1.Determine following conversation
(1) Define 'Decibel (dB)'
(2) Define 'time constant'
(3) Define 'Hall effect' and Writes it's principle and representative Use
(4) Defne 'SI(International Systems of Units)'
(5) Characteristic of 'Operational Amplifier' (more than 3)
(6) Define 'Feedback Control'
(7) Explain Advantages of 'Microprocessor Controler' and representative Use
(8) Define 'Cracking Pressure'
(9) Define 'Cavitation' and its Effect
(10) Definie 'Servo Valve' and Writes it's principle and representative Use

A.

The process most widely used to make fully-dense parts in metal or polymer is…?

Group of answer choices

a. Powder Bed Fusion - liquid phase sintering

b. Electron-beam melting

c. Sheet Lamination

d. Powder Bed Fusion - melting

B.

The most widely used “drop on demand” AM method…

Group of answer choices

a. uses thermal energy to generate pressure which produces droplets

b. uses pressure injectors to generate pressure which produces droplets

c. uses centrifugal force to generate pressure which produces droplets

d. uses piezoelectricity to generate pressure which produces droplets

C.

A "star-weave" scan pattern is used to:

Group of answer choices

a. Increase layer adhesion

b. Minimize the amount of uncured resin

c. Reduce the amount of part distortion

d. All of the above

What is easier: Homogeneous or heterogeneous nucleation? Why?

What does an Isothermal Transformation (IT) Diagram tell us?

How do nucleation rates and diffusion rates influence the shape of the IT Diagram?

What do the letters "A", "F", "P", "B", and "M" mean on these diagrams?

What are the similarities and differences between the following microstructures: Coarse Pearlite; Fine Pearlite; Bainite; Spheroidite; and Tempered Martensite?

How is Martensite (not the tempered kind) formed, and how is it completely different from the other microstructures listed above?

What is the ONLY phase that can transform to into Pearlite, Bainite, or Martensite?

Can you make Tempered Martensite using a single heat treatment, or do you need to use multiple heat treatments?

1.Discuss the possible sources of errors (at least two) in Brinell hardness measurements.

2.why is it necessary to maintain P / D2 ratio of 30 for ferrous materials and 10 for non-ferrous materials is Brinell hardness test?

explain with sketches the different types of cams and followers

explain and elaborate the various types of gear trains

Explain the velocity ratio of epicyclic gear trains is obtained by tabular method

What goes in the Polynomial box and the LTI box in the simulink model?

A pair of gears with 25?, full-depth, involute teeth transmits 125 hp while the pinion rotates at 2500 rpm. The diametral pitch is 4, and the quality number is A9. The pinion has 32 teeth and the gear has 76 teeth. The face width is 1.5 in. The input power is from a multicylinder gasoline engine, and the drive is for a low speed water pump. The drive is a commercial enclosed gear unit. Specify suitable materials for the pinion and the gear. Assume a safety factor of SF=1.25, reliability of 0.90 and a design life of 8000 h. After that, determine the power-transmitting capacity for the pair of gears.

IE 672 Research Project

You will be required to research a topic relevant to industrial quality control and summarize this research in a brief report and a presentation to the rest of the class. The following is a sample list of topics:

            Multivariate SPC

            Process Monitoring and Feedback Adjustment

Wald Sequential Sampling (SPRT Method)

Failure Modes Effects Analysis

Fault Tree Analysis

Taguchi Methods

Robust Parameter Design

Continuous Sampling Plans

SPC with correlated data

HACCP (hazard analysis and critical control points)

Process Validation

Quality Function Deployment

Design Controls

In addition to this list you are free to choose a topic on your own. You can get ideas for your topic by reviewing the bibliography at the end of your book.

IMPORTANT:

You are expected to deliver the following:

1. A brief paper clearly explaining the topic that you chose

2. Approximately 3-6 pages

3. An example of an application if possible

4. Simulating data is acceptable

5. A short presentation for a class discussion

Approximately 5-10 slides

Please note that your project is intended to benefit the entire class. So you are expected to provide a presentation to the class; you are also expected to review the presentations of your peers and participate by asking questions.

PLEASE ANSWER THIS QUESTION WITH 3-6 PAGES AND 5-10 PPT SLIDES.

THANK YOU.

Several geothermal power plants are in operation in the united states and more are being built since the heat source of a geothermal plant is hot geothermal water which is “free energy.” An 8-MW geothermal power plant is being considered at a location where geothermal water 160 degrees C is available. Geothermal water is to serve as the heat source for a closed Rankine power cycle with refringent 134a as the working fluid. Specify suitable temperature and pressures for the cycle, and determine the thermal efficiency of the cycle. Justify your selection.

A normal shock wave propagates through stagnant air at 300K and 100kPa with a Mach number of 1.2. What is the post shock flow velocity in the lab frame of reference and the post shock pressure, and temperature? If a shock wave propagated through helium with the same pressure ratio as the air shock wave, what would its Mach number be?

(a) Show that for logarithmic oxidation, the rate of oxide growth dy/dt is inversely proportional to the time for large reaction times. (b) Then show that the oxidation rate approaches 0 for a large reaction time.

An ideal turbofan operates at 11,000m with a free-stream Mach number of 0.85. Considering the following design inputs:

Bypass ratio:?= 8

Fan pressure ratio:?F= 1.6

Compressor pressure ratio:?c= 25

Fuel heating energy:hPR= 43,500kJ/kg

Total temperature downstream of the combustor:Tt4= 1420K

a)Calculate all the points and plot the thermodynamic cycle of the core flow on a T-sdiagram.

b)Calculate specific thrust, specific fuel consumption, thermal efficiency, propulsive efficiency and overall efficiency.

c)Compare the performance parameters in part b)with those of an ideal turbojet with the same ?c, Tt4 and hPR.