Derived the time response of first order system with the ramp input using Laplace transform.
In: Mechanical Engineering
Can you provide an application example to illustrate the importance of prototyping a part with different colors?
In: Mechanical Engineering
Describe some of the major challenges associated with the management of supplier organizations and
related activities.
In: Mechanical Engineering
4. For the Japanese wind lens turbine, the effect of the shroud is to reduce the downstream pressure, e.g., in the rotor wake, say by ?P. Show by modifying the Betz limit, how power production can actually be greater than the Betz limit. Your power production should be a function of a = v4/V. Assume v4 and S4 are known. Get it as close as you can. In the process, recognize that the wind speed at the rotor plane and even in the wake region are greater than the measured wind speed in free stream. Consider the stream tube below. Follow the same methodology used to derive the Betz limit.
(i). Relate all mass flows at each section to the downstream mass flow rate at section 4.
(ii). Apply conservation of mass to relate section areas to S4.
(iii). Apply conservation of linear momentum applied to and Bernouli’s equation to calculate the drag force, D, across the rotor plan.
(iv). Equate these expressions for Drag.
(v). Use conservation of energy to estimate power production as a function of a = v¬4 / V.
In: Mechanical Engineering
Matlab script that uses loops to create a multiplication table (matrix) where the user enters 'n' (nxn chart).
In: Mechanical Engineering
In: Mechanical Engineering
A multi-disc wet clutch is to transmit 120 Nm of torque at 1000 rpm using sintered friction material.
(i) Assuming uniform wear, find the outside and inside diameters required if ri = 0.577ro.
(ii) What is the power transmitted?
(iii) Using the diameters found in (i), determine the power transmitted when the clutch is new.
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For a 1DOF system, how many natural frequency (frequencies) does it have? How many vibration(s) could it possibly have?
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Select the best answer for the question. 7. Which one of the following statements about diesel engines is true? A. The temperature of the fuel in a diesel engine has an effect on the power output. B. Diesel engines deliver usable torque through a much wider rpm range than gasoline engines. C. Diesel engines run quieter than gasoline engines. D. Acceleration is faster with a diesel engine compared to a gasoline engine.
In: Mechanical Engineering
A seamless blank unstayed dished head with pressure on the concave side has a diameter of 1,016mm and is a segment of a sphere with a dish radius of 889 mm, The thickness of the dished head is 25.4mm. The maximum allowable stress value of dished- head material (carbon steel, SA- 285- A) is 88.9 MPa, which has an operating temperature of no more than 250 C. Determine the maximum allowable working pressure of the blank unstayed dished head.
In: Mechanical Engineering
The following data collected from a steam turbine of 25 MW capacity thermal power plant:
Assume R for air as 287 kJ/kg C
Steam condensed = 40000 kh/hr
Temperaure of steam in condenser =40 degree
Dryness of steam enetring condenser = 0.85
Air leakage in the condenser = 140 kg/hr
Temperature of codenser =35 degree
Temperature at the suction of air pump = 32 degree
Borometer reading = 76 cm of Hg
Maximum rise in cooling water temperature =12 degree
Find : 1. Vacuum gauge reading in condenser , 2.Capacity of dry air pump in cume meter per hour 3.Quantity of cooling water passes through condenser in tons per hour
In: Mechanical Engineering
8. Consider a potato being baked in an oven that is maintained at a constant temperature. The temperature of the potato is observed to rise by 5°C during the first minute. What will be the temperature rise during the second minute? A. Less than 5°C B. More than 5°C C. Equal to 5°C D. No temperature rise
In: Mechanical Engineering
explain the difference between a saturated and an unsaturated carbon-containing molecule.
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A single stage steam turbine is supplied with steam at 5 bars, 200 C at the rate of 50kgmin. It exhausts into a condenser at a pressure of 0.2 bars. The blade speed is 400msec. Nozzles are inclined at an angle of 20 to the plane of the wheel and outlet blade angle 30. Neglecting friction losses, the power developed by the turbine will be?
In: Mechanical Engineering
assume that the data are stored in variable names x and y. write a matlab code to plot the quadratic spline and along with the data points
x= 1 2 3 4 5 6
y= 40 78 125 256 348 425
In: Mechanical Engineering