Give two practical examples for following concepts/principles. Also write where these are used with brief explanation: (a) Centroid (b) Moment of inertia (c) General plane motion (d) Work energy principle (e) Impulsemomentum principle
In: Mechanical Engineering
Force (N) 
time (s) 
Elongation (t*0.05 mm/s) 
Engineering stress(Mpa) 
Engineering Strain 

0 
0 
0 
0 
0 

1500 
5 
0.25 
53.05978069 
0.00625 

5000 
10 
0.5 
176.8659356 
0.0125 

9250 
20 
1 
327.2019809 
0.025 

11250 
25 
1.25 
397.9483551 
0.03125 

11750 
30 
1.5 
415.6349487 
0.0375 

11500 
32.5 
1.625 
406.7916519 
0.040625 

12000 
35 
1.75 
424.4782455 
0.04375 

14250 
50 
2.5 
504.0679165 
0.0625 

15250 
60 
3 
539.4411036 
0.075 

16000 
70 
3.5 
565.970994 
0.0875 

16750 
85 
4.25 
592.5008843 
0.10625 

17250 
100 
5 
610.1874779 
0.125 

17500 
132.5 
6.625 
619.0307747 
0.165625 

17250 
170 
8.5 
610.1874779 
0.2125 

17000 
180 
9 
601.3441811 
0.225 

16500 
190 
9.5 
583.6575875 
0.2375 

16250 
195 
9.75 
574.8142908 
0.24375 

16000 
200 
10 
565.970994 
0.25 

15000 
210 
10.5 
530.5978069 
0.2625 

13250 
220 
11 
468.6947294 
0.275 

12697.1 
222.5 
11.125 
449.1368942 
0.278125 

Initial Length (mm) 
Initial Diameter(mm) 
Area = pi*r^2 

40 
6 
28.27 

Maximum load capacity: 50,000 N Test rate: 3 mm/min  0.05 mm/s Steel A Steel B Initial length, Lo 40 mm 40 mm Initial diameter, do 6 mm 6 mm Final length, Lf 48 mm 52 mm Final diameter, df 4.2 mm 3.1 mm
From the data given in excel file, calculate:
(b) Tensile strength, modulus of elasticity, modulus of resilience, % elongation and % reduction in area.
(c) Plot both engineering stress strain curve and true stress strain curve.
(d) Compare the tensile behaviour of steel A and B in one paragraph
In: Mechanical Engineering
For an ideal gasturbine cycle with two stages of compression and two stages of expansion, the pressure ratio across each stage of the compressor and turbine is 3. The air enters each stage of the compressor at 300 K and each stage of the turbine at 1200K. Using variable specific heats, determine the back work ratio and the thermal efficiency of the cycle, assuming
(a)no regenerator is used,
(b)a regenerator with 75% effectiveness is used.
In: Mechanical Engineering
Write a detailed understanding about the history, current trends and future research of 'Ground Support Vehicles for Guided Missile Programme' pertaining to India and also the international scenario. Include case studies.
In: Mechanical Engineering
As a person serving in the role of a safety practitioner, how
would you explain to a new worker the difference between
engineering and administrative controls and how they relate to a
specific work environment? Be specific in your response, and
include examples of your work environment.

In: Mechanical Engineering
A singlecylinder, four stroke research engine operates on Otto
cycle. The specification
of the engine is shown as below:
Displacement volume of the cylinder = 540 cm3
Clearance volume of the cylinder = 60 cm3
Minimum temperature = 200°C
Minimum pressure = 200 kPa
Net work output = 1000 kJ/kg
Sketch the process on a PV diagram and by using constant specific
heat at room
temperature, determine:
i) the temperature and pressure at each process,
ii) the thermal efficiency of the engine, and
iii) the Mean Effective Pressure (MEP).
In: Mechanical Engineering
An Otto Cycle engine operation at coldair standard has a volume of 0.1908 at the beginning of isentropic compression. If the compression ratio is 12.5, how much heat is released from the fuel per kg of fuel burned if the fuel consumption is 0.02 kg/min? The mean effective pressure is 350kPa.
In: Mechanical Engineering
heat transfer question, show equations, assumptions, calculations and steps clearly. will give thumbs up rating if solved correctly in 30 minutes
Define thermal diffusivity (α) and give its mathematical expression.
In: Mechanical Engineering
In: Mechanical Engineering
Please describe in detail your knowledge of electrical engineering?
Please describe in detail your knowledge of mechanical engineering?
Please describe in detail your knowledge of computer software?
What does customer service mean to you?
What interests you most about this position?
What are your career goals?
Why are you looking for another job?
What is your business travel tolerance?
What has been your business travel levels in your past opportunities?
In: Mechanical Engineering
Steam enters an adiabaticnozzle operating at steady state at 20 bar, 320°C, with a velocity of 100 m/s. The exit pressure and temperature are 7 bar and 200°C, respectively. The mass flow rate is 5 kg/s. Neglecting potential energychanges, determine:
a.the exit velocity, in m/s.
b.the exit flow area, in cm2
In: Mechanical Engineering
In the twotube heat exchanger with the same axis used as engine oil cooler, cold water enters the steel pipe with inner/outer diameter of 25/30 mm (K= 55 W/mK) entering with at 15°C temperature, 0.5 m/s speed and comes out at 25°C temperature. Hot oil enters the steel pipe with inner/outer diameter of 40/46 mm with a speed of 0.25 m/s at 60°C temperature. According to the oil is required to be cooled at 5°C;
A) Find the pipe length for parallel flow?
B) Find the pipe length for reverse flow. Examine the results.
C) Calculate the pressure loss of the oil and the required pump power in reverse flow.
In: Mechanical Engineering
1. What is mesh convergence and how is it achieved in FEA in the absence of a known exact solution?
2. What are the four main sources of error in finite element model in order of least important to most important?
In: Mechanical Engineering
What is the more beneficial in resisting torsion the solid section or the hollow section? State why?
Please Solve As soon as
Solve quickly I get you thumbs up directly
Thank's
AbdulRahim Taysir
In: Mechanical Engineering
Two plates of thicknesses 25mm and 15mm are clamped together by an M8x1.25 bolt used with a regular nut and with regular washers placed on both the nut and bolt head sides. The top plate is 25mm thick with E=70 GPa and the bottom plate is 15mm thick with E=90 GPa Determine the fraction of external load borne by the bolts. The bolt, nut and washer are made up of steel (E=207 GPa). Note: Round up the bolt length to the nearest 5mm
In: Mechanical Engineering