ABS - Tyres size exchange and how it affects ABC
In: Mechanical Engineering
A U-tube manometer employs a special oil having a specific gravity of 0.2 for the manometer fluid. One side of the manometer is open to local atmospheric pressure of 24.3 inHg and the difference in column heights is measured as 10 cm±1.0 mm when exposed to an air source at 35◦C. Standard acceleration of gravity is present. Calculate the pressure of the air source in pascals and its uncertainty.
1. (a)Plot the Voltage vs. Displacement graph of LVDT Transducer by moving the core in steps of 0.1mm in both Left and Right directions. (b)Calculate the Sensitivity of LVDT Transducer from the above graph. (c) What is the relationship between input voltage and output voltage of Transformer, given N1, N2 are number of turns in the primary and secondary coils respectively?
In: Mechanical Engineering
Tensile testing
can someone tell me how to calcualte the true strain, engineering strain, true stress and engineering stress of the following data o got from tensile testing machine. I assumed area to be constant during the test
i need to draw the curves of the true and engineeing in excel please
TESTNUM | POINTNUM | TIME | POSIT | FORCE | EXT | Area |
5368 | 1 | 0.156 | -5E-05 | 347.6111 | -0.00138 | 0.0628 |
5368 | 2 | 0.58 | -5E-05 | 348.3641 | 0 | 0.0628 |
5368 | 3 | 0.777 | 0.0007 | 363.0201 | 0.021787 | 0.0628 |
5368 | 4 | 0.875 | 0.001375 | 398.4846 | 0.041394 | 0.0628 |
5368 | 5 | 0.975 | 0.002025 | 438.6508 | 0.060276 | 0.0628 |
5368 | 6 | 1.086 | 0.002675 | 477.715 | 0.079158 | 0.0628 |
5368 | 7 | 1.175 | 0.00335 | 515.8242 | 0.098766 | 0.0628 |
5368 | 8 | 1.276 | 0.004 | 552.9417 | 0.117647 | 0.0628 |
5368 | 9 | 1.374 | 0.00465 | 590.1509 | 0.136529 | 0.0628 |
5368 | 10 | 1.483 | 0.0053 | 625.4869 | 0.155411 | 0.0628 |
5368 | 11 | 1.579 | 0.00595 | 659.7577 | 0.174292 | 0.0628 |
5368 | 12 | 1.678 | 0.006575 | 693.257 | 0.192448 | 0.0628 |
In: Mechanical Engineering
Tensile testing
can someone tell me how to calcualte the true strain, engineering strain, true stress and engineering stress of the following data o got from tensile testing machine. I assumed area to be constant during the test
i need to draw the curves of the true and engineeing in excel please
TESTNUM | POINTNUM | TIME | POSIT | FORCE | EXT | Area |
5368 | 1 | 0.156 | -5E-05 | 347.6111 | -0.00138 | 0.0628 |
5368 | 2 | 0.58 | -5E-05 | 348.3641 | 0 | 0.0628 |
5368 | 3 | 0.777 | 0.0007 | 363.0201 | 0.021787 | 0.0628 |
5368 | 4 | 0.875 | 0.001375 | 398.4846 | 0.041394 | 0.0628 |
5368 | 5 | 0.975 | 0.002025 | 438.6508 | 0.060276 | 0.0628 |
5368 | 6 | 1.086 | 0.002675 | 477.715 | 0.079158 | 0.0628 |
5368 | 7 | 1.175 | 0.00335 | 515.8242 | 0.098766 | 0.0628 |
5368 | 8 | 1.276 | 0.004 | 552.9417 | 0.117647 | 0.0628 |
5368 | 9 | 1.374 | 0.00465 | 590.1509 | 0.136529 | 0.0628 |
5368 | 10 | 1.483 | 0.0053 | 625.4869 | 0.155411 | 0.0628 |
5368 | 11 | 1.579 | 0.00595 | 659.7577 | 0.174292 | 0.0628 |
5368 | 12 | 1.678 | 0.006575 | 693.257 | 0.192448 | 0.0628 |
In: Mechanical Engineering
Discuss in detail about the advantages/disadvantages of compressors in refrigeration systems. Give practical examples of compressors in vapor and/or absorption refrigeration system.
Please write down references if any.
In: Mechanical Engineering
a- Do you consider hardness an important mechanical property? why? (specify few examples).
b- Comprare and distinguish between the Vickers, Brinell, and Rockwell tets.
c- which of the following have the highest hardness and why?
Brass, Mild steel, Aluminum
d-What is the purpose of microscope used in Brinell hardness test?
In: Mechanical Engineering
Explain the ggeometrically necessary dislocation(GND) in comparison with statistically stored dislocation(SSD)
In: Mechanical Engineering
A 3/4" diameter hole is to be drilled through 3/4" thick piece of steel plate. The twist drill is to be fed at 0.025 ipr. Maximum cutting speed of 70 fpm is recommended.
Calculate:
A) Cutting time
B) Metal Removal Rate (MRR)
In: Mechanical Engineering
0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and transfers energy to the air at a constant rate of 1 kW for 100s. The temperature of the air increases to 600 K.
(a) What is the final pressure of the air (kPa)
(b)Calculate the heat transfer (kJ) for the process (use a constant, average specific heat)
In: Mechanical Engineering
0.1 kg of air (ideal gas) is contained in a closed, rigid tank of volume 0.04 m^3 at 500 K. A paddle wheel stirs the air and transfers energy to the air at a constant rate of 1 kW for 100s. The temperature of the air increases to 600 K.
(a) What is the final pressure of the air (kPa)
(b)Calculate the heat transfer (kJ) for the process (use a constant, average specific heat)
In: Mechanical Engineering
How to calculate the stiffness of an irregular shaped steel frame ? Include all equations and information needed.
In: Mechanical Engineering
Prove: under the same compression ratio, the thermal efficiency of the Otto cycle is greater than the thermal efficiency of the Diesel cycle?
In: Mechanical Engineering
Helium at 200 kPa, 227 C is expanded in steady flow through a nozzle to 100 kPa. At these operating conditions the nozzle efficiency is 76%.
a) Making the usual nozzle assumptions, calculate the actual velocity at the nozzle exit. Start with the appropriate form of the first law.
b) Calculate the actual nozzle exit temperature.
In: Mechanical Engineering
Superheated steam at 8 MPa and 480°C leaves the steam generator
of a vapor power plant. Heat transfer and frictional effects in the
line connecting the steam generator and the turbine reduce the
pressure and temperature at the turbine inlet to 7.7 MPa and 440°C,
respectively. The pressure at the exit of the turbine is 10 kPa,
and the turbine operates adiabatically. Liquid leaves the condenser
at 8 kPa, 36°C. The pressure is increased to 8.6 MPa across the
pump. The turbine and pump isentropic efficiencies are 88%. The
mass flow rate of steam is 79.53 kg/s. Determine
(a) the net power output, in kW.
(b) the thermal efficiency.
(c) the rate of heat transfer from the line
connecting the steam generator and the turbine, in kW.
(d) the mass flow rate of condenser cooling water,
in kg/s, if the cooling water enters at 15°C and exits at 35°C with
negligible pressure change.
book used is fundimentails of thermodynamics
In: Mechanical Engineering
OCCUPATION : Production AND industrial
WHAT ARE THE RESPONSIBILITIES WILL BE IN THE JOB?
WHAT IS MY ANNUAL INCOME WILL BE?
WHAT I HAVE TO DO TO ACCOMPLISHED FINANCIALLY?
.
WHAT I HAVE TO DO TO BROADEN MY MENTAL HORIZONS?
DESCRIBE, IN DETAIL, what should my SYSTEMATIC EDUCATIONAL PLAN FOR ACHIEVING
what
the10 YEAR PROJECTED GOALS (particularly as it relates to items 5
and 6)
In: Mechanical Engineering