When it comes to casting processes, the speed at which the metal is poured into the mold can have both advantages and disadvantages.
Advantages of pouring the metal at a high rate include:
1. Better fill of the mold: The faster the metal is poured, the more likely it is to fill the mold completely before it solidifies. This can result in a smoother finish and fewer defects in the final product.
2. Higher productivity: Casting at a high rate allows for more parts to be produced in a shorter amount of time, increasing overall productivity.
3. Lower cost: Faster casting can lead to lower labor costs since less time is required to produce each part.
However, there are also potential disadvantages to pouring the metal at a high rate, including:
1. Porosity: Pouring the metal too quickly can lead to porosity, which is the formation of small air pockets or bubbles within the metal. This can weaken the final product and make it more prone to failure.
2. Shrinkage: When metal cools and solidifies, it can shrink slightly. If the metal is poured too quickly, it may not have time to fully fill the mold before it starts to solidify. This can result in incomplete parts or parts with irregular shapes.
3. Increased wear and tear: Casting at a high rate can cause increased wear and tear on the equipment and molds, which can lead to more frequent maintenance and repairs.
In summary, pouring metal at a high rate can have both advantages and disadvantages. It's important to carefully consider the specific casting process and product requirements before deciding on the optimal pouring rate.
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Grain boundaries within crystalline materials tend to ___________ the mobility of dislocations, which is why a material with larger grains is typically ___________ than a material with smaller grains and thus more boundaries between grains. (Reduce or increase? Stronger or weaker?)
Grain boundaries within crystalline materials tend to reduce the mobility of dislocations, which is why a material with larger grains is typically stronger than a material with smaller grains ,
thus more boundaries between grains. Grain boundaries are the interfaces or boundaries between individual grains or crystallites in a polycrystalline material. Dislocations are line defects in the crystal lattice structure that contribute to the plastic deformation and mechanical properties of materials. When dislocations encounter grain boundaries, they can be impeded in their motion, leading to reduced mobility of dislocations. In materials with larger grains, there are fewer grain boundaries per unit volume, and dislocations have longer distances to travel before encountering grain boundaries.
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25. The Fire Alarm Panel's Reset Switch should only be activated ____
The Fire Alarm Panel's Reset Switch should only be activated in night.
Thus, When there is a fire, the purpose of a fire alarm control panel is to quickly initiate an emergency response so everyone inside the building has a chance to escape safely.
The capabilities of this device can vary because different fire panels on the market have distinct features. A simple fire panel, for instance, could blast an alarm to warn everyone of the threat.
To try to quickly put out the fire, some fire panels also call the fire service and some even turn on the sprinkler system in the building. Depending on the fire panel you choose to buy, the capabilities will vary.
You could need a fire panel if you're responsible for making sure a building has all the safety-related elements it needs.
Thus, The Fire Alarm Panel's Reset Switch should only be activated in night.
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What mathematical formalism underlies functional programming?
Functional programming is built on mathematical concepts such as lambda calculus and category theory. Lambda calculus is a formal system that describes functions and their application. Category theory is a branch of mathematics that studies the structure of mathematical objects and the relationships between them. Functional programming uses these concepts to define functions as mathematical objects and manipulate them through operations such as composition and recursion. This mathematical formalism provides a foundation for the development of functional programming languages and the creation of programs that are concise, modular, and easy to reason about.
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When determining action during emergencies, Fire Wardens must consider all of the following EXCEPT:
A. evacuating floor for an alarm
B. waiting for instructions
C. avoiding attack stairs
D. Using smoke-free stairs
The option that is not relevant in this scenario is: B. Waiting for instructions, when determining action during emergencies.
Fire Wardens are trained to take immediate action to evacuate occupants in the event of an emergency, and waiting for instructions may cause a delay in the response and potentially endanger occupants.
Instead, Fire Wardens should take initiative and follow the Emergency Action Plan to evacuate occupants safely and quickly. However, Fire Wardens should also maintain communication with the Fire Safety Director and other designated personnel to provide updates and receive additional instructions as needed.
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Data analysis provides you with the ability to be _____, which is important to advance cloud security.reactive and resilientactive and elasticredundant and secureproactive and predictive
The term that best fits the blank in the question is "proactive and predictive".
Data analysis enables organizations to be proactive in identifying potential security threats before they occur, as well as predictive in anticipating potential issues before they can do damage to the cloud environment. This is important for advancing cloud security, as it allows for quick action to be taken to prevent security breaches and other issues.
By being proactive and predictive, organizations can stay ahead of the curve and ensure that their cloud security is as robust and secure as possible. It can be said that data analysis is essential for advancing cloud security as it helps organizations to be proactive and predictive in identifying and addressing potential security threats. This enables them to stay ahead of the curve and ensure that their cloud environments remain secure and resilient.
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What steps do you need to install a Corei3 CPU into a FM2 motherboard?
Unfortunately, you cannot install a Core i3 CPU on an FM2 motherboard, as they are not compatible. The Core i3 CPU is an Intel processor, while the FM2 motherboard socket is designed for AMD processors.
If you want to install a compatible processor on an FM2 motherboard, look for AMD A-series or Athlon-series processors. On the other hand, if you want to use a Core i3 CPU, look for a motherboard with an Intel-compatible socket such as LGA 1151 or LGA 1200, depending on the specific Core i3 model you have.
It is not possible to install a Core i3 CPU on an FM2 motherboard, as they are not compatible. If you are looking to upgrade your CPU, you will need to choose a compatible CPU and motherboard that use the same socket.
If you are installing an AMD CPU into an FM2 motherboard, the steps to install it are as follows:
First, make sure that the motherboard and CPU are compatible. Check the motherboard manual or manufacturer's website to confirm that the CPU is supported.
Turn off your computer and unplug it from the power source.
Locate the CPU socket on the motherboard. It will be a square or rectangular area with small holes for the CPU pins.
Open the CPU socket by lifting the retention arm or lever.
Align the notches or markings on the CPU with those on the socket. Be sure to match the orientation of the CPU with the markings on the socket.
Gently place the CPU into the socket, making sure that the pins on the CPU are aligned with the holes on the socket.
Lower the retention arm or lever to secure the CPU in place.
Apply thermal paste to the top of the CPU. This helps to transfer heat from the CPU to the heatsink.
Attach the heatsink/fan to the CPU socket. Follow the instructions in the motherboard manual for attaching the heatsink/fan.
Connect the CPU fan cable to the CPU fan header on the motherboard.
Close your computer case and plug it back in.
Turn on your computer and enter the BIOS to configure the CPU settings. Follow the instructions in the motherboard manual for accessing and configuring the BIOS.
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When looping collections, what is it important to remember?
When looping collections, it is important to remember to use the correct loop syntax for the type of collection being used (such as for...of loops for arrays and for...in loops for objects).
It is also important to consider the order and number of iterations needed to properly access and manipulate the data within the collection. Additionally, it is important to avoid modifying the collection during the loop as this can cause unexpected behavior and errors. When looping collections, it is important to remember these key concepts:
1. Iteration: Iterate through each item in the collection, ensuring you cover all elements.
2. Index: Keep track of the index or key, especially when working with arrays or dictionaries.
3. Condition: Use appropriate conditions to handle specific requirements or avoid infinite loops.
4. Performance: Be mindful of the performance and choose the optimal looping technique for your collection type.
By considering these aspects, you can ensure effective and efficient looping through collections.
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Does the emergency blow down release gear uplocks
In a normal pressure vessel or pipeline, the emergency blowdown system is intended to quickly depressurize the system in the case of an emergency, like a fire or vessel breach. The blowdown system often entails the opening of valves that enable the vessel's contents to be quickly expelled to a secure area, like a flare stack or an enclosed vessel.
The release gear's uplocks have no bearing on how the emergency collapse system functions. The uplocks are often a mechanical device used to lock the release gear and stop it from mistakenly opening while it is functioning normally.
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What alt are crew masks approved for
Crew masks are approved for use in high-altitude environments.
Crew masks are designed to provide breathable air to pilots and crew members in high altitude environments, such as during flights at cruising altitude. These masks are typically equipped with oxygen tanks or oxygen generators to ensure that crew members have a continuous supply of oxygen, which is necessary at high altitudes where the air pressure and oxygen levels are lower.
Crew masks are regulated by aviation authorities such as the Federal Aviation Administration (FAA) and are subject to rigorous testing and certification processes to ensure their safety and effectiveness. The specific altitude range for which crew masks are approved may vary depending on the type of mask and its intended use. However, in general, crew masks are designed to operate at altitudes up to 40,000 feet above sea level.
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04-011 - SQL. When listing multiple elements, which requires a comma, SELECT or WHERE?
When listing multiple elements that require a comma in SQL, you use the SELECT statement. In the SELECT statement, you can list multiple elements (columns) separated by commas to retrieve specific data from a table. The WHERE clause is used to filter results based on certain conditions, and it does not require commas to separate elements.
Here's an example of using the SELECT statement with multiple elements:
```
SELECT column1, column2, column3
FROM tableName
WHERE condition;
```
In this example, "column1," "column2," and "column3" are multiple elements separated by commas in the SELECT statement.
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Pressing a fire switch light does what
2. If an existing office building is fully sprinklered, what is the maximum size of the office area?
The maximum size of an office area in a fully sprinklered existing office building, we need to consider the relevant building code or fire safety regulations for your specific location. These regulations can vary depending on the country, state, or municipality.
In general, having a fully sprinklered office building can allow for a larger office area as it provides better fire protection. However, to provide an accurate answer, please refer to your local building code or consult with a building professional to determine the maximum allowable office area for a fully sprinklered building in your area.
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What must be true for technology to be usable?
For technology to be usable, it must be accessible, user-friendly, functional, and reliable. This ensures that users can easily interact with the technology and achieve their desired outcomes while experiencing minimal issues or difficulties.
For technology to be usable, it must meet the needs and expectations of the user, be accessible and easy to use, and perform its intended functions reliably and efficiently. Additionally, the technology must be compatible with the user's devices and operating systems, be secure and protect user data, and be regularly updated and maintained. User training and support may also be necessary for the technology to be effectively used. Ultimately, the technology should enhance productivity, improve communication and collaboration, and provide a positive user experience.
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The number of vacancies in a material _____________ as temperature increases. (increases or decreases)
The number of vacancies in a material generally increases as the temperature increases. This phenomenon can be explained by the increase in energy levels of the atoms in the material at higher temperatures. When the temperature increases, the atoms in the material gain kinetic energy, causing them to vibrate more vigorously.
This increased motion makes it easier for atoms to move around, which can create vacancies in the lattice structure of the material.Vacancies are defects in a material's crystal structure where an atom is missing from its regular lattice site. As the temperature rises, the atoms in the lattice structure of the material become more mobile and can more easily move out of their lattice positions, which creates more vacancies. This increase in vacancies can have several effects on the material's properties, such as reducing its strength and altering its conductivity.In some cases, the increase in vacancies can also cause the material to undergo phase transitions. For example, as a metal heats up, its atoms become more mobile, leading to a phase transition from a crystalline structure to a liquid state.In summary, the number of vacancies in a material increases as the temperature increases due to the increased mobility of atoms, which can lead to changes in the material's properties and even phase transitions.For such more question on vigorously
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True or false? A maliciously designed USB battery charger could be used to exploit a mobile device on connection.
True
A maliciously designed USB battery charger could be used to exploit a mobile device on connection. When you connect your mobile device to a compromised USB charger, it may introduce malware or execute unauthorized commands, compromising the security and data of your device. It is important to use trusted and secure USB chargers to protect your mobile device from such threats.
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All of the following will recall designated elevator cars EXCEPT:
A. #1620 key at the selected elevator bank
B. Manual station on all floors
C. Any elevator lobby smoke detector
D. Sprinkler water flow alarm test valve
The term you want to include in the answer is "elevator recall."
All of the following will recall designated elevator cars EXCEPT:
A. #1620 key at the selected elevator bank
B. Manual station on all floors
C. Any elevator lobby smoke detector
D. Sprinkler water flow alarm test valve
D. Sprinkler water flow alarm test valve
The sprinkler water flow alarm test valve is not used for elevator recall. The other options (A, B, and C) are all methods that can be used to recall designated elevator cars.
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It has been observed that cast metal parts produced using low pouring temperatures (pouring
temperature closer to the melting point of the metals) form finer grains compared to high pouring
temperatures. Explain why.
About cast metal parts, temperatures, and grains.
The reason cast metal parts produced using low pouring temperatures form finer grains compared to high pouring temperatures is due to the difference in cooling rates.
When the pouring temperature is closer to the melting point of the metal, the cooling rate is faster. This rapid cooling causes the formation of a greater number of nucleation sites, where grains begin to form. As a result, the grains have less time to grow, leading to the formation of finer grains.
On the other hand, when the pouring temperature is higher, the cooling rate is slower. This allows the grains more time to grow, resulting in larger grains.
In summary, cast metal parts produced using low pouring temperatures form finer grains compared to high pouring temperatures because the faster cooling rate leads to more nucleation sites and less time for grain growth.
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5. a bucket full of water has two holes of equal size in it: a and b. which statement about the flow rate through the holes is true?
The appropriate answer is The flow through A is the same as the flow through B. Option B
Why is the through A same as the flow through B?Since that holes A and B are the same size as shown in the diagram and are situated at the lower end of the container on the right side of the diagram, they most likely are the same height. If both holes are the same size in this situation, the flow rate through them will be the same.
The above answer is based on the full question below;
a bucket full of water has two holes of equal size in it: a and b. which statement about the flow rate through the holes is true?
a. the flow through A is more then the flow through B
b. The flow through A is the same as the flow through B
c. The flow through A is less than the flow through B
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6. Where and when is a duct smoke detector required?
A duct smoke detector is required in specific locations within the heating, ventilation, and air conditioning (HVAC) systems of commercial and industrial buildings. They are typically installed to prevent the spread of smoke and fire through the ductwork. According to the National Fire Protection Association (NFPA) Standard 90A, duct smoke detectors should be placed in the following locations:
1. In the supply air ducts of air handling systems with a capacity greater than 2,000 cubic feet per minute (CFM).
2. In return air ducts or plenums of air handling systems with a capacity greater than 15,000 CFM.
3. In each story of a building, including the return air system.
It is crucial to consult local building codes and regulations for specific requirements, as they may vary depending on your location. Additionally, duct smoke detectors should be maintained and tested regularly to ensure proper functionality.
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consistency near the plastic limit - roll into 1/8" string
toughness
Consistency near the plastic limit refers to the state of a material, when it is just about to lose its plasticity and become brittle. When attempting to roll this material into a 1/8" string it is important to be aware of its toughness.
Consistency near the plastic limit refers to the state of a material when it is just about to lose its plasticity and become brittle. When attempting to roll this material into a 1/8" string, it is important to be aware of its toughness. Toughness is a measure of the ability of a material to resist fracture under stress. Therefore, if the material is too brittle and lacks toughness, it may not be able to withstand the rolling process and could break or crack. It is important to monitor the material's plasticity and toughness throughout the rolling process to ensure a successful outcome.
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what data-structures linker will use and what will be the values of all the variables and data-structures at the end of pass 1 of linkage editor?
A linker can use any of the following data structures during pass 1 of its operation:
Symbol table - a data structure that stores information about symbols defined and referenced in the object files and may contain entries for functions, variables, etc, with their associated addresses and attributes.
A relocation table is a data structure that stores information about the locations in the object files that need to be modified during the linking process. It contains and specifies the type of relocation and the associated symbol.
The linker may use data structures to represent the object files that are being processed, such as a format-specific data structure like ELF, or COFF that stores the object file's sections, symbols, and other attributes.
During pass 1, the linker may also use Loader Data Structures that represent the layout and organization of the target system's memory, such as segments or sections that will be used to load the executable program or shared library.
The actual values of these variables and data structures will depend on the specific input files being processed and the linker's implementation.
What does a linker do?A linker is in charge of resolving symbols (such as function or variable names) in object files and libraries and generating an executable program or shared library.
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Where are Double-Tee precast concrete usually found?
A Double Tee is a pre-stressed concrete product used for parking structures, roofs and floors, where long spans are required and/or heavy loads must be supported. They are manufactured in a protected shelter which provides controlled curing. Double tees can be installed quickly to cover large areas in a single day.
Double-Tee precast concrete is usually found in structures such as parking garages, industrial buildings, and commercial buildings. These components provide a strong, durable, and versatile solution for creating large open spaces with minimal support columns.
Double tee slabs are usually employed in construction because they shorten construction time. reduce congestion at the construction site, and also reduce construction cost.
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What is another term used for "Stray currents"?
A) Short circuits
B) Positive currents
C) Impressed Currents
D) Interface currents
When there are imbalances in the electrical supply system or wiring problems, stray current occurs when electricity flows through structures, the ground, or machinery. Thus correct option is A.
Thus, It alludes to the possibility of electrical potential between objects that shouldn't be exposed to voltage. Galvanic discharge caused by stray current that uses AC arresters and limiters.
High-end metrology technology can be used to accurately measure and record stray currents.
In order to avoid destroying metals and other buildings, stray current should be eliminated because it can speed up the corrosion of metal.
Thus, The ideal option is A.
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In Python when we say that a data structure is immutable, what does that mean?
When we say that a data structure is immutable in Python, it means that its values cannot be changed after it has been created. Any attempt to modify an immutable object will result in the creation of a new object with the updated value, rather than changing the original object. This property of immutability is useful for ensuring data integrity and avoiding accidental modifications to important data. Examples of immutable data structures in Python include strings, tuples, and frozensets.
In Python, an immutable data structure is a data structure that cannot be changed once it is created. This means that if a value is assigned to an immutable data structure, it cannot be modified later, and any operation that attempts to modify the data structure will create a new object with the modified value.For example, tuples in Python are immutable data structures. Once a tuple is created, its contents cannot be changed. If you try to modify a tuple, Python will raise a TypeError.
my_tuple = (1, 2, 3)
my_tuple[0] = 4 # This will raise a TypeError because tuples are immutable
In contrast, mutable data structures, such as lists and dictionaries, can be modified after they are created. This means that you can add, remove, or modify elements in a list or dictionary after they are created.Overall, immutability is a useful property in programming because it makes it easier to reason about the behavior of code and reduces the risk of unintended side effects. In Python, when we say that a data structure is immutable, it means that the elements within the data structure cannot be changed or modified after they are created. Some examples of immutable data structures are strings and tuples. Once an immutable object is created, its state and contents remain constant throughout its lifetime.
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Non-essential welding variables must be recorded:
A) only on the PQR
B) only on the WPS
C) only on the WPQ
D) on both the PQR and WPS
D) Non-essential welding variables must be recorded on both the PQR (Procedure Qualification Record) and WPS (Welding Procedure Specification).
The PQR documents the actual welding parameters used during the qualification test, while the WPS provides instructions for future welding operations based on the PQR data. It is important to record all welding variables to ensure consistent and quality welds are produced.
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You have been asked to monitor baseline API usage so that a rate limiter value can be set. What is the purpose of this?
The purpose of monitoring baseline API usage is to determine the average or typical level of API requests being made over a certain period of time. This information can then be used to set a rate limiter value, which is a threshold for the maximum number of API requests allowed within a certain time frame. By setting a limiter value based on the baseline usage, it helps to prevent excessive usage and potential system overloading, while also ensuring that all users have fair and equal access to the API.
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5. Which is the better extinguisher to use for a mattress fire?
The best type of fire extinguisher to use on a mattress fire is a Class B extinguisher.
What is a class B extinguisher?
Class B extinguishers are designed to extinguish fires caused by flammable liquids and gases, such as gasoline, oil, and propane, which can also include the polyurethane foam often found in mattresses.
It's important to note that using water or a Class A extinguisher on a mattress fire can actually make the fire worse, as water can spread the flames and a Class A extinguisher is not designed to extinguish fires caused by flammable liquids or gases.
Additionally, in the event of a fire, it's important to prioritize your safety and evacuate the area immediately if the fire cannot be contained quickly and safely.
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23. ELEVATOR IN READINESS is required in every building ___ feet or more in height.
ELEVATOR in readiness is required in every building 150 feet or more in height.
All levels of the building will be served by the elevator when it is ready. All floors of a structure that has a fire service access lift (FSAE) must be served by the FSAE. At all times, there must be someone qualified to operate the lift.
Yet building with habitable floors which are 150 feet or less than the foundation of the Fire Department access road and consist of lifts with automated or continuous pressure operation and keyed switches that meet the specifications are exempt from an essential for an attendant.
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Outline one usability issue associated with the design of mobile devices?
One usability issue associated with the design of mobile devices is the limited screen size. This issue can lead to difficulties in reading text, navigating through menus, and accurately selecting small buttons or links on the touchscreen.
One usability issue associated with the design of mobile devices is the small size of the screen. Due to the compact size of mobile devices, the screen space is limited, which can result in difficulty in navigating and interacting with the device. As a result, it can cause user frustration and negatively impact the overall user experience.
Users may have to zoom in and out frequently to access different sections of the screen, which can lead to frustration and reduce the overall usability of the device. In addition, the small size of the screen can make it difficult for users to read text and view images, especially for users with vision impairments. This can impact the accessibility of the device, which is an important consideration for ensuring equal access for all users.Therefore, designers need to consider ways to optimize the screen space on mobile devices while still ensuring usability and accessibility for all users.
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Experimental measurements of the convection heat transfer coefficient for a square bar in cross flow yielded the following values: h1 = 50 W/m². K when V1 = 20 m/s h2 = 40 W/m². K when V2 = 15 m/s L = 0. 5 m
Assume that the functional form of the Nusselt number is Nu = C Re" Pr", where C, m, and n are constants. (a) What will be the convection heat transfer coefficient for a similar bar with L = 1 m when V = 15 m/s? (b) What will be the convection heat transfer coefficient for a similar bar with L=1 m when V = 30 m/s? (c) Would your results be the same if the side of the bar, rather than its diagonal, were used as the char- acteristic length?
a. The convection heat transfer coefficient for a similar bar with L = 1 m when V = 15 m/s is 0.7756.
b. The the convection heat transfer coefficient for a similar bar with L=1 m when V = 30 m/s is 34.24W/m²K.
c. The convective coefficient is 58.6W/m²K.
How to calculate the valuesConsider the correlation for Nusselt's number.
Nu= C Re" Pr"
hL k VL = Pr"
Here, k is thermal conductive coefficient, v is the viscosity, and Pr is the Prandtl number.
Following parameter will remain unchanged:
k, L, Pr, C, v, m, and n.
Calculate the ratio of Nusselt's numbers,
Nu hL VL
= Nu h = VL
50 40 20×0.5 15×0.5
1.25 = 20 15
m=0.7756
Part (b)
Calculate the convective coefficient. 0.7756
hL h₂L₂ VL VL2
h=50x 0.5 15×1 1 20×0.5 0.7756
h=34.24 W/m² K
Part (c)
Calculate the convective coefficient.
h, L, = VL
h=50x 0.5 30×1 1 20×0.5 0.7756.
h=58,6 W/m2 K
Part (d) When characteristics length is taken as a side instead of diagonal. the value of constant C will change. But result will not change.
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