Expansion Valve Rubric Quiz

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Questions and Answers

What is a characteristic of the First Law for Expansion Valve as described?

  • It has multiple terms that are always simplified.
  • It contains both simplified and unsimplified terms. (correct)
  • There are only correct simplifications presented.
  • It has one term that is always incorrect.

What does the rubric categorize as exemplary input?

  • Most inputs defined but lacking clarity.
  • Detailed inputs without any units.
  • All inputs defined with some appropriate units.
  • Every input defined with appropriate units. (correct)

Which scoring category indicates a developing level of performance?

  • Developing (correct)
  • Average
  • Exemplary
  • Exceptional

If a student's work is missing many inputs, which category would it likely fall under?

<p>Developing (C)</p> Signup and view all the answers

What is the maximum score possible according to the rubric for Detailed Inputs?

<p>25 (C)</p> Signup and view all the answers

How does the rubric define inputs that are 'Above Average'?

<p>Some missing inputs and/or units. (B)</p> Signup and view all the answers

What score corresponds to a section that is detailed but with missing few inputs?

<p>20 (D)</p> Signup and view all the answers

Which term describes a First Law that has at least one term incorrect?

<p>Unsimplified (D)</p> Signup and view all the answers

What must a complete algorithm include?

<p>All necessary variables and equations (B)</p> Signup and view all the answers

Which of the following is NOT a requirement for an algorithm to be deemed complete?

<p>It must include only one equation (C)</p> Signup and view all the answers

What is implied by the statement that 'all items must be defined prior to use' in an algorithm?

<p>All necessary data must be explicitly stated before implementation (C)</p> Signup and view all the answers

An algorithm that includes multiple assumptions but fails to define its variables is seen as:

<p>Incomplete and potentially erroneous (D)</p> Signup and view all the answers

What is the highest score possible for the 'Simplified First Law for Evaporator' section?

<p>20 (A)</p> Signup and view all the answers

Which aspect of the algorithm primarily involves data manipulation?

<p>Final results presentation (A)</p> Signup and view all the answers

Which condition corresponds to an 'Above Average' score for the First Law in the Evaporator section?

<p>First Law has one term that is correct after simplification. (D)</p> Signup and view all the answers

What would result in a score of zero for the First Law in the Heat Exchanger section?

<p>First Law contains at least one incorrect term after simplification. (C)</p> Signup and view all the answers

Which of the following statements is true regarding the scoring for the First Law sections?

<p>The scoring criteria differ between sections. (D)</p> Signup and view all the answers

How does a score of 15 relate to the First Law for Evaporator section?

<p>Indicates the First Law is not simplified correctly after simplification. (B)</p> Signup and view all the answers

What would be considered 'Exemplary' performance in the 'Simplified First Law for Heat Exchanger' section?

<p>The First Law is appropriately simplified according to the guidelines. (D)</p> Signup and view all the answers

What is the primary distinction between the 'Above Average' and 'Developing' scores?

<p>Developing results in either not simplified or too many errors. (A)</p> Signup and view all the answers

What type of performance corresponds to the maximum score of 20 points for the First Law?

<p>Accurate simplification with no errors. (D)</p> Signup and view all the answers

What can occur if inputs or validations are programmed incorrectly?

<p>The outputs may be inaccurate or unreliable. (B)</p> Signup and view all the answers

Which of the following statements about code for Task 3 is correct?

<p>The code for Task 3 is missing some parts. (D)</p> Signup and view all the answers

What is essential for finding enthalpies correctly?

<p>Using interpolation where necessary. (C)</p> Signup and view all the answers

What is a consequence of missing data inputs or validations?

<p>Potential errors in calculations. (C)</p> Signup and view all the answers

What is indicated if validations are done incorrectly?

<p>There may be significant issues with data integrity. (A)</p> Signup and view all the answers

What does the exemplary score for the Results CSV File indicate?

<p>All results are correct. (B)</p> Signup and view all the answers

Which aspect of the Compressor Work Output is noted as 'above average'?

<p>Units are slightly incorrect. (D)</p> Signup and view all the answers

What is the maximum score allocated for the Heat Removed Output?

<p>33 points. (D)</p> Signup and view all the answers

If a student's work shows more than one incorrect result in the Results CSV File, what score would they receive?

<p>0 points. (D)</p> Signup and view all the answers

What does it mean if the units in Heat Removed Output are slightly incorrect?

<p>It falls into the developing category. (A)</p> Signup and view all the answers

What score is given for Compressor Work Output when it is correct?

<p>33 points. (C)</p> Signup and view all the answers

In which scenario would a student receive a score of 25 for the Results CSV File?

<p>One result is incorrect. (C)</p> Signup and view all the answers

What is required for a score of 34 points in the Results CSV File section?

<p>All results must be correct. (D)</p> Signup and view all the answers

What does the exemplary score for Code for Task 1 represent?

<p>Data is loaded correctly and all validations are complete. (A)</p> Signup and view all the answers

Which of the following would lead to a developing score for Code for Task 1?

<p>One validation is incorrectly completed. (A), Two data validations are missing. (B)</p> Signup and view all the answers

In the rubric for Deadline C, what total points can be obtained for Code for Task 2?

<p>25 points (B)</p> Signup and view all the answers

What distinguishes an above average score for Code for Task 1?

<p>Most data validations are complete with minor errors. (A)</p> Signup and view all the answers

Which statement is NOT true regarding the scoring for Code for Task 1?

<p>Scoring is limited to only two criteria for validation checks. (D)</p> Signup and view all the answers

What is the consequence of having more than two data validations missing for Code for Task 1?

<p>The score will be developing. (A)</p> Signup and view all the answers

For a student to achieve a score of 25 for Code for Task 2, what must occur?

<p>The code must work correctly with two inputs. (C)</p> Signup and view all the answers

Which criterion leads to a total score of 0 for Code for Task 1?

<p>Data fails to load completely with no validations attempted. (C)</p> Signup and view all the answers

Flashcards

Exemplary Simplified First Law

A simplified version of the First Law of Thermodynamics is written and explained accurately, using only the key concepts and adhering to the provided information.

Above Average Simplified First Law

A simplified version of the First Law of Thermodynamics is written with one incorrect term after simplification.

Developing Simplified First Law

The First Law of Thermodynamics is either not simplified or contains more than one incorrect term after simplification.

Score 0 Simplified First Law

The student has failed to simplify the First Law of Thermodynamics effectively.

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Exemplary First Law for Evaporator

The student's simplified version of the First Law of Thermodynamics is written and explained accurately, using only the key concepts and adhering to the provided information.

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Above Average First Law for Evaporator

The student's simplified version of the First Law of Thermodynamics for an evaporator has one term that is incorrect after simplification.

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Developing First Law for Evaporator

The student's simplified version of the First Law of Thermodynamics for an evaporator is either not simplified or has more than one term that is incorrect after simplification.

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Score 0 First Law for Evaporator

The student has failed to simplify the First Law of Thermodynamics effectively for an evaporator, either not simplifying at all or having several inaccuracies in the explanation.

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What makes a complete algorithm?

A complete algorithm includes all necessary equations, assumptions, and variables. It ensures all calculations are valid and there's enough information for the algorithm to run successfully.

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What is an incomplete algorithm?

An incomplete algorithm happens when there is at least one missing equation, assumption, or variable. This may lead to incorrect calculations or missing information.

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How many missing components make an algorithm unusable?

An algorithm can be missing more than two equations, assumptions, or variables. This makes solving it nearly impossible.

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Why is it important to define components in an algorithm?

All components in an algorithm (equations, assumptions, and variables) should be defined before being used. This prevents confusion and ensures everyone understands what each component means.

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What happens when components are not defined in an algorithm?

When components are not defined before being used, it leads to confusion and potentially erroneous calculations. You can't use something if you don't know what it is.

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Simplified First Law for Expansion Valves (Incorrect)

The simplified first law of expansion valves is incorrect if it has more than one term.

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Simplification of Laws

The simplified version of a law, concept, or formula might have a different number of terms than the original.

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Information Loss in Simplification

A simplified law may have lost some information from the original, leading to inaccuracies.

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Total Score for Incorrect First Law

The simplified first law of expansion valves has a score of 0 if it includes more than one term that's incorrect after simplification.

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Rubric for Detailed Inputs

A rubric for assessing the details of input information, such as units.

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Rubric

A rubric is a tool used to evaluate and assess work, often by assigning numerical scores to different aspects.

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Importance of Units

The inclusion of units when providing input information is essential for the correct and meaningful interpretation of data.

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Detailed Inputs Section

A section that provides information about all the inputs required for a specific process, ensuring their completeness and correctness.

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Complete Algorithm

An algorithm is considered complete when it includes all necessary equations, assumptions, and variables, ensuring correct calculations and sufficient information for execution.

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Incomplete Algorithm

If an algorithm is missing at least one equation, assumption, or variable, it's considered incomplete, potentially leading to errors or missing information.

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Unusable Algorithm

When an algorithm lacks more than two equations, assumptions, or variables, it becomes unusable. Solving it becomes nearly impossible.

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Why Define Components?

Defining components in an algorithm ensures clarity and prevents confusion. It's crucial for everyone to understand what each component represents.

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Consequences of Not Defining Components

Not defining components leads to confusion and potentially wrong calculations. You can't use something if you don't know what it is.

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Exemplary Code for Task 1

The code for Task 1 is working, all required data is loaded, and all data validations are completed correctly.

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Above Average Code for Task 1

The code for Task 1 is working, the data loads, but one or two data validations are missing or completed incorrectly.

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Developing Code for Task 1

The code for Task 1 doesn't work, data may not be fully loaded, or more than two data validations are missing or completed incorrectly.

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Exemplary Code for Task 2

Code for Task 2 is working.

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Above Average Code for Task 2

Code for Task 2 is working, but there are minor issues with it that can potentially be addressed with minor adjustments.

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Developing Code for Task 2

More than two inputs were not processed correctly by the code. The task is incomplete.

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Score 0 Code for Task 1 and 2

The code for Task 1 needs more work, as data is not loaded properly or there are more than two validation issues that were not completed correctly. The code for Task 2 is not working.

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Score 0 Code for Task 1 and 2

The code for Task 1 needs more work, as the data is not loaded properly or there are more than two validation issues that were not completed correctly. The code for Task 2 is not working.

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What defines a complete algorithm?

An algorithm is deemed complete when all necessary equations, assumptions, and variables are present. It ensures a smooth and accurate calculation process.

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What constitutes an incomplete algorithm?

An algorithm is classified as incomplete when at least one equation, assumption, or variable is missing. This can lead to errors in the results or incomplete information.

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Can simplification cause information loss?

The loss of information during the simplification of a law or formula can lead to inaccuracies in the simplified version.

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What is a rubric?

A rubric helps assess different aspects of work, often assigning numerical values. It provides clear criteria for evaluating the quality of work.

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Why are units important?

Units are crucial for clear data interpretation. They provide context and ensure that the information is measured correctly.

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What is compressor work output?

The compressor work output represents the energy used to compress a refrigerant. It's important to understand this energy transformation during the refrigeration cycle.

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What is heat removed output?

The heat removed output refers to the amount of heat extracted from the environment during the refrigeration cycle. This is the cooling effect achieved.

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How do simplified versions differ?

The simplified version of a law, formula, or concept may have a different number of terms than the original form. This indicates a simplification process took place.

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Study Notes

Rubric for Deadlines A-D

  • Grading Rubric: This document outlines criteria for scoring tasks related to deadlines A through D. Each deadline has different sections (e.g., "Detailed Inputs," "Detailed Outputs," "Detailed Workflow") with varying point values and associated criteria.

Task Specific Grading Criteria

  • Exemplary: All criteria are met accurately and completely. Specific details depend on the task. For example:
    • Code for Task 1: All data loads and appropriate data validations are completed correctly;
    • Code for Task 2: All inputs and data validations are programmed correctly;
    • Code for Task 3: Enthalpies calculated correctly, including interpolation as needed.
  • Above Average: Almost all criteria are met, with minor omissions or inaccuracies. Example:
    • Code for Task 1: Appropriate data loads but one or two data validations are missing or slightly incorrect.
  • Developing: Many criteria are not met or contain significant mistakes. Examples:
    • Code for Task 1: Data not loaded correctly, more than two data validations missing or incorrect.
    • Code for Task 2: Missing multiple inputs or data validations or if done incorrectly
  • Score: Numerical grade given based on the rubric's criteria for each task.

Specific Task Breakdown

  • Section: Identifies the specific part of the task or deadline being evaluated (e.g., "Detailed Inputs," "Results CSV File," "Compressor Work Output")
  • Total Points: Maximum possible points for that section.
  • Criteria: Explains what an exemplary, above-average, developing, and failing submission should contain or lack. Different results are expected for each section. Units, complete calculations, data loading accuracy, and logical algorithms are key factors.

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