PTAC and window-unit air conditioners often use rotary compressors, which are effective but susceptible to failure due to high head pressure. What is the most common cause of high head pressure in these units

Answer:

you cannot park

Explanation:

except you park in a compound because it is a two way road parking on either side could lead to accident or goslow

Answer:

the capability of weight and lifts

Answer:

Design a solution

Explanation:

In the design a solution stage, solutions and ideas to solve the problem or design of the product are generated and details of the problem solution or product design are developed

The generated ideas and details are put together to get a workable solution

Stages of technological design, includes

1) Problem identification

2) Design a solution or designing of a product

3) Design Implementation

4) Solution or product evaluation

The Answers for the given question are as follow:

a. The model speed is approximately 31.62 rev/min.

b. The scale ratio is approximately 0.0417.

c. The estimated volume flow rate through the model is approximately 943.44 m^3/s.

d. The bearing thrust of the model is approximately 9.72 kN.

To calculate the required values for the water turbine model, we can utilize the concept of dynamic similarity.

a. To find the model speed, we can use the principle of geometric similarity, which states that the ratio of speeds is equal to the ratio of the square roots of the head. Thus:

  Model speed = (√(Model head))/(√(Full-size head)) * Full-size speed

              = (√4.9/√16.5) * 93.7 rev/min

              = 31.62 rev/min

b. The scale ratio can be determined using the equation:

  Scale ratio = (√(Model power))/(√(Full-size power))

             = (√37.5kW)/(√27MW)

             ≈ 0.0417

c. To estimate the volume flow rate through the model, we can use the power equation:

  Model power = (Model efficiency) * (Volume flow rate) * (Model head) * (Gravity)

  37.5kW = 0.88 * (Volume flow rate) * 4.9m * (9.81m/s^2)

  Solving for the volume flow rate:

  Volume flow rate = 37.5kW / (0.88 * 4.9m * 9.81m/s^2)

                   ≈ 943.44 m^3/s

d. To calculate the bearing thrust of the model, we can use the principle of force similarity:

  Bearing thrust model = (Model power / Full-size power) * Full-size bearing thrust

                      = (37.5kW / 27MW) * 7.0GN

                      ≈ 9.72kN

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The examples of engineering controls is Biohazard waste containers and Spill clean up kits.

What is engineering controls?

An engineering controls is a workplace process that protect workers by removing hazardous conditions or by placing a barrier between the worker and the hazard.

An example of engineering controls is installation of exhaust ventilation to remove airborne emissions to shield the worker.

Hence, the examples of engineering controls is Biohazard waste containers and Spill clean up kits.

Therefore, the Option C and D is correct.

The statement made by Technician A is inaccurate. The hybrid car's electric propulsion system does not boost the idle speed of the internal combustion engine.

Rather than idling the engine, the electric motor is usually able to supply power when the vehicle is at a standstill or moving at a slow pace, thus resulting in reduced or eliminated engine idle needs.

The accuracy of Technician B's statement is somewhat accurate. Hybrid cars' regenerative braking systems efficiently accumulate the energy released during deceleration, converting it into electrical energy and storing it in the battery.

The system's responsibility of reducing the vehicle's speed can actually diminish the wear on usual brake components, rather than intensifying it. The reason for this is that the vehicle requires lower levels of friction when the regenerative braking is actively assisting in decelerating.

Both Technician A and Technician B are partly erroneous in their assertions.

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Answer:

engineers create things that are needed in the market

Explanation:

Answer:

A piston aids in the transformation of heat energy into mechanical work and vice versa.

Answer:

people are selfish b - scarcity exists c - there is not enough economic growth in the world d -

Explanation:

Answer:

If your brakes go out, you want to do three things.

Explanation:

First, downshift to a lower gear. Second, if you have regular brakes pump the brake pedal fast and hard to build up brake fluid pressure.  Gradually apply the parking brake and be prepared for the car to skid. hope this helps you :)

Answer:

Windshield Wipers use Reciprocal motion.

Cams and Valves use Reciprocal motion.

Pistons use Linear motion.

Fuel Injectors and Accelerators use Rotary motion.

Steering Columns use Rotary motion.

Gears use Rotary motion.

Suspensions use Oscillating motion.

Brakes use Rotary motion.

Developments in Chemistry brought innovative synthetic materials including plastics, fabrics, and fiberglass resins.

Synthetic materials are man-made materials created through chemical processes. They are used in a variety of applications, from clothing to construction and automobile manufacturing. Synthetic materials are usually derived from petroleum but can also be created from other sources such as plants. Some of the most common synthetic materials include polyester, acrylic, nylon, and vinyl. These materials are often used due to their durability, low cost, and wide range of applications. Synthetic materials are also renowned for their ability to be manipulated and tailored to suit specific needs. For example, polyester can be made waterproof which makes it ideal for outdoor apparel. Synthetic materials are also resistant to staining and fading, which can make them a great choice for furniture and upholstery.

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Based on the concept of engineering lessons, making a paper airplane relates to STEM in many ways as it develops students to have key scientific concepts like aerodynamics, velocity, thrust, speed, and other scientific forces.

STEM is an acronym word for Science technology, engineering, and mathematics combined as various academic disciplines.

Generally, the term STEM is commonly used to cover an education policy or curriculum choices in schools. It has significance for workforce development, national security concerns, and immigration policy.

Given that making a paper airplane has many engineering principles, it is concluded that it relates to the STEM discipline in many ways.

Therefore, making and playing with paper planes among the students can lead to conversations about aerodynamics (the forces that impact plane flight): thrust, lift, drag, and gravity/weight.

In some cases, like high school children, it is expected that they can learn about plane movements like roll, yaw, and pitch all of which were established based on the principle of STEM

Hence, in this case, it is concluded that making the paper plane is related to STEM in many ways.

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Uniform velocity refers to those velocity in which equal displacement is covered in equal interval of time....

In industrial and commercial installations, where large motors are often found, it is necessary to power each motor by: B. using AC.

An electric motor can be defined as an electrical machine that is designed and developed to convert electrical energy into kinetic energy, especially through the use of an alternating current (AC) and electromagnetic induction.

An alternating current can be defined as a type of current that reverses direction periodically, and it is generally accompanied by continuous changes in its magnitude with respect to time.

In industrial and commercial installations, where large motors are often found, it is necessary to power each motor by using alternating current (AC) because these motors usually generate more torque.

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Note that the Unit of Measure for electricity consumption is: "Kilowatt-Hour" (Option B)

Unit of measure is important because it provides a standardized way of expressing quantities and measurements that can be easily understood and communicated across different contexts and languages.

It ensures consistency and accuracy in scientific, commercial, and industrial applications, and facilitates efficient exchange of goods and services.

Without standardized units of measure, there would be confusion, errors, and inefficiencies in all aspects of daily life that involve measurements, from cooking recipes to international trade.

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The correct answer is C. Biomedical engineering.

The area of Biomedical engineering is a distinct field that utilizes methods and concepts from engineering to address medical challenges and innovations.

The task involves enhancing healthcare delivery, diagnosis, and treatment via the creation and engineering of diverse medical devices, equipment, and pharmaceuticals.

A vast array of products falls under this area, such as tools for diagnosing medical conditions like magnetic resonance imaging (MRI) and computerized tomography (CT) scanners, medical equipment for treatment purposes such as pacemakers or insulin pumps, medications for various illnesses, and prosthetic limbs designed to aid those with limited mobility.

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Answer: They range from an interference fit, where the parts are purposely made to be forced together. This fit can be further described as heavy through to light interference. Whereas a clearance fit is for parts made to have a space between them. This fit can be further described as tight through to loose.

Explanation: hope this helped ;)

Main differences between clearance, interference, and transition fit:

clearance fit: Occurs when two toleranced matings parts will always leave  a space or clearance   when assembled

interference fit : Occurs when two toleranced mating parts will always interfere when assembled

Transition fit: Occurs when two toleranced mating parts sometimes have an interference fit and sometimes a clearance fit, a mechanical fit that can achieve a clearance or interference fit while staying within the desired tolerance.

What are the examples of fit ?

Examples of clearance interference and transition fit, interference fit  :

Bolt or shaft holes that allow an element to freely slide through another feature are examples of clearance fits.

Tight fit and push-fit, wringing fit, press fit.

The interference fit, which is also known as a press fit or friction fit, requires some force to unite two components. An interference fit can be used to press a bushing, bearing, dowel pin, or other objects into their mate components.

Hence above are the main differences between various fits

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The pseudocode from the Coding Log is given below.

# Intro

Print "Welcome to the adventure game!"

Ask for player name and store it in a variable

Print "Hello [player name], let's start the game!"

# Part 1

Print "You find yourself in a dark room with two doors. Do you go through door 1 or door 2?"

Use input() function to get player's choice and store it in a variable

Use a while loop to ensure the player's input is valid (either "1" or "2")

If player chose door 1, print "You find a treasure chest full of gold. Congratulations, you win!"

If player chose door 2, print "You fall into a pit and lose the game. Better luck next time!"

# Part 2

Print "You come across a fork in the road. Do you go left or right?"

Use input() function to get player's choice and store it in a variable

Use a while loop to ensure the player's input is valid (either "left" or "right")

If player chose left, print "You find a magical sword. You win!"

If player chose right, print "You encounter a troll and lose the game. Better luck next time!"

# Part 3

Print "You reach a river with a boat. Do you cross the river or follow the riverbank?"

Use input() function to get player's choice and store it in a variable

Use a while loop to ensure the player's input is valid (either "cross" or "follow")

If player chose cross, print "You safely cross the river and win the game! Congratulations!"

If player chose follow, print "You follow the river and eventually reach a waterfall. You lose the game. Better luck next time!"

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The answer is -0.016 N, and as it negative, the nature of the force is attractive.

Finding the force of attraction

Coulomb's Law is given by :

\(\boxed {F = \frac{kq_{1}q_{2}}{r^{2}}}\)

Solving

Answer:

1028.1184 Ohms

Explanation:

Given the following data;

Assuming the temperature coefficient of resistance for carbon at 0°C is equal to 0.0006 per degree Celsius.

To find determine its new resistance, we would use the mathematical expression for linear resistivity;

\( R_{89} = R_{0} + R_{0}(\alpha T) \)

Substituting into the equation, we have;

\( R_{89} = 976 + 976*(0.0006*89) \)

\( R_{89} = 976 + 976*(0.0534) \)

\( R_{89} = 976 + 52.1184 \)

\( R_{89} = 1028.1184 \ Ohms \)

Answer:

Planning is the process of thinking about the activities required to achieve a desired goal. ... It is the first and foremost activity to achieve desired results. It involves the creation and maintenance of a plan, such as psychological aspects that require conceptual skills.

The scope of BS computer science in Pakistan is quite vast

try this :)

To find the scale of your 3D model in relation to real life, you can use the following formula:

Scale = Real Life Size / Model Size

In your case, the real-life size of the bus shelter is given as 157 inches, and the model size is 14 inches. Plugging these values into the formula:

Scale = 157 inches / 14 inches

Scale ≈ 11.21

Therefore, the scale of your 3D model would be approximately 1:11.21. This means that one unit in your 3D model represents 11.21 units in real life. To convert any measurements from your 3D model to real-life measurements, you would multiply them by the scale factor.

Answer:

c, it also depends if the customer dropped the car and left. it would be best to talk to the customer.