From a surface measurement made by surface profilometer, the following point values were obtained. (The scale factor is 0.6 micrometer). There are 10 points. 516,534,518,533,518,530,520,526,521 and 526.

Try to find Ra,Rq,Rt values and Ratio Ra/Rq.

Clearly identify and explain the reason behind the key processing limits relevant to the material extrusion process - FDM (Fuse deposition modelling) that are based on:

a. Limits of the material being processed

b. Limits of the equipment being used

Answer the 2 questions below in regards to the material extrusion process , FDM (Fuse deposition modelling).

a. Detailed Explanation of how and why the following 3 variables affect the SURFACE FINISH of the product

1. Pressure/Force 2. Temperature 3. Time   

b. Detailed Explanation of how and why the following 3 variables affect the DIMENSIONAL ACCURACY of the product

1. Pressure/Force 2. Temperature 3. Time   

**you will likely need to consult online or literature sources to be able to explain the mechanisms that cause these accurately);

Air as an ideal gas enters a diffuser operating at steady state at 5 bar, 340 K with a velocity of 512 m/s. The exit velocity is 110 m/s.

For adiabatic operation with no internal irreversibilities, determine the exit temperature, in K, and the exit pressure, in bar:

(a) for k = 1.4.

(b) using data from Table A-22.

Problem 8-49 from the textbook, Mechanics of Materials by R.C. Hibbler. It is the 10th addition.  

Nitrogen (N₂) at 1 bar, 300 K enters a compressor operating at steady state and is compressed adiabatically to an exit state of 16 bar, 750 K. The N₂ is modeled as an ideal gas and kinetic and potential energy effects are negligible. Determine the work input, in kJ per kg of N₂ flowing, the rate of entropy production, in kJ/K per kg of N₂ flowing, and the isentropic compressor efficiency.

What are the 5 different type of sensory warnings for product safety?

Describe the physical structure of bonded abrasives.

identifying what is grit number, bond strength, and porosity.

Water vapor at 5 MPa, 320°C enters a turbine operating at steady state and expands to 0.1 bar. The mass flow rate is 2.52 kg/s, and the isentropic turbine efficiency is 92%. Stray heat transfer and kinetic and potential energy effects are negligible.

Determine the power developed by the turbine, in kW.

Rank the following from most isotropic to least isotropic.

Unidirectional Long Fiber

Random short

Fiber Randon long fiber (not woven)

Oriented short Fiber

i have to write a survey paper on the history of a dynamics related concept, tool, application, or mechanism. i am struggling to find good topics. please help me by suggesting some topics

Consider a machine that has a natural process time of 1 minute (deterministic) when it works but is subject to failures with MTTF=100 minutes and MTTR=10 minutes. Assume c_r=1. This machine receives parts every 1.5 minutes from the previous process (deterministic).

a. What is the availability of this machine?

b. What is the average effective process time, t_e, for this machine?

c. What is the squared coefficient of variation of the process time, c_e²?

d. How long does the average part wait in queue in front of this machine before being served?

Suppose you are observing parts come out of this machine.

e. What is the average rate with which parts depart this machine and arrive to the next machine?

f. What is the squared coefficient of variation of inter-departure times from this machine?

Explain what are the properties (that is, relating to its velocity vs temperature) of a SAE 5W/30 oil

List 5 Suitable applications of Lubricating Greases in Mechanical Engineering?

Water flowing at a rate of 0.667 kg/s (Cp = 4.192 kJ/kg. K) enters a counter current heat exchanger at 318 K and is heated by an oil stream entering at 393 K at a rate of 2.85 kg/s (Cp=1.89 kJ/kg. K). The overall U=290 W/m2. K and the area A=20 m2. Calculate the heat transfer rate and the exit water temperature.