2. (10 pts) Air (R = 0.287 kJ/kg.K) enters the compressor of a simple Brayton cycle at 94 kPa and 7^oC. The pressure ratio is 19.2, the compressor efficiency is 81%, the turbine inlet temperature is 1600 K and the turbine isentropic efficiency is 85%. The mass flow rate is 21 kg/s. Using variable specific heat analysis, determine:
   1. (2 pts) The power input to the compressor, in kW.
   2. (2 pts) The rate of heat input in the combustion chamber, in kW.
   3. (3 pts) The net power produced by the engine, in kW.
   4. (1 pt) The overall efficiency
   5. (2 pts) The density of the air exiting the compressor, in kg/m³.

            What do we mean when we say “a preferred size”? Explain and give an example.

A cylindrical storage tank contains liquefied propane under a pressure of 1.5 MPa (gage pressure P=1.5 MPa) and is subjected to a torque T=5 kN-m. Knowing that the tank has an inner diameter of 320 mm and a wall thickness of 3 mm, find the principal stresses and determine the maximum shear stress.

Discuss the use of the RS-485 repeater.

how to produce a bolt using traditional methods ?

4. A device used to expose fighter pilots to high g’s that they might experience in action incorporates a small cockpit on the end of a 50 ft. long radial shaft that is attached to the cg. of the cockpit. The cockpit and pilot weigh 600 lb total. If there is a motor that provides a torque of 1000*sqrt(t) ft-lb to the system, calculate the following:
   1. How fast does the cockpit have to travel to produce 6 g’s?
   2. How long does the system take to get to that speed?

Assume you have a metal alloy - an aluminum alloy for example - that has been welded and then heat treated in a way that leaves you uncertain as to the microstructure. Since the component is to be used for a critical application, you want to be sure of both the structure and mechanical properties. You want to create a single phase structure so that you can "start over" with a new heat treat cycle to more exactly and carefully create the desired properties. What type of heat treatment would you use to create the single phase structure?

1. Write a report on advancement in wheel and tyre technology.Also the report should be consest of 10-12 Page,Advantage disadvantage,Future scope.Plagarsim level should be Zero.

Please don't answer if you don't know and write the report on 10-12 page minimum.
For small answer or for plagrism I will downrate your answer.So if you know than only answer it

8. Figure 1 shows an artificial neuron. If the node has three inputs and could receive only binary signals (either 0 or 1), what are the input pattern it can receive?

Fluid (air) enters a nozzle at 150 m/s, 26.85 oC, and at a pressure of 200 kPa. Assuming isentropic flow, evaluate the temperature and pressure of the fluid at a location where the speed of fluid equals the speed of sound. What is the ratio of the area at this location to the entrance area?

The spray characteristics of a highly toxic liquid fuel, especially particle their diameter is required. In the examination, the particle diameter dp, spray outlet rate U, liquid viscosity µ, surface tension Y, density ρ and spray it is suggested that the spray injector is connected to the outlet diameter D and is safe it is suggested that an experiment can be carried out with water, design and state the requirements for the creation of this experiment and obtain how to use your data for prototype fuel in mathematical terms If necessary, write with dimensionless numbers.

In an industrial process, 20 mm diameter spherical steel ball bearings are heat-treated to improve their durability. For application (1), the entire ball bearing needs to be heated evenly to 1000 K. For application (2), only the outer 1 mm of the ball is to be heated to a temperature in excess of 1000 K. The properties of the ball bearing are c = 0.5 kJ/kg*K; p = 7800 kg/m³; k = 50 W/m.K. At your facility, you have access to two heating processes: a high-temperature convection oven (Tmax = 1200 K) and a liquid-salt immersion bath (Tmax = 1200 K). The convective heat transfer coefficients (h) are 50 W/m²K for the oven and 5000 W/m²K for the bath.

a) Which process would you use for each application, and why?

b) For application (1), using the process you selected in (a) calculate the time required to heat a ball that starts from 50^oC to the target temperature of 1000 K.

c) For application (2), using the process you selected in (a), calculate the time required to heat the outer layer of the ball to its target temperature.

d) For your answer in (c), what would be the temperature at the centre of the ball?

4: Consider a vapor refrigeration cycle.
a: Draw the T-s diagram of the reversed Carnot Cycle and describe what kind of problem each process of the cycle has explicitly. (We use the mixture of liquid and vapor as its working fluid.)
b: Draw a T-s diagram in the ideal refrigeration cycle and label each process explicitly. Write down the COP in terms of enthalpy.
c: There are the multipurpose refrigeration system and the multistage refrigeration system to improve the ideal refrigeration system. Describe their cycles in terms of the property diagrams explicitly and discuss the reasons why they are necessary.
d: Discuss the current status of existing refrigerants and describe how to resolve their problems explicitly.