Consider 100 kg of steam initially at 20 bar and 240 degrees C as the system. Â Determine the change in exergy, in kJ, for each of the following processes:
(a) The system is heated at constant pressure until its volume doubles.
(b) The system expands isothermally until its volume doubles.

Answer:

Efficiency is defined as any performance that uses the fewest number of inputs to produce the greatest number of outputs. Simply put, you're efficient if you get more out of less.

Explanation:

Answer:

true

Explanation:

As explained above, if current and voltage are 90° out of phase from each other like in pure inductive circuit, the total power of the circuit would be 0 as follow. This shows that in case of pure inductive circuit, the total power of the circuit would have zero as Cos 90° = 0.

Answer:

Hi, there your answer is hydraulics

Explanation:

Answer:

A: Plane - A flat surface such as a sheet of metal or a machined surface on a part could be used as a plane datum.

B: Line - A straight edge such as a ruler or a machined edge on a part could be used as a line datum.

C: Point - A small pin or a sharply pointed tool could be used as a point datum.

D: Cylinder - A cylindrical surface such as the exterior of a cylinder or a round rod could be used as a cylinder datum.

E: Contoured surface - A surface with a specific shape or contour, such as a curved or angled surface, could be used as a contoured surface datum.

Explanation:

These are just a few examples, and there are many other physical components that could be used to create locating features for each of these datum types. The specific components used may depend on the specific application and the requirements for the part or assembly being measured.

Answer:

it gives pressure this makes it stay where it has to be and lock it

Explanation:

yan llng alam ko

a) False. Root Mean Square Error (RMSE) is not a suitable performance measure for multiclass classification problems as it is primarily used for regression tasks. Multiclass classification typically requires different evaluation metrics such as accuracy, precision, recall, or F1 score.

b) True. Cross-validation is expected to reduce the variance in the estimate of error rate for a classifier. By repeatedly splitting the dataset into training and validation sets, cross-validation provides a more robust estimate of the model's performance by averaging the results across multiple iterations.

a) Root Mean Square Error (RMSE) is commonly used as an evaluation metric in regression tasks where the goal is to predict continuous values. It calculates the average squared difference between the predicted and actual values.

However, in multiclass classification problems, the objective is to assign instances to multiple classes. The RMSE does not directly capture the correctness of class assignments and is not appropriate for evaluating the performance of multiclass classification models. Instead, metrics like accuracy, precision, recall, or F1 score are commonly used.

b) Cross-validation is a technique used to assess the performance of a classifier by repeatedly splitting the data into training and validation sets. By doing so, it provides a more reliable estimate of the model's performance by reducing the variance in the estimate of the error rate.

Cross-validation helps in mitigating the impact of random variations in the training and test sets by averaging the performance across multiple folds. It provides a more robust evaluation of the model's generalization capabilities, making it a valuable tool for assessing and comparing different classifiers.

To learn more about Root Mean Square Error visit:

brainly.com/question/30404398

#SPJ11

Answer:

Around-the-pump proportioner

Explanation:

Answer:

a. 6.48 kW b. 1678.34 kg c. 777.92 W d. 201.42 kg

Explanation:

(a) the rate of heat transfer to the iced water in the tank

The rate of heat transfer to the outer surface of the spherical tank is P = P₁ + P₂ where P₁ = rate of heat transfer to the outer surface by radiation and P₂ = rate of heat transfer to the outer surface by convection through air

P₁ = εσAT⁴ where ε = emissivity of outer surface ε= 1, σ = Stefan-Boltzmann constant = 5.67 × 10⁻⁸ W/m-K⁴, A = area of outer surface of spherical tank = 4πR² where R = outer radius of spherical tank = inner radius + thickness = inner diameter/2 + 5 cm = 2 m/2 + 0.05 m = 1 m + 0.05 m = 1.05 m and T = temperature of surroundings = 20 °C = 273 + 20 = 293 K.

P₁ = εσAT⁴

P₁ = 1 × 5.67 × 10⁻⁸ W/m-K⁴ × 4π(1.05 m)² × (293 K)⁴

P₁ = 1 × 5.67 × 10⁻⁸ W/m-K⁴ × 4π(1.1025 m²) × 7370050801 K⁴

P₁ = 184285909263.7647π × 10⁻⁸ W

P₁ = 578951258703.16 × 10⁻⁸ W

P₁ = 5789.51 W

P₂ = hA(T - T₁) where h = coefficient of thermal convection of air = 2.5 W/m²-K, A = outer surface area of spherical tank = 4πR², T = temperature of surroundings = 20 °C = 273 + 20 = 293 K and T₁ = temperature of outer surface of spherical tank = 0 °C = 273 + 0 = 273 K.  

P₂ = hA(T - T₁)

P₂ = 2.5 W/m²-K × 4π(1.05 m)² × (293 K - 273 K)

P₂ = 2.5 W/m²-K × 4π(1.1025 m²) × 20 K

P₂ = 220.5π W

P₂ = 692.72 W

So, P = P₁ + P₂ = 5789.51 W + 692.72 W = 6482.23 W

Since we are neglecting the thermal resistance of the spherical tank, the rate of heat absorption of the outer surface equals the rate of heat absorption in the inner surface. The rate of heat absorption at the inner surface equals the rate of heat transfer to the iced water.

So, rate of heat transfer to the iced water = P = 6482.23 W = 6.48223 kW 6.48 kW

(b) the amount of ice at 0°C that melts during a 24-h period. The heat of fusion of water is 333.7 kJ/kg.

Since the amount of heat, Q = Pt where P = heat transfer rate to iced water = 6482.23 W and t = time = 24 h = 24 h × 60 min/h × 60 s/min = 86400 s.

Also, Q = the latent heat required to melt the ice at 0 °C = mL where m = mass of ice melted and L = latent heat of fusion of ice = 333.7 kJ/kg

So, Pt = mL

m = Pt/L

= 6482.23 W × 86400 s/333.7 × 10³ J/kg

= 560064672/333.7 × 10³

= 1678.34 kg

(c) the rate of heat transfer to the iced water in the tank for this double-walled tank configuration

Since P is the rate of heat transfer to the outer surface, this is also the rate of heat transfer to the outer 0.5 cm thick wall = P₃ = 6482.23 W

P₃ = kA(T - T₃)/d where k = thermal conductivity of outer wall = 15 W/m²-K

A = surface area of outer wall = 4πR'² where R' = radius of outer wall = radius of inner wall + thickness of inner wall + thickness of vacuum + thickness of outer wall = 2.0 m/2 + 0.5 cm + 1.5 cm + 0.5 cm = 1 m + 2.5 cm = 1 m + 0.025 m = 1.025 m, T = temperature of surroundings = 20 °C = 273 + 20 = 293 K, T₃ = temperature of inner surface of outer wall of spherical tank and d = thickness of outer surface of tank = 0.5 cm = 0.05 m

P₃ = kA(T - T₃)/d

making T₃ subject of the formula, we have

P₃d = kA(T - T₃)

P₃d/kA = (T - T₃)

T₃ = T - P₃d/kA

substituting the values of the variables into the equation, we have

T₃ = 293 K - 6482.23 W × 0.05 m/[15 W/m-K × 4π(1.025 m)²]

T₃ = 293 K - 324.1115 Wm/[15 W/m-K × 4π(1.050625 m²)]

T₃ = 293 K - 324.1115 Wm/[63.0375π W/m-K)]

T₃ = 293 K - 324.1115 Wm/[198.0381 W/m-K)]

T₃ = 293 K - 1.64 K

T₃ = 291.36 K

Since the 1.5 cm thick air space is evacuated, all the heat gets to the inner 0.5 cm thick wall by radiation.

So P = εσAT₃⁴

P₄ = εσAT₃⁴ where ε = emissivity of outer surface ε = 0.15, σ = Stefan-Boltzmann constant = 5.67 × 10⁻⁸ W/m-K⁴, A = area of inner surface of outer wall of spherical tank = 4πR"² where R" = outer radius of inner thick wall of spherical tank = inner radius + thickness of inner wall = inner diameter/2 + 0.5 cm = 2 m/2 + 0.005 m = 1 m + 0.005 m = 1.005 m and T = temperature of outer wall = 291.36 K.

P₄ = 0.15 × 5.67 × 10⁻⁸ W/m-K⁴ × 4π(1.005 m)² × (291.36 K)⁴

P₄ = 0.15 × 5.67 × 10⁻⁸ W/m-K⁴ × 4π(1.010025 m²) × 7206422389.51 K⁴

P₄ = 24762024365.028π × 10⁻⁸ W

P₄ = 77792193833.18 × 10⁻⁸ W

P₄ = 777.92 W

Now P₄ is the heat transfer rate to the inner surface which is at temperature T₄

Since T₄ = 0 °C, P₄ is the rate of heat transfer to the iced water

So, rate of heat transfer to the iced water P₄ = 777.92 W

(d) the amount of ice at 0°C that melts during a 24-h period for this double-walled tank configuration

Since the amount of heat, Q = P₄t where P₄ = heat transfer rate to iced water = 777.92 W and t = time = 24 h = 24 h × 60 min/h × 60 s/min = 86400 s.

Also, Q = the latent heat required to melt the ice at 0 °C = mL where m = mass of ice melted and L = latent heat of fusion of ice = 333.7 kJ/kg

So, P₄t = mL

m = P₄t/L

= 777.92 W × 86400 s/333.7 × 10³ J/kg

= 67212288/333.7 × 10³

= 201.42 kg

If UPS wants to come up with the most efficient way to deliver 5 packages to 5 customers, there are 120 different route combinations for them to consider.

If UPS wants to come up with the most efficient way to deliver 5 packages to 5 customers, there are 120 different route combinations for them to consider. This is because there are 5 possible routes for the first delivery, 4 for the second, 3 for the third, 2 for the fourth, and only 1 for the last. Therefore, the total number of combinations is 5x4x3x2x1=120.

Learn more about here

#SPJ11

If UPS wants to come up with the most efficient way to deliver 5 packages to 5 customers, there are 120 different route combinations for them to consider.

If UPS wants to come up with the most efficient way to deliver 5 packages to 5 customers, there are 120 different route combinations for them to consider. This is because there are 5 possible routes for the first delivery, 4 for the second, 3 for the third, 2 for the fourth, and only 1 for the last. Therefore, the total number of combinations is 5x4x3x2x1=120.

Learn more about here

#SPJ11

The image intensifier tube is a device that is used to amplify and brighten an image. The tube consists of three main components: the input screen, the electrostatic lenses, and the output screen.

The main function of each of the components of an image intensifier tube are as follows:

Input Screen: The input screen is a fluorescent layer that gets excited upon being hit by photons. The screen absorbs the X-ray photons and releases a flash of light that can be transformed into electrons. The output of the input screen is photoelectrons, which is responsible for amplifying the image.

Electrostatic Lenses: The electrostatic lenses are a series of charged conductors that help to focus the electrons in a specific direction. The lenses focus the electrons towards the output screen, which is a phosphor-coated screen. It helps to increase the brightness and magnification of the image. The potential difference of the electrostatic lenses controls the level of magnification of the image.

Output Screen: The output screen is the last component of the image intensifier tube. It consists of a phosphor-coated layer that emits light when it is struck by electrons. The output screen can be viewed on a monitor, which displays the amplified and brightened image.

The input screen is the first component of the image intensifier tube. Its function is to convert the X-ray photons into electrons. The input screen is made up of a layer of cesium iodide (CsI) that is deposited on a glass or metal substrate. Upon being hit by the X-ray photons, the input screen becomes excited and emits light. The light is then converted into electrons by a photoemissive material such as cesium or potassium. The electrons then pass through a series of electrostatic lenses that help to focus the electrons towards the output screen.

The output screen is the last component of the image intensifier tube. Its function is to convert the electrons into visible light. The output screen is coated with a phosphor material such as zinc cadmium sulfide (ZnCdS). The electrons that are focused by the electrostatic lenses strike the phosphor material, which then emits light. The light is then magnified and displayed on a monitor.

The image intensifier tube is a device that is used to amplify and brighten an image. The tube consists of three main components: the input screen, the electrostatic lenses, and the output screen. The input screen converts the X-ray photons into electrons, which are then focused by the electrostatic lenses towards the output screen. The output screen converts the electrons into visible light, which is then magnified and displayed on a monitor.

To know more about electrons visit:

brainly.com/question/12001116

#SPJ11

Let $x ij$ represent the quantity of cars that will be delivered in the following two hours from city I to city j.

Network Diagram:

LP Formulation:

Maximize Z = 150x14 + 150x24

Subject to:

x11 + x12 + x13 + x14 <= 300 (flow from city 1 to other cities)

x21 + x22 + x23 + x24 <= 300 (flow from city 2 to other cities)

x31 + x32 + x33 + x34 <= 300 (flow from city 3 to other cities)

x41 + x42 + x43 + x44 <= 300 (flow from city 4 to other cities)

x11 + x21 + x31 + x41 = 150 (flow into city 1)

x12 + x22 + x32 + x42 = 150 (flow into city 2)

x13 + x23 + x33 + x43 = 150 (flow into city 3)

x14 + x24 + x34 + x44 = 150 (flow into city 4)

xij >= 0 (all variables must be positive)

To learn more about network diagram and the LP formulation refer to:

https://brainly.com/question/29672656

#SPJ4

In fixed facility containers, a pressure relief valve can help release container pressure, thereby preventing catastrophic failures.

Pressure relief valve is a type of safety valve that protects equipment and systems from overpressure. When the set pressure of the valve is reached, it opens, allowing excess pressure to escape and preventing potential damage to the system or equipment. Pressure relief valves are commonly used in industrial applications, including fixed facility containers, to protect against catastrophic failures that can occur when pressure builds up beyond the system's design limits.

In addition to pressure relief valves, other safety features may be incorporated into fixed facility containers, such as pressure gauges, rupture discs, and safety relief valves. These safety features help ensure that the container is operating within safe pressure limits and prevent accidents or damage to the container or surrounding equipment.

You can learn more about pressure relief valve at

https://brainly.com/question/30244723

#SPJ11

Answer:

Strip Gauge

Explanation:

A strip gauge is a short groove that indicates the amount of insulation that must be removed from a wire so the wire can be properly inserted into a switch.

Answer:

A stepped circuit is designed in the engine coolant temperature (ECT) sensor within a powertrain control module (PCM) to increase the sensor's accuracy. A simple non-stepped ECT sensor circuit has a specific resistance which increases or decreases according to the changes in engine coolant temperature.

Explanation:

The volume of cuboid in cubic feet which must be ordered is equal to 5,600 cubic feet.

Given the following data:

Length of helicopter landing pad = 40 ft.

Width of helicopter landing pad = 70 ft.

Height or thickness of helicopter landing pad = 2 ft.

Based on the information provided, we can reasonably infer and logically deduce that the shape of this helicopter landing pad is a cuboid.

Mathematically, the volume of a cuboid can be calculated by using this following formula:

Volume = l × w × h

Where:

Substituting the given parameters into the formula, we have;

Volume = 40 × 70 × 2

Volume = 5,600 cubic feet.

Read more on volume of a cuboid here: https://brainly.com/question/24919497

#SPJ1

Answer:

The thickness of the material is 6.23 cm

Explanation:

Given;

quantity of heat, Q = 6706.8 *10⁶ kcal  

duration of the heat transfer, t = 5 months

thermal conductivity of copper, k = 385 W/mk

outside temperature of the heater, T₁ = 30° C

inside  temperature of the heater, T₂ = 50° C

dimension of the rectangular heater = 450 cm by 384 cm

1 kcal = 1.163000 Watt-hour

6706.8 *10⁶ kcal  = 7800008400 watt-hour

I month = 730 hours

5 months = 3650 hours

Rate of heat transfer, P = \(\frac{7800008400 \ Watt-Hour}{3650 \ Hours} = 2136988.6 \ W\)

Rate of heat transfer, \(P = \frac{K*A *\delta T}{L}\)

where;

P is the rate of heat transfer (W)

k si the thermal conductivity (W/mk)

ΔT is change in temperature (K)

A is area of the heater (m²)

L is thickness of the heater (m)

\(P = \frac{KA(T_2-T_1)}{L} \\\\L = \frac{KA(T_2-T_1)}{P}\\\\L = \frac{385(4.5*3.84)(50-30)}{2136988.6}\\\\L = 0.0623 \ m\)

L = 6.23 cm

Therefore, the thickness of the material is 6.23 cm

X= A+B.C+D

I hope it helps

Answer:

A CC power source will maintain current at a relatively constant level, while a CV power source will maintain voltage at a relatively constant level.

Explanation:

A CC power source will maintain current at a relatively constant level, regardless of fairly large changes in voltage, while a CV power source will maintain voltage at a relatively constant level, regardless of fairly large changes in current.

Answer:

Step One: Know What Your Rocket Needs to Do. ...

Step Two: Establish Mission Parameters. ...

Step Three: Call in Experts. ...

Step Four: Start Drawing. ...

Step Five: Whittle Down the Possibilities. ...

Step Six: Pick the Best Design.

Explanation:

Hope this helps and thx for tha fwee pts

Answer:

Data structures are important as it allows the user to insert, update, arrange, rearrange, delete, and retrieve data in an efficient manner, from the database. And to accomplish the said tasks algorithms are used. It is used to manipulate the stored data within the database in the required manner. …

Explanation:

hope you like my ans

Answer:

just type it on a computer or a laptop

Answer:

True

Explanation:

Because the Electric Magnetic Field is the work done per unit charge where other forms of energy is tranferred to electrical energy

This postfix expression ensures that the correct order of operations is followed, regardless of operator precedence.

The Jack postfix equivalent of the infix expression "d * c / b + a" is:

dcb/ca+

In postfix notation, also known as Reverse Polish Notation (RPN), operators are placed after their operands. The expression is evaluated from left to right, and the order of operations is determined solely by the position of the operators.

The postfix expression "dcb/ca+" can be evaluated as follows:

Multiply d and c: dc*

Divide the result by b: dc*b/

Add the value of a: dcb/ca+

This postfix expression ensures that the correct order of operations is followed, regardless of operator precedence.

Learn more about postfix here

https://brainly.com/question/30881842

#SPJ11

A sinusoidal equation can be used to model the height of the

waterwheel above the water.

Response:

Diameter of the wheel = 40 feet

Point P is a point on an axis parallel to the water surface on the circumference of the wheel.

The time it takes point to reach maximum height = 2 seconds

Location of the center of the water wheel = 15 feet above the center of the water and 15 feet to the right of the mill.

Required:

The model of the distance of the point P from the surface of the water.

Solution:

The distance of the point p above the water surface vary sinusoidally,

according to the following equation;

h = A·sin(ω·t + ∅)) + k

The time it takes the wheel to complete a cycle, T = 4 × 2 s = 8 s

\(T = \mathbf{\dfrac{2 \cdot \pi}{\omega}}\)

Therefore;

\(\omega = \dfrac{2 \cdot \pi}{8} = \dfrac{\pi}{4}\)

A = The amplitude = The radius of the wheel = \(\frac{40 \, ft.}{2}\) = 20 ft.

The vertical shift, k = 15

The horizontal shift is given by the equation;

At t = 0, sin(ω×0 + ∅) = 0

sin(∅) = 0

∅ = 0

The sinusoidal equation that models the distance d is therefore;

Please find attached the drawing of the situation and graph of the

sinusoidal equation.

Learn more about sinusoidal equations here:

https://brainly.com/question/12078395

It can detect 1,024 (2¹⁰) discrete analog levels because the Arduino's ADC is a 10-bit ADC.

The precision of a measurement is based on resolution. The accuracy of the measurement values increases with digitizer resolution. The input amplifier's vertical range is split into 256 discrete levels by a digitizer with an 8-bit ADC. The typical vertical resolution for digital oscilloscopes is 8 bits. However, a 10-bit analog-to-digital converter (ADC) has a resolution that is four times higher than an 8-bit ADC. Signal details are much clearer to see. Calculating the Effective Number of Bits (ENOB) for an Analog-to-Digital Converter (ADC) involves solving for N, substituting the measured Signal-to-Noise Ratio plus Distortion (SINAD) value into the equation describing the Signal-to-Noise Ratio (SNR) for an ideal ADC, and then multiplying the result by the number of bits in the ADC.

Learn more about Analog here:

https://brainly.com/question/13025565

#SPJ4

(a) The required thickness to the nearest millimeter is approximately 196 mm

(b) The maximum permissible internal pressure for a tank wall thickness of 85 mm is approximately 1.68 MPa.

(a) To determine the required thickness to the nearest millimeter, we'll use the formula for the thickness of a pressure vessel:
t = (P * D) / (2 * S)
where:
t = thickness
P = internal pressure = 3.85 MPa
D = diameter = 20 m = 20,000 mm (converting to millimeters)
S = yield stress / factor of safety = 590 MPa / 3.0 = 196.67 MPa (rounded)
Now, we can plug in the values:
t = (3.85 * 20,000) / (2 * 196.67)
t = 77,000 / 393.34
t ≈ 195.66 mm
So, the required thickness to the nearest millimeter is approximately 196 mm.

(b) To find the maximum permissible internal pressure with a tank wall thickness of 85 mm, we'll use the same formula, but rearrange it to solve for P:
P = (2 * S * t) / D
where:
t = 85 mm (given tank wall thickness)
Plugging in the values:
P = (2 * 196.67 * 85) / 20,000
P = 33,534.9 / 20,000
P ≈ 1.68 MPa
Therefore, the maximum permissible internal pressure for a tank wall thickness of 85 mm is approximately 1.68 MPa.

Learn more about " internal pressure" at: https://brainly.com/question/13091911

#SPJ11

Seaport wayfinding has three positive impacts on the community: increased economic activity, improved tourism, and enhanced safety and efficiency.

1. Increased economic activity: Seaport wayfinding helps boost economic activity by facilitating trade and commerce. Efficient wayfinding systems guide cargo vessels and shipping containers to their designated berths, reducing delays and improving turnaround times. This results in faster loading and unloading of goods, which enhances supply chain efficiency. As a result, businesses can save time and money, and productivity increases. According to a study conducted by the American Association of Port Authorities, ports contribute significantly to the national economy, supporting millions of jobs and generating billions of dollars in economic output.

2. Improved tourism: Seaport wayfinding plays a crucial role in attracting tourists and enhancing their experience. Clear signage and navigation systems help visitors easily locate popular attractions, transportation terminals, and recreational areas within the seaport. This enhances the overall tourism experience, encourages longer stays, and boosts local businesses such as hotels, restaurants, and retail establishments. Additionally, efficient wayfinding reduces the likelihood of tourists getting lost or experiencing frustration, leading to positive reviews and word-of-mouth recommendations.

3. Enhanced safety and efficiency: Wayfinding systems in seaports improve safety by providing clear directions and information regarding emergency exits, evacuation routes, and safety protocols. In the event of an emergency, quick and efficient evacuation procedures can save lives. Furthermore, effective wayfinding reduces congestion and improves traffic flow within the port, preventing accidents and reducing delays. This improves overall operational efficiency and ensures that goods and people can move smoothly and safely within the seaport.

Seaport wayfinding has a multitude of positive impacts on the community. It boosts economic activity by streamlining trade and commerce, attracts tourists by improving their experience, and enhances safety and efficiency within the seaport. These benefits contribute to the overall growth and prosperity of the community, creating a positive ripple effect on the local economy and quality of life. Implementing and maintaining effective wayfinding systems in seaports should be a priority to capitalize on these advantages and foster sustainable development.

To know more about Efficiency, visit

https://brainly.com/question/27870797

#SPJ11

It is to be noted that all UHRS platforms are optimized for the popular kinds of internet browser applications.

The Universal Human Relevance System (UHRS) is a crowdsourcing platform that allows for data labeling for a variety of AI application situations.

Vendor partners link people referred to as "judges" to offer data labeling at scale for us. All UHRS judges are bound by an NDA, ensuring that data is kept protected.

A browser is a software tool that allows you to see and interact with all of the knowledgeon the World Wide Web. Web sites, movies, and photos are all examples of this.

Learn more about internet browser applications.:
https://brainly.com/question/16829947
#SPJ1