100 sqrt(3) / 2 + 100 sqrt(3)/2 * 1/2

= 100 * 3/2 * sqrt(3) / 2

= 3 * 25 * sqrt(3)

= 75 sqrt(3)

= 129.9...

= 130 cm^3

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Answer:

4

Explanation:

When the process is in control but does not meet specification, it is referred to as a special cause error.

In statistical process control, a process is considered to be in control when it operates within the defined limits and shows only random variations. However, when a process is in control but does not meet the desired specifications, it indicates the presence of a special cause error.

Special cause errors are attributed to specific factors or events that cause the process to deviate from the expected outcome. These errors are typically unpredictable and require investigation and corrective action to bring the process back within the desired specifications.

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Explanation:

Most ceilings are coverd with plaster or board.

ShopKey Pro presents repair information in a customized email template as well as auto repair software format or layout.

In regards to auto repair information tools, the solution that is known to be made available is the use of ShopKey® Pro with 1Search.

This is know  to be a kind of an exclusive auto repair software that helps to streamlines the search acts to bring closer a special  combination of OEM data as well as experience-based Real Fixes.

Therefore, based on the above, one can say that ShopKey Pro presents repair information in a customized email template as well as auto repair software format or layout.

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Disc pad rivets come into contact with a rotor. This contact generates heat that causes the backing plate to expand. This expansion results in the backing plate pushing the disc pad away from the rotor.

That's why you'll hear a clunk or click when you release the brake pedal. What is the distance at which the disc pad rivets can contact a rotor The answer is option OD, which is 1/64th inch.In a brake system, disc pad rivets should not contact the rotor. If they do, they will wear the rotor prematurely and make a scraping sound. If the brake pads are worn too thin, they will grind against the rotors, causing damage to the rotors and making noise.

thickness of the brake pads and the amount of rotor material remaining are the two most critical measurements in determining if the rotors need to be resurfaced or replaced. If the rotors are worn, they may require replacement, which will be expensive. If the rotors have deep grooves, scoring, or are cracked, they must be replaced.

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Telnet, TFTP, SNMP, and SMTP all operate at the Application Layer of the OSI (Open Systems Interconnection) model.

Application Layer is the seventh layer of the Open Systems Interconnection (OSI) model, which is a standard reference model used to describe how data is transmitted between two hosts on a network. It is responsible for enabling user-friendly applications such as email and web browsers to interact with the network, as well as providing services such as data transfer, remote login, and file transfer. The Application Layer consists of protocols that provide the interface between the user applications and the underlying network.

This layer is the topmost layer of the model and is responsible for providing the interface between applications and the network. It is responsible for providing the services that allow users to access the network and exchange data.

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The most common applications for micro piles are structural foundation support, underpinning, wall support, and slope stabilization.

The master format is a common outline for organizing information about building materials and components. Its primary divisions include topics such as sitework, concrete, masonry, metals, wood, and plastics, among others.) Seismic retrofitting or strengthening is done to improve the structural capacities (strength, stiffness, ductility, stability, and integrity) of the structure so that the building's performance level can be raised to withstand the design earthquake consideration.

The mass concrete underpinning method is the traditional underpinning method that has been used for centuries. The method entails extending the old foundation to a stable stratum. The soil beneath the existing foundation is excavated in stages orpins in a controlled manner.

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Part A:The total energy required to maintain the house at 20 ∘C for 8 hours is:E = Pt = 15 kW × 8 hours = 120 kWhThe cost of this energy at 17 cents/kWh is:Cost = 120 kWh × $0.17/kWh = $20.40
Therefore, the heating cost for the night is $20.40.Part B:
If resistance heating were used instead of a reversible heat pump, the heating would be less efficient. The total energy required would be the same as in Part A, but the heating system would convert all of the electricity into heat, while a heat pump can provide more heat energy than the electrical energy it consumes.

The cost of this energy at 17 cents/kWh is:Cost = 120 kWh × $0.17/kWh = $20.40
Therefore, the heating cost for the night using resistance heating would also be $20.40.
Part A:
To determine the heating cost for the night using a reversible heat pump, we first need to calculate the coefficient of performance (COP) of the heat pump. The COP can be found using the following formula:
COP = T_hot / (T_hot - T_cold)
Where T_hot is the inside temperature (20°C) and T_cold is the outside temperature (0°C). We need to convert these temperatures to Kelvin by adding 273.15 to each:
T_hot (K) = 20 + 273.15 = 293.15 K
T_cold (K) = 0 + 273.15 = 273.15 K
Now we can find the COP:
COP = 293.15 / (293.15 - 273.15) = 293.15 / 20 = 14.66
The heat pump is 14.66 times more efficient than an ideal electrical heater. Since the house is losing heat at a rate of 15 kW, the power input required for the heat pump is:
Power_input = Power_output / COP = 15 kW / 14.66 = 1.023 kW
The heating cost for the night (8 hours) can now be calculated:
Cost = Power_input * Hours * Price_per_kWh = 1.023 kW * 8 h * $0.17/kWh = $1.395
Rounded to three significant figures, the cost is $1.40.

Part B:If resistance heating were used instead, the power input would be equal to the power output (15 kW). The heating cost for the night can be calculated:
Cost = Power_output * Hours * Price_per_kWh = 15 kW * 8 h * $0.17/kWh = $20.4
Rounded to two significant figures, the cost is $20.

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Huffman encoding's longest codeword is n-1 bits long. For instance, f i = 2(i-1)/2n.

The length of the longest codeword is n 1. This number is obtained by encoding n symbols, where n 2 of them have probabilities of 1/2,1/4,...,1/2n-2, and two of them have probabilities of 1/2n-1. Never can a codeword be longer than length n 1.

The longest code, or the maximum depth, is 255.ac if by "all bytes" you mean the 256 potential byte values that can be used as symbols.

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They use an inklike plastic that goes through a fine needle or dispenser that make the shape you want with a cierten code by the computer.this is a simple way of saying it.

A true statement about the seal between the respirator and the wearer's face is: D. facial hair can prevent a respirator from properly sealing to the wearer’s face.

A respirator can be defined as a personal protective equipment that is typically worn over the face to protect the mouth and nose, while protecting the wearer from inhaling smoke, dust, or other toxic chemical substances.

In this context, a true statement about the seal between the respirator and the wearer's face is that facial hair has the ability to prevent a respirator from properly sealing to the wearer’s face.

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water condition for a boiler is crucial to its performance and longevity. Proper water treatment and maintenance are essential to ensure that the boiler operates efficiently and safely. Regular monitoring of water quality, pH levels, TDS, oxygen content, and temperature is necessary to maintain optimal conditions for the boiler.

The water condition for a boiler is an essential factor to consider as it affects the efficiency, safety, and lifespan of the boiler. The following are some key factors to keep in mind when considering the water condition for a boiler:
1. Water Quality: The quality of the water used in a boiler is critical to its performance. Poor quality water can lead to scale buildup, corrosion, and even boiler failure. Therefore, the water used in a boiler must meet certain standards. This can be achieved by using treated water, such as deionized or demineralized water, or by using a water treatment system that removes impurities.
2. pH Levels: The pH level of the water in a boiler is crucial as it affects the corrosion rate of the metal. Ideally, the pH should be between 8.5 and 9.5 for steel boilers and between 7 and 9 for copper-based boilers. A pH level that is too low can cause corrosion, while a pH level that is too high can cause scale buildup.
3. Total Dissolved Solids (TDS): TDS refers to the amount of dissolved minerals in the water. High TDS levels can cause scale buildup and reduce the efficiency of the boiler. Therefore, it is essential to monitor TDS levels regularly and remove excess minerals using a blowdown system.
4. Oxygen Content: Oxygen in the water can cause corrosion and damage to the boiler. Therefore, it is essential to remove excess oxygen using a deaerator or other oxygen removal system.
5. Temperature: The temperature of the water in a boiler should be maintained at the appropriate level to prevent overheating and damage to the boiler. The temperature should be monitored regularly and adjusted as necessary.
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Unfortunately, when using turtle graphics, there is no built-in way to store and call on functions. This means that each time you want to use a particular set of commands, you have to rewrite them in your code.

However, there are some workarounds that you can use to achieve similar functionality. One option is to define a list of commands as a variable, and then iterate through that list using a for loop. Another option is to define a custom function that takes in parameters and then executes a set of turtle commands based on those parameters.

While these solutions may not be as elegant as having built-in function storage and calling, they can still be effective for simplifying your code and reducing repetition. Overall, it's important to be creative and resourceful when working with turtle graphics, and to explore different approaches until you find one that works best for your specific needs.

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If the Power train Control Module (PCM) of a vehicle richens up the fuel mixture due to improper air injection in the exhaust manifold, several consequences may occur. Firstly, the engine's efficiency will decrease, as it requires a precise air-fuel ratio for optimal combustion.

This could lead to reduced fuel economy, resulting in higher fuel consumption and costs.
1)Secondly, excessive fuel in the combustion chamber may cause misfires or incomplete combustion, potentially leading to reduced engine performance and power output. This can manifest as rough idling, hesitation, or stalling during acceleration.
2)Furthermore, the enriched fuel mixture may increase emissions due to unburden fuel particles in the exhaust gases. This can harm the environment, contribute to air pollution, and possibly cause the vehicle to fail an emissions test.
3)Additionally, the excess fuel can contaminate and degrade the engine oil, leading to increased engine wear and reduced service life. It may also damage critical engine components, such as the oxygen sensors and catalytic converter, resulting in expensive repairs.
4)In conclusion, if the PCM riches the fuel mixture due to improper air injection in the exhaust manifold, it can lead to reduced engine efficiency, performance issues, increased emissions, and potential damage to engine components. It is crucial to address this issue promptly to maintain your vehicle's performance and prevent costly repairs.

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Answer:

  0.42 kg

Explanation:

Heat is proportional to mass by way of the conversion factor that is the inverse of the specific heat.

  \(\dfrac{63000\text{ J}}{\dfrac{3000\text{ J}}{\text{kg$\cdot$K}}\cdot(65-15)\text{ K}}=0.42\text{ kg}\)

The mass of the liquid is about 0.42 kg.

Answer:

The answer is "\(1802.1978 \ \frac{w}{m^2}\)"

Explanation:

The Solar radiation  reaches the earth surfaces is given by

\(I=Isc(1+0.033 \cos \frac{360.(n)}{365.25})\)

where n is number of days in years

n for 6 September 2021:

\(\to n= 31+28+31+30+31+30+31+31+6\\\\\to n= 249\)

\(\to I=Isc(1+0.033 \cos \frac{360 \alpha 249}{365.25})\\\\\to I=1800(1+0.033(+0.037))\\\\\to I =1800(1.001221)\\\\\to I=1802.1978 \ \frac{w}{m^2}\)

In this section, we introduce the idea of the Laplace transform and talk about some of its characteristics.

The Laplace transform is described in the manner that follows. For t 0, let's define f(t). The following equation defines the Laplace transform of f, which is represented by the symbols L[f(t)] or F(s).

lim = L[f(t)] = F(s)

, an an an a an an a a a an a a an an an an an an an an a the

The integral used to define a Laplace transform is erroneous. The integrand determines whether an improper integral will converge or diverge.

When the improper integral converges, the function f(t) is said to have a Laplace transform. What categories of functions thus ensure a convergent improper integral—that is, what categories of functions have Laplace transforms.

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Answer:

The Negative battery cable is used to bolt the vehicle frame to allow the metal structure of the vehicle to serve as a large conductor to carry current.

Explanation:

Battery cable is large automotive cable. Like smaller types of automotive wire, it is available in PVC and cross-linked forms. Click here to read an earlier post explaining the differences between PVC and cross-linked wire insulation.

One type of PVC battery cable is SGT cable. It is rated to 80°C and therefore can be used in starters or battery grounds.  Cross-linked battery cables can also be used in starter and battery ground applications, and they are more resistant to heat, abrasion, and aging than PVC cable.

Two types of cross-linked battery cable are SGX and STX. They are rated to 125°C. Of the three types of battery cable (SGT, SGX, amd STX), STX has the thinnest wall, making it a popular choice for automotive applications with limited space.

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The addictive properties of benzodiazepine drugs have been linked to their effects at the alpha 1 subunit of GABAA receptors. Benzodiazepines are a class of drugs that act as central nervous system depressants and are commonly prescribed for treating anxiety, insomnia, seizures, and muscle spasms.

They exert their therapeutic effects by enhancing the inhibitory neurotransmission of gamma-aminobutyric acid (GABA), the primary inhibitory neurotransmitter in the brain.

GABAA receptors are composed of different subunits, including alpha, beta, and gamma. Benzodiazepines bind to a specific site on the GABAA receptor complex, which is distinct from the GABA binding site. This interaction potentiates the effects of GABA, resulting in increased inhibitory neurotransmission.

The alpha 1 subunit of GABAA receptors has been implicated in the addictive properties of benzodiazepines. Studies have shown that benzodiazepines with a higher affinity for the alpha 1 subunit are more likely to produce dependence and addiction. Additionally, research using genetically modified mice has demonstrated that the absence of the alpha 1 subunit reduces the reinforcing effects of benzodiazepines, suggesting a key role for this subunit in addiction.

In summary, the addictive properties of benzodiazepines are associated with their effects at the alpha 1 subunit of GABAA receptors. Understanding the specific receptor subunits involved in addiction can help inform the development of new treatments for substance use disorders.

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Dr. Brooks should invest in solar panels due to positive returns at a 20% required rate of return, resulting in an annual savings of $542.42. However, a recalculation of the NPV at a 9% discount rate is necessary to assess the investment's continued viability.

First, we calculate the expected annual savings by dividing the initial cost ($6,571) by the payback period (12.11 years), resulting in approximately $542.42 per year.

Next, using the methodology discussed in class, we compare the expected annual savings to the required rate of return of 20%. If the expected annual savings are greater than or equal to the required rate of return, the investment is considered profitable. In this case, $542.42 is less than 20%, so the investment does not meet the required rate of return.

If we change the appropriate discount rate to 9%, we repeat the same comparison. The expected annual savings of $542.42 is still less than 9%, indicating that the investment remains unprofitable even with the lower discount rate.

Based on these calculations, Dr. Brooks should not invest in solar panels under the given conditions, regardless of the discount rate.

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The maximum bending stress of the simply supported circular beam is [insert value] MPa.

To find the maximum bending stress in the circular beam, we can use the bending moment formula and the moment of inertia of a circular cross-section. The formula for bending moment in a simply supported beam with a concentrated central load is:

Bending Moment (M) = (Load x Length) / 4

In this case, the load is 8 kN and the length is 5 m. Thus, the bending moment can be calculated as (8 kN x 5 m) / 4 = 10 kNm.

The moment of inertia (I) of a circular cross-section is given by the formula:

Moment of Inertia (I) = (π/64) x (D^4)

Where D is the diameter of the circular beam. In this case, the diameter is 80 mm, which is equal to 0.08 m. Thus, the moment of inertia can be calculated as (π/64) x (0.08^4) = 4.914 x 10^-6 m^4.

Finally, the maximum bending stress (σ) can be calculated using the formula:

Maximum Bending Stress (σ) = (M x y) / I

Where y is the distance from the neutral axis to the outermost fiber of the circular beam. For a simply supported beam, y is equal to half the radius, which is half the diameter divided by 2. In this case, y = (0.08/2)/2 = 0.02 m.

By substituting the values into the formula, we can calculate the maximum bending stress.

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Explanation:

Also known as sustainable design, this approach integrates the building life-cycle with each green practice employed with a design-purpose to create a synergy among the practices used. ... The essence of green building is an optimization of one or more of these principles.

The answer is analyze

Answer:

A. portable

Explanation:

A transistor radio is a small portable radio receiver that uses transistor-based circuitry. Following the invention of the transistor in 1947—which revolutionized the field of consumer electronics by introducing small but powerful, convenient hand-held devices—the Regency TR-1 was released in 1954 becoming the first commercial transistor radio.