1. When is a pressure operated valves used?

2. Sketch a non-compensated flow control valve.
   i) Differentiate the non-compensated and pressure compensated valve.
   ii) Name 2 example of flow control valve used in industry.

Compare the Otto cycle, Diesel cycle, and Stirling cycle.

a: Draw the P-v diagrams and label all the processes.

b: Draw the corresponding T-s diagrams for the three power cycles and label all the processes.

c: Draw the corresponding T-v diagrams for the three power cycles and label all the processes.

d: Discuss the similarity and the difference about their thermal efficiencies explicitly.

e: Discuss how to improve the thermal efficiencies of the Otto cycle, the Diesel cycle, and the Stirling cycle.

What is intrinsic and extrinsic workability?

Explain how the compressibility and shock wave generation affects the design of fighter jets.

Metallurgy question:What is the most important properties of these materials ( Lead, tin, Silicon, Arsenic)?

For a BCC iron-carbon alloy that contains 0.23 wt% C, calculate the fraction of unit cells that contain carbon atoms.

One carbon atom per   ? unit cells.

(1) Describe briefly the definition of fully developed laminar flow.

(2) From governing laws for fully developed laminar flow, derive an equation for fully developed laminar flow that shows the relation between flowrate and pressure gradient.

Steam at 5mpa and 300C enters a turbine in a steady flow manner, from the turbine the steam expands to 200 kpa with a quality of 90%. FInd the ff:

a. The work done by the steam to the turbine in kj/kg

b. The amount of steam flow rate needed in kg/hr if the turbine produces 200kW of power

c. The efficiency of the expansion process

A rigid tank with a volume of 20 litres initially contains water at 0.1 degree of dryness and a pressure of 175 KPA. A steam disposal Valve is located at the top of the tank. Adding heat and steam by throwing the final case degree of dryness 0.4 and pressure 150 kPa is desired to be made. How much mass is ejected and what is the entropy produced. Heat source temperature 1000 K.

A mass of 0.3 kg of saturated refrigerant-134a is contained in a piston-cylinder device at 240 kPa.
Initially, 70 percent of the mass is in the liquid phase. Now heat is transferred to the refrigerant at
constant pressure until the cylinder contains vapor only.
(a) show the process on a P-v and T-v diagrams with respect to saturation lines. Determine;
(b) the volume occupied by the refrigerant initially,
(c) the work done, and
(d) the total heat transfer.

Describe the conduct of a typical creep test

which materials are best for heat exchangers.
I want to know everything that heat exchanger depends on like reynolds no., thermal conductivity, friction factor, etc.,
please explain everything of dependency of heat exchanger.