How Die-tools are traditionally manufactured. (should cover following information and no more than 300 words for each method) Your discussion in this section should include the following information regarding.

1. how method creates die and what materials can it use

2. what are the tolerances and finish of die

3. what are the material properties/strength of the final product

4. how long does it take to produce the desired die and approx cost.

5. Advantages and disadvantages.

Moist air enters an adiabatic humidifier system at 1 atm, 15 °C, with a relative humidity of 20%. The volumetric flow rate of the incoming moist air is 150 m3/min. Saturated water vapor at 1 atm is injected into the flow such that the outlet temperature is 30 °C and the outlet relative humidity is 40%. The pressure is constant in the humidifier system. Determine the mass flow rate of the saturated water vapor entering the humidifier at state 3, in kg/min. Note: The molar mass of air is 28.97 kg/kmol and the value of the universal gas constant is R¯ = 8.314 kJ/(kmol*K)

The rotor of a kaplan turbine is 2.8m in dia. at the blade tips and 0.9m at the hub. Its speed of rotation is 110r/min. Water enters the rotor without shock, making an angle of 37° to the axial direction at the mean dia and rotor has a blade exit angle of 58° to the axial direction at the mean diameter. The available pressure head is 6.5m .Determine 1) the inlet angle of the rotor blades at the mean dia. 2) the hydraulic efficiency and 3) the maximum mechanical power developed if the mechanical efficiency is 95%. make a neat drawing showing the layout and dimensions of the turbine and draw the inlet and exit velocity diagrams reasonably to scale

A hydro power station is required to deliver 48MW of power to the national grid from a site where the available head is 16m The alternator efficiency may be taken as 96%.The proposed rotational speed of the coupled turbo-alternators is 150r/min and the specific speed of the available turbines is 400. Estimate the number 9f units required

Obtain manufacturers’ data on thermocouple and thermistor temperature sensors for measuring temperatures of hot combustion gases from a furnace. Explain the basic operating principles of each sensor and compare the advantages and disadvantages of each device. Consider sensitivity, accuracy, calibration, and cost.

For water in state 1.5 bar, 225 C, what is the specific internal energy of water (kJ/kg)?

Does the force of compaction in powder metallurgy affect final part properties? How?

A reaction turbine whose runner radii are r₁ =300 mm, r₂ = 150 mm, operates under the following conditions; Q = 2.3 m³/s, w = 25 rad/s, α1 = 26 ⁰ , α2 = 83 ⁰ , V₁ = 9.3 m/s, V₂ = 4.5m/s. for an efficiency of 93 %, find;
(i) Torque applied,
(ii) Power of fluid and
(iii) Head on turbine.

Bolt Fastener Design:

Calculate the fastener and bolt stiffness and required length for a M14x2 hex head bolt and nut used to assemble two 16mm steel plates

The design condition for a space is 77 F (25 C) db and 50 percent relative humidity with 55 F (13 C) db supply air at 90 percent relative humidity A 50-ton, constant-volume space air conditioning system uses face and bypass and water temperature control. Outdoor air is supplied at 95 F (35 C) db, 60 percent relative humidity with a ratio of 1 Ibm (kg) to 5 Ibm (kg) return air. A part-load condition exists where the total space load decreases by 50 percent and the SHF increases to 90 percent. The outdoor air condition changes to 85 F (29 C) db and 70 percent relative humidity. Assume sea-level pressure. (a) At what temperature must the air be supplied to the space under the part-load condition? (b) If the air leaving the coil has a dry bulb temperature of 60 F (15 C), what in the ratio of the air bypassed to that flowing through the coil? (c) What is the apparatus dew point temperature for both the design and part-load conditions? (d) Show all the processes on a psychrometric chart.

A compound tube is formed by shrinking together two tubes with common radius 150 mm and thickness 25 mm. The shrinkage allowance is to be such that when an internal pressure of 30 MN/m2 (300 bar) is applied the final maximum stress in each tube is to be the same. Determine the value of this stress. What must have been the difference in diameters of the tubes before shrinkage? E = 210GN/m2.

Why do we use angled drafts in casting

A 0.2 m^3 piston/cylinder contains air at 400 K and 400 kPa and receives heat from a constant temperature heat source at 1300 K. The piston expands at constant pressure to a volume of 0.6 m^3. Determine the change of availability of the system. Assume To= 300K and Po = 100kPa.

Answer should be 210.3 kJ.

How does shot peening introduce residual stresses over a material surface?

Explain its mechanism by drawing the material surface plastically deformed as a result of the impact of the shot.