Consider a 2nd order system with m=30kg, k = 5000N/m, c = 387N-s/m. Generate the BODE plot using MATLAB or Excel to find the maxima. If you do not have Excel, you can use google sheets. For MATLAB users these functions may be useful: (logspace, loglog)

If TIG, MIG and arc welding are in consideration, which one is more suitable for robotic (automatic) welding? Why?

what would be the real life example of an elasticity please explain??

• Maintenance Management, Practices, Computerized Systems and future advancements.

please could you provide me with full description about each aspect.

Q2. A shaft carries four masses A, B, C and D of different magnitude and revolving at radii as mentioned below in planes measured from A at 300 mm, 400 mm and 700 mm. The angles between the cranks measured anticlockwise are A to B 450B to C 700 and C to D 1200 . The balancing masses are to be placed in planes X and Y. The distance between the planes A and X is 100 mm, between X and Y is 400 mm. If the balancing masses revolve at a radius of 250 mm, find their magnitudes and angular positions graphically.

i. The magnitude of mass X and Y

ii. The angular position of mass X and Y.

iii. Draw Space diagram.

iv. Couple Polygon

v. Force Polygon

vi. Tabular Column

Given :

Your newly purchased house where you are aiming for an indoor temperature of 18.0°C is well insulated apart from a 5.0 cm thick 12m² wooden wall facing the garage. Typically, the garage maintains a temperature of at least 9.0°C even in winter. What power do you lose because of the wall? One winter evening, the garage door gets stuck in the upright position and you want to know what the indoor temperature will be when the coldest night is -15.0 ° C in the garage. You can heat the room with a 400 W power element.

Describe how to cut a thread on a lathe, using freehand sketch. What is the relative motion between the tool and the work part.

The ethanol-water mixture is separated on a distillation column. Feed contains 20% ethanol
and 1000 kmol / hour speed is entering the system. The feed temperature is 30ºC and its enthalpy is 15kcal / kg.
Saturated feed steam enthalpy 485 kcal / kg and saturated feed liquid enthalpy
70kcal / kg. Distillate has at least 80% ethanol and 2% ethanol concentration of the sub-product
is required to be. The feedback / distillate ratio is 5/3. System pressure is 1 atm.
There is a co-molar flow acceptance in the enrichment zone. Theoretical number of stages and feeding
Find the stage (counting from above) into the system.

How does turbulent intensity change according to 4 stroke engine’s cycle? What are some bulk motion you can do to increase the turbulent intensity?

2. Based on initial guesses, a mesh for a CFD simulation is set up for an external ow around an object. The
ow does not experience signicant separation on the body surface. The results yield y+ values between 4
and 40 on the the body surface. Explain why this result is not adequate. Explain how you would proceed to
improve the results, and how you would know when they are acceptable.

Describe in simple terms how an XRD instrument can be used to perform a residual stress analysis of a strained steel sample. What needs to be measured, and how are the measurements performed

A batch production operation has a machine setup time of 4.0 hr and a processing time of 1.50 min per cycle. Three parts are produced each cycle. No tool handling time is included in the cycle. Part handling time each cycle is 30 sec. It consists of the worker obtaining three starting work units from a parts tray, loading them into the machine, and then after processing, unloading the completed units and placing them into the same tray. Each tray holds 27 work units. When all of the starting work units have been replaced with completed units, the tray of completed parts is moved aside and a new tray of starting parts is moved into position at the machine. This irregular work element takes 4.0 min. Batch quantity is 2,700 units.

Determine

(a) average cycle time,

(b) time to complete the batch,

(c) average production rate.

An intermediate pressure steam turbine is to be designed with 7 repeating stages as described above. The inlet conditions are: total temperature = 550°, total pressure = 4.0 MN/m2. The exit total pressure is 0.5 MN/m2. The rotational speed of the turbine is to be 1500 rev/min and the power output required is 90 MW. It is estimated that the turbine efficiency will be 90%. Calculate the mass flow through the turbine, the axial velocity, mean blade speed and the mean diameter of the turbine.

Scenario 2: Hunter Molding Machine (Machine Guarding)

While operating a Hunter molding machine, it is necessary for a single operator to reach inside the machine to adjust the pattern or blow it off to ensure that it is free of particles or other debris that will create deformed parts. This function is conducted once every 75 minutes, 8.5 hours per day. The molding pattern is placed on the holder by the machine, which then automatically rotates the pattern 180 degrees before the molding sand is compressed on the pattern, and then this process is repeated to ensure a two-sided mold is created. When the molds are compressed and then separated, the operator must reach inside the machine to clean the pattern by blowing compressed air onto the mold. The foundry supervisor is concerned that there is a potential for the operator to be caught in the rotating pattern holder, causing an amputation. He has asked for your help to provide a control measure to prevent any possible injuries to the operators. Note: A physical barrier between the operator and the pattern holder is not possible or feasible due to production activities. Please see the photographs below as a reference.

A flat plate solar collector with no cover plate has a selective absorber surface of emissivity 0.1 and solar absorptivity 0.95. At a given time of day the absorber surface temperature ?? is 120℃ when the solar radiation is 750 W/m^2, the effective sky temperature is -10℃, and the ambient temperature ?∞ is 30℃. Assuming that the heat transfer convection coefficient for the calm day conditions, estimated h= 0.22 (?? −?∞) 1 3 W/m^2 K.

(a) Calculate the useful heat removal rate (W/m^2 K) from the collector for these conditions.

(b) What is the corresponding efficiency of the collector?