The spindle speed for T2 is given. Describe in detail a way that the spindle speed could be calculated with only the dynamometer data, basic information about the tools and analysis methods.
In: Mechanical Engineering
Explain in detail a method of using data from a force dynamometer as an unmanned automated monitoring system for a turning process.
In: Mechanical Engineering
Section-I: Technical terms to research and present your reflections in no more than 10 lines along with a figure/table with proper description, when necessary. Highlight key meaningful term(s) in the write up. (directly copying verbatim answers from the book will carry NO points)
1- Strain hardening and annealing
2- Casting processes for manufacturing components
3- Solid solution and application
Text Book- The Science and Engineering of Materials, Askeland et al. (seven edition)
In: Mechanical Engineering
Outline the three typical grain structures that develop in cast components. Explain how a fine grain size may be promoted in casting.
In: Mechanical Engineering
How an engineer with the proficiency in Engineering Economics shall handle the situation of which the defender and challenger could co-exist in an engineering related environment ?
Explain and elaborate with full details.
In: Mechanical Engineering
Air enters the compressor of an ideal Brayton refrigeration cycle at 140 kPa, 270K and is compressed to 420 kPa. At the turbine inlet, the temperature is 320K and the volumetric flow rate is 0.4 m3/s. Determine (i) the mass flow rate, in kg/s; (ii) the net power input, in kW; (iii) the refrigerating capacity, in kW; and (iv) the coefficient of performance.
In: Mechanical Engineering
An ideal cold air-standard Otto cycle has a compression ratio of 9.2. At the end of the expansion process, the pressure is 110 psi, the temperature is 1020 °R and the specific volume is 3.435 ft3/lbm. The heat rejection from the cycle is 92 BTU/lbm of air. Evaluate specific heat at 100 °F and calculate the following by hand: What is the mean effective pressure (psi)? The correct answer is 231.8 psi. Show every step and calculation with units necessary.to find the answer.
In: Mechanical Engineering
How does ozone is used to clean fruits and vegetables?
How does ultrasonic works in cleaning fruits and vegetables?
In: Mechanical Engineering
exothermic methods to create a closed system using an immersion heat coil...for 5,000 gallon tank....no judgement all methods or ideas welcome
In: Mechanical Engineering
An adiabatic piston-cylinder device with no leaks executes expansion work during which 2 kg of saturated liquid water at atmospheric pressure (101.325 kPa) is completely turned into saturated steam. What is the entropy generated for this process? (Use proper units)
*Please write clearly and directly note any references to property tables!*
In: Mechanical Engineering
low carbon steel having a tensile strength of 350 MPa and shear strength of 250 MPa is cut in a turning operation with a cutting speed of 200 m/min. The feed is 0.3 mm/rev and the depth of cut is 4.8 mm. The rake angle of the tool is 12 degrees in the direction of chip flow. The resulting chip ratio is 0.8. Using the orthogonal model as an approximation of turning determine...
a.The shear plane angle.
b. Shear force
c. Cutting force
d. Friction force
e. Normal force to shear and coefficient of friction.
f. Cutting power and cutting horsepower.
In: Mechanical Engineering
Saturated water vapor at 300°F enters a compressor operating at
steady state with a mass flow rate of 5 lb/s and is compressed
adiabatically to 650 lbf/in.2
If the power input is 2150 hp, determine for the compressor:
(a) the percent isentropic compressor efficiency and
(b) the rate of entropy production, in hp/°R.
Ignore kinetic and potential energy effects.
In: Mechanical Engineering
a. Consider a parabolic cam profile consisting of a rise-dwell-return-dwell cycle where the rise-cycle to full lift (L= 0.33 in) occurs over a 60° segment of shaft rotation. The shaft is turning at a constant speed of 100rpm. What is the velocity, acceleration and jerk of the follower at the mid-point of the rise-cycle?
b. If the profile was now changed to a simple harmonic profile, what is the velocity, acceleration and jerk of the follower at the mid-point of the rise-cycle?
c. If the profile was now changed to a cycloidal profile, what is the velocity, acceleration and jerk of the follower at the mid-point of the rise-cycle?
In: Mechanical Engineering
8–7 For the screw clamp shown, a force is applied at the end of
the handle 3.5
in from the screw
centerline. The 3/8
in diameter handle is made of cold-drawn AISI 1006 steel. The screw
is
3/4
in-10 UNC and is 8 in long, overall. The maximum possible length of
screw in the clamping
region is 6 in.
(a) What screw torque will cause the handle to bend
permanently?
(b) What clamping force will the answer to part (a) cause if the
collar friction is neglected and
if the thread friction is 0.15?
(c) What clamping force will cause the screw to buckle?
(d) Are there any other stresses or possible failures to be
checked?
In: Mechanical Engineering
Consider a residential heat pump that uses lake water as the heat source in the winter and as heat sink inthe summer. The house is to maintained at a winter temperature of T= 18 degrees C and a summer temperature of T= 25 degrees C. To do this efficiently, it is found that the indoor coil should be at T= 50 degrees C in the winter and T= 5 degrees C in the summer. The outdoor coil temperature can be assumed to be T= 5 degrees C during the winter months and T= 35 degrees C during the summer. Using R-134a as the working fluid.
For the winter months,
(a) The coefficient of performance for a Carnot heat pump cycle operating at the given temperatures.
(b) Determine the temperature and pressures at the principal states of the cycle.
(c) The power input to the compressor, in kJ/kg.
(d) The thermal efficiency (coefficient of performance)
In: Mechanical Engineering