Describe what is meant by quenching in a proportional counter and give an example of a suitable gas that could be used (include an explanation as to why it is desirable to do this).

1.
(a) With reference to the various processes called quenching in gas-filled detectors:
c, Describe what is meant by quenching in a proportional counter and give an example of a suitable gas that could be used (include an explanation as to why it is desirable to do this). [2 MARKS]
cio Describe what is meant by quenching in a Geiger-Muller counter and give an example of a suitable gas that could be used (include an explanation as to why it is important to do this). [2 MARKS]
ow Describe why the transfer of charge between positive ions and neutral molecules is vital in gas quenching inside a Geiger-Muller counter (include an explanation as to why this happens). [2 MARKS]
(b) With reference to a typical cylindrical proportional counter,
(0 Sketch a graph to illustrate the magnitude of the signal produced by the counter as a function of the applied bias voltage assuming the same amount of energy deposited at each voltage and showing the range from zero up to the electrical breakdown of the detector. Carefully annotate your graph to make clear the important features. [2 MARKS]
(ii, State how the size of the signal changes in such a counter when the amount of energy deposited in the counter is changed, for the different voltage regions of your graph.
[3 MARKS]

Highlight an emerging technology that relates to renewable energy.What are your thoughts regarding this technology?

Emerging Technologies

Highlight an emerging technology that relates to renewable energy.

What are your thoughts regarding this technology?

Do you think this technology will continue to grow? Why or why not?

Post additional photos or web links or current event article and summarize what the photo or video or article means to you.

In at least 250 word minimum

Explain how to actuate a first,second,and third class lever hydraulic system.

HW2: Fluid Power DCV Design Challenge

To deepen your understanding of DCVs and their operation in a fluid power circuit, you will use computer drawing tools to design a basic two-position, 4-way, directional control valve and explain how it works. Using computer drawing, you will use your design to explain how to actuate a first,second,and third class lever hydraulic system as we discussed previously. The first draft is due Wednesday, October 27, 2021

Distinguish between fixed and variable displacement designs of the above pump types.

Introduction to Hydraulic Pump Design and Pump Efficiency

Purpose:

The purpose of this project is to deepen your understanding of the different types of hydraulic pumps and how they operate. You will also learn how to differentiate between fixed and variable displacement designs and how to calculate pump efficiencies (mechanical, overall, and volumetric efficiencies). The majority of the above learning will be accomplished by using visualization techniques which will involve basic and detailed drawings and/or diagrams. Remember the old saying: “A picture speaks a thousand words.”

Objectives:

By the end of this assignment, students will be able to do the following:

1) Identify the (3) major pump types used in fluid power systems.

2) Distinguish between fixed and variable displacement designs of the above pump types.

3) Describe the operation of the above various pump types using visualization techniques.

4) Understand that every pump design has limitations and is not 100% efficient.

5) Explore trade-offs between pump types.

Instructions:

Draw and label each part of the following types of pumps and explain how they function to produce hydraulic fluid flow:

1. Gear Pump (fixed)

2. Vane Pump (fixed)

3. Vane Pump (variable)

4. Piston Pump (fixed)

5. Piston Pump (variable)

For starters, read the assigned text and watch the following video that shows animations of hydraulic pumps and use it to inform your design practice.

https://www.youtube.com/watch?v=Qy1iV6EzNHg (Links to an external site.)

Understanding how these pumps work will assist you with more detailed calculations that we will discuss in later units especially as it concerns volumetric displacement and the amount of flow a pump can produce. Note that this is not the only “how do hydraulic pumps work?” resource available. Share other helpful resources on your reference page.

Again, remember to include all references (3 total/peer reviewed). Recommend first drawing by hand then use computer drawing tools (e.g. Word, PowerPoint, other) to generate each diagram. Each diagram is worth 20 points. 100 pts total.

You will be graded on the following:

Overall quality/neatness of drawing

Drawing and labeling of each part

Explaining how each part works in achieving flow. Follow a logical flow of ideas.

Note that pumps and rotary motors work similar in principle. We’ll use this assignment to double-down on our learning. You have one week to complete this assignment.

Describe the trade-offs in different molding plans and why you chose the plan you did.

Plastic product design

Q1- Your company is bidding on a new wheel cover as a GM Tier 1 supplier. The part has a diameter of 300 mm and thickness of 3mm and is made of ABS plastic. The quantity required is 100,000 per month. Describe your tooling plan offering. You can use hypothetical injection molding machine specs, or preferably specs from actual machines from your work or the internet.

Describe the trade-offs in different molding plans and why you chose the plan you did. (15 pts.)

Useful data: ABS power law viscosity, k, 1.71e4 Pa-s, and a power law index, n, of 0.348.

Q2- 11. Your company wants to produce a baby stroller with a snap-fit cap as in the attached picture to retain the wheels. The desired material is ABS with a flex modulus of 2280 MPa. The cap is 60mm in diameter and has walls 2.5 mm wide. There are two retaining snaps that are curved (crowned) cantilever beams with constant cross section which are 50 mm long and 40 mm wide and are curved to match the cap’s outer diameter. The snaps must deflect 6.24 mm to engage.

The lead in angle is 30 degrees and the coefficient of friction, µ, is 0.5. How much force deflection force will the snaps retain and how much will be required to push it on? Report the value in pounds. Note for stiffness factor h=6.24 mm, extrapolate the appropriate curve.(15 pts.