Questions
Oasis Inc. which produces water wants to analyze the mineral contents (gm) in the bottle of...

Oasis Inc. which produces water wants to analyze the mineral contents (gm) in the bottle of 1 liter water they produce. Especially, they are interested in identifying the magnesium contents, which is one of the most important minerals in the water. The quality control engineer at their production unit randomly selected 7 bottles and then measured the mineral contents in the samples. The results obtained from the samples are as shown in the table below:
Sample#
Magnesium weight (gm)
1
11.3 + ……..=…….
2
12.2
3
11.7+……..= ……..
4
12.9
5
12.5+…….=……….
6
11.7
7
12.6
To obtain the weight for sample 1, sample 3 and sample 5 in the table, follow the instruction below:
If the fourth number of your student ID is in between:
- (0 & 3), then add 0.2 to the weight as shown in the table for samples 1, 3 and 5.
- (4 & 6), then add 0.6 to the weight as shown in the table for samples 1, 3 and 5.
- (7 & 9), then add 0.9 to the weight as shown in the table for samples 1, 3 and 5.
Fourth number is 5
For example, if student ID: 116523, then add 0.6 in the given data for samples 1, 3 and 5:
- Sample 1=11.3+0.6 =11.9
- Sample 3 = 11.7 +0.6 = 12.3
- Sample 5 = 12.5+0.6 = 13.1
a. Assuming that the population standard deviation is similar to the standard deviation obtained from the above samples, identify the bounds at ….. % confidence interval (CI)?
(4.0)
Note: If the last number of your student ID is in between:
- (0 & 2), then put CI as 92%
- (3 & 5), then put CI as 94%
- (6 & 7), then put CI as 96%
- (8 & 9), then put CI as 98%
Last number is 3
For example, if student ID: 116523, then CI = 94%.
b. If only one sided confidence bound is desired by the company at the lower tail, then what will be the lower bound for the date at the CI similar to (a). Discuss the difference in the lower bound as compared to (a) and give reason for the difference using simple figure(s).
(3.0)
c. If the company wants to have an error of less than 0.20 in estimating the magnesium content, then what sample size should the company use in part (b) for the analysis? (2.0)
ID=114985

In: Mechanical Engineering

Write a technical brief about non-traditional production processes of Hybrid Electrochemical processes and Express it very...

Write a technical brief about non-traditional production processes of Hybrid Electrochemical processes and Express it very technical aspects

In: Mechanical Engineering

1) Find out the standard time using the following data: Average time for machine elements =...

1) Find out the standard time using the following data:

Average time for machine elements = 6 min.

Average time for manual elements = 4 min.

Performance rating = 110%

Allowances = 10% of normal time

2) The actual observed time for an operation was 1 minute per piece. If the performance rating of the operator was 120 and a 5 per cent personal time is to be provided, the standard time in minute per piece is:

In: Mechanical Engineering

Historical development of water jet technology Original of water jet technology Development of water jet technology...

Historical development of water jet technology
Original of water jet technology
Development of water jet technology during the period of 1860s-1940s

In: Mechanical Engineering

Under normal operation, a dairy plant requires 4 kg/s of saturated steam at 2 MPa, which...

Under normal operation, a dairy plant requires 4 kg/s of saturated steam at 2 MPa, which is extracted from the turbine of a cogeneration plant. Steam enters the turbine at 8 MPa and 500 ºC at a rate of 11 kg/s and leaves at 20 kPa. The extracted steam leaves the process heater as a saturated liquid and mixes with the feedwater at the constant pressure. The mixture is then pumped to the boiler pressure. Determine. (a) the rate of process heat supplied, (b) the net power output and utilization factor for this operating condition, (c) the maximum process heat that this cogeneration plant can supply, (d) the net power output when there is no need for process heat.

Please reference all tables you use. Thanks.

In: Mechanical Engineering

how we can safe guard global warming?

how we can safe guard global warming?

In: Mechanical Engineering

The working gas of a thermodynamic cycle is air(assume constant specific heats.)The gas originally starts at...

The working gas of a thermodynamic cycle is air(assume constant specific heats.)The gas originally starts at 100kPa, 4m3and 27oC. It undergoes a four step process:Process A-B: The gas is compressed at constant temperature to one-fourth of its volume. Process B-C: The volume of the gas is then doubled at constant pressure. Process C-D:The gas then undergoes an adiabatic expansion.Process D-A:The gas then undergoes a constant volume process back to its original statea) Make a table of the temperature, pressure, volume, internal energy, enthalpy, entropy and quality factor (T, P, V, U, H, S & x) at the start of each process.b) Make a table of the change in internal energy, heat flow, work done, change in enthalpy, and change in entropy (U, Q, W, H, S) during each leg of the cycle.c) Draw a well-labelled P-v diagram (indicating lines of constant temperature.)d) Calculate the thermal efficiency of the cycle.

In: Mechanical Engineering

Explain single horseshoe vortex and its problem in predicting the aerodynamic properties of a finite wing/downwash.

Explain single horseshoe vortex and its problem in predicting the aerodynamic properties of a finite wing/downwash.

In: Mechanical Engineering

Water at 700 oC has a specific volume of 0.02600m3/kg. Determine the pressure of the water...

Water at 700 oC has a specific volume of 0.02600m3/kg. Determine the pressure of the water based on a) ideal gas equation, b) the generalized compressibility chart and c)the steam tables. (d) Determine the error involved in cases (a) & (b).

In: Mechanical Engineering

A shaft carries four masses A, B, C and D placed in parallel planes perpendicular to...

A shaft carries four masses A, B, C and D placed in parallel planes perpendicular to the shaft axis and in this order along the shaft. The masses B and C are 40 Kg and 28 Kg and both are at 160 mm radius. While the masses in planes A and D are at 200 mm radius. Angle between B & C is 100°, B & A is 190° and both the angles being measured in the anticlockwise (mass B is horizontal). Planes A and B are 250 mm apart, B and C are 500 mm apart. If the shaft is to be in complete balance, Using graphical method determine (i) Masses in planes A and D (ii) Distance between planes C and D (iii) Angular position of mass D.

In: Mechanical Engineering

Stabilization and landing braking during landing and takeoff, located on aircraft wings the so-called flap and...

Stabilization and landing braking during landing and takeoff, located on aircraft wings
the so-called flap and spoiler, composite, aluminum alloys, etc.
It is produced from materials.
Two different aircraft firms, precipitation hardening on the same aluminum alloy material
They wanted to produce these parts by applying (aging) heat treatment. Heat treatment
As a result of mechanical tests on applied parts, mechanical parts of a firm
strength was found to be lower than that of the other firm. made
In the examinations, in the aging heat treatment of this problem, some companies
since they take the size (s) of their parameters different from each other
It was determined that it originated due to (their choice).
a) The parts produced by the two companies have different mechanical strength, aging thermal
What parameters might have affected the process? (10 points)
b) Materials science, which causes this difference in mechanical properties.
(Microstructure formations, etc.) in terms of evaluation and explain. (20 points)

In: Mechanical Engineering

Saturated vapor steam enters a well-insulated turbine at 300oC. The mass flow rate is 1.00 kg/s...

Saturated vapor steam enters a well-insulated turbine at 300oC. The mass flow rate is 1.00 kg/s and the exit pressure is 50 kPa. Determine the final state of the steam if the turbine power output is 400 kW.

a). What is the amount of heat transfer in or out the turbine ?

b). Explain or show your calculation for your answer in a).   

c). What is the substance that you use to look for pure substance properties ?

d). What is the equation of conservation of energy for solving this problem? Indicate each symbol in your equation.

e). Find the enthalpy of saturated vapor steam at 300 °C. Explain how you find the enthalpy, such as the database you use, the steps leads to the answer.

f). Find the enthalpy of saturated liquid, Hf, and enthalpy of saturated vapor, Hg, at 50 kPa.

g). The given work output is 400 kW. Is this a positive or negative value in your equation of conservation of energy? Explain your answer.

h). Determine the final state of the steam, show your work step by step for credits

In: Mechanical Engineering

3. ÿ+ 6ẏ + 5y = r̈+ 9r (a) Find the system’s transfer function (b) Plot...

3. ÿ+ 6ẏ + 5y = r̈+ 9r

(a) Find the system’s transfer function (b) Plot poles and zeros on the s-plane (c) Provide the system’s time response from the poles of the transfer function (d) Is the system stable? Why or why not? (e) What type of system is it? (undamped, over damped, critically damped, underdamped, etc.?)

In: Mechanical Engineering

Instructions: Type your answer using the Micro soft word, Line spacing should be 1.5 space line...

Instructions: Type your answer using the Micro soft word, Line spacing should be 1.5 space line text. If you wish to sketch then, the sketch should be done with Micro soft word tools.
If not use sharp pointed dark pencil draw it on the paper scan and attach in the word file at the suitable position.
For 3 marks question you should answer at least one complete page of word document.
For 4 marks question you should answer at
least one and half e pages of word document. For 5 marks question you should answer at least two pages of word document.
This assignment has 4 parts each part carries different Marks. Maximum marks is 50 Marks.



11. Digester in the biogas plant most important part. Explain about low-cost polyethylene tube digester biogas plants and how methane is formed.
3 Marks
12. Write about the different types of biofuel and explain the difference between
trans esterification and fermentation?
Page 4 of 5
13. List the sources of bio mass. With your thinking mention the innovative methods we can adopt to transport this bio waste to the place of Bio gas plant.
3 Marks

14. Explain the gasification process solid bio fuels. What are the useful gases we will get from the gasification process? The end product produced from the gasification process can it be used to run commercial vehicles?
3 Marks

In: Mechanical Engineering

During a compression process, 35 (kg/min) of R-134a at 0.6 (bar) and 0 (°C) is continuously...

During a compression process, 35 (kg/min) of R-134a at 0.6 (bar) and 0 (°C) is continuously sent through a pipe system with an internal diameter of 3 (in.). The discharge pressure is 0.5 (MPa) and 30 (°C). The inside diameter of the tube is 1 (in.). During the process, heat is transmitted at a rate of 9 (kJ/s). Calculate the power produced by the compressor, consider g = 9.81 (m/s^2 ).

In: Mechanical Engineering