find the info about how make the robot to pick many load at once.
In: Mechanical Engineering
1. State the concept of Method-time Measurement (MTM) system. How it is developed (R)?
2. Explain the concept of MOST (Maynard Operation Sequence Technique) work measurement technique. Or What are the basic advantages of using MOST?
3. Some companies are experiencing a tendency for their work measurement analysis to become more liberal in their performance rating evaluation over the years. How do fundamental motion data offset the tendency towards creating loose standards?
4. What are the fundamental motion and symbols used in Methods-Time Measurements (MTM)?
5. In the MTM system, explain the factors that influence the reach and move times.
In: Mechanical Engineering
Describe a situation where a professional engineer would require the need of a code of ethics. How does applying this code develop and reinforce public trust?
In: Mechanical Engineering
11- A standard V belt is used to connect two sheaves with pitch diameters of 8,4 in. and 27.7 in. with a center distance of no more than 60.0 in.
a-Specify an acceptable belt.
b-If the small sheave is rotating at 1160 rpm, compute the linear speed of the belt.
c-Determine the contact angle for each sheave if this is an open belt drive.
d-Find the rated horsepower.
e-What is the actual center distance?
In: Mechanical Engineering
A car and the suspension system are a damped spring, mass system, with a natural frequency 2 Hz and a damping coefficient 0.2. The car drives at speed V over a road with sinusoidal roughness. The roughness wavelength is 20 m, with a amplitude of 50 cm. What speed does the maximum amplitude of vibration occur? What is the corresponding vibration amplitude?
Please do not use an older solution.
In: Mechanical Engineering
) A wet multiple-disc clutch with sintered linings is required to transmit 120 Nm of torque at 1000 rev/min. The axial force is created when 6 helical compression springs deflect 5 mm. Each spring has a spring constant k = 142 N/mm. Assuming uniform wear, determine :- (i) the outside and inside diameters if ri = 0.577 ro . (ii) the number of discs required. (iii) the maximum power that can be transmitted
In: Mechanical Engineering
Compare the ranges of applications of thermistors,
thermocouples, and cold wires.
Give examples of temperature measurements for which each of the
three methods would be suitable, but the other two would not.
please, computer typing
In: Mechanical Engineering
For H2O, determine the specific volume at the indicated state, in m3/kg. (a) T = 400°C, p = 20 MPa. (b) T = 120°C, p = 20 MPa. (c) T = 40°C, p = 2 MPa.
I have figured out how to do A, but can't get the correct answer for B or C. All the examples I am finding are with numbers that are listed already on the charts, and mine are not so I need to approach the problem from a different angle. I tried interpolating between two points on the Properties of Compressed Liquid Water and got v=1.05 but this is not the correct answer. I'm fairly confident that my interpolation is right and had a friend double check it for me, so I must be approaching the problem wrong in some other way.
Please do not post the solution using different numbers. I have had issues in the past with someone copy and pasting the solution from another, easier, number set and essentially wasting one of my questions. I always look at similar questions that have been posted before posting my own and know that they are not helping me with this particular problem. I only get 20 a month so I have to make them count! Thanks in advance :)
In: Mechanical Engineering
An axial flow fan has a hub diameter of 1.50 m and a tip diameter of 2.0 m. It rotates at 18 rad/s and when handling 5.0?^(3)s^(-1) of air, develops a theoretical head equivalent to 17mm of water. Determine the blade outlet and inlet angles at the hub and the tip. Assume that the velocity of flow is independent of radius and that the energy transfer per unit length of blade is constant. Assume density of air is1.2 kg/m^3
In: Mechanical Engineering
Please explain the step by step concept of XPS ,auger and chemical shift in the graph as simply as possible.
In: Mechanical Engineering
Given a point P = (2, 1, 2) and using the homogenous representation:
Calculate the coordinates of the transformed point P* if P is rotated about the X, Y, and Z axes by angles 60°, 30°, and 60° respectively.
If the point P* obtained in part (a) is to be rotated back to its original position, find the corresponding rotation matrix. Verify your answer.
Calculate P* if P is translated by d = 2i – 3j + k and then scaled uniformly by s=3.0.
In: Mechanical Engineering
0.5 kg of a gas at temperature t1=20?C and pressure p1=0.1 MPa was contained in a cylinder with a piston. The gas was compressed (polytropic process) and a ratio of heat exchanged during the process to the work of compression was ¼. Find the final temperature and pressure of the gas if 15 KJ of heat was transferred to the surroundings. Specific heats at constant volume and pressure were 654.67 J/Kg/K and 897.64 J/kg/K, respectively.
In: Mechanical Engineering
The Tools Company uses a lathe to machine an aluminum block. The operation time is 5 minutes. On average, the lathe requires maintenance after 200 parts. The average maintenance time is about 2 hours. (For the purpose of these calculations, maintenance is the same as failure.
A.) What is the production rate of the machine in parts per minute? (Round to 3 decimal places)
B.) Continuing from Part 1, the next operation after turning (lathe operation), is a milling operation. The operation time at the milling machine is 4 minutes. Its mean time to fail is 30 hours and its mean time to repair is 5 hours. Any amount of parts can be stored in between the lathe and the mill. At what rate material on average will accumulate in the storage area in terms of parts per minute? (Round to 3 decimal places)
C).Continuing from Part 2. What is the production rate of this two-machine line in terms of parts per minute? (Round to 3 decimal places)
D.) Continuing from Part 3. Now a third and final operation is added to the line. This is a manual polishing operation that removes the burrs generated from the machining processes. The operation time is 10 minutes, and the worker takes a break on average every 18 parts. The breaks typically last 15 minutes on average. What is the production rate of this line assuming the buffers in between the machines are infinite in parts per minute (Round to 3 decimal places)?
E) What is the rate of material accumulation in the line in parts per minute? (Round to 3 decimal places)
In: Mechanical Engineering
Refrigerant 134a enters the evaporator of a refrigeration system operating at steady state at -4oC and a quality of 20% at a velocity of 6 m/s. At the exit, the refrigerant is a saturated vapor at -4oC. The evaporator flow channel has constant diameter of 1.7 cm. Determine the mass flow rate of the refrigerant, in kg/s, and the velocity at the exit, in m/s.
In: Mechanical Engineering
A hot dog can be considered to be a 12 centimeter long cylinder, whose diameter is 2 cm and whose properties are ? = 980 kg/m3 , cp = 3.9 kJ/kg · K, k = 1.2 W/m · K, and ? = 2 × 10?7 m2 /s. A hot dog initially at 5?C is dropped into boiling water at 100?C. The heat transfer coefficient at the surface of the hot dog is estimated to be 600 W/m2 · K and the hot dog can be considered cooked when its center temperature reaches 80?C (a) Determine how long it will take to cook considering the hot dog as a long cylinder. (b) Determine the cooking time assuming lumped capacitance.
In: Mechanical Engineering