Distinguish between a fire tube and a water tube boiler. In which case will the thickness of drum of water be less, if two types of same capacity are compared Which boiler will have less reserved energy and why?

Show the shapes of fixed and moving blades in impulse and reaction turbine working on steam.

In how many different ways can the solar energy be used for generating power Despite solar energy being free, use of solar energy for power is very less. Give reasons. Describe other applications of solar energy.

What is biogas What are the sources of biogas How can we use biogas for power generation?

Define indicated power and brake power of an engine. Also define mean effective pressure. Show how you would calculate IP.

Describe how BP of an engine is measured in a laboratory. Why do you need to cool brake pulley?

4. In a steam power plant, the following are essential components: Air preheater, economizer, superheater, feed pump and boiler. Show on sketch/block diagram how these components are arranged and indicate the direction of flow of water and steam. Also describe the functions of air preheater and economizer.

5. What are the methods of removing particulate matter from flue gases Describe anyone of them. What harmful effects are associated with particulate matter exhausting in atmosphere?

Distinguish between two types of hydro-turbines. Where are they used? Sketch the hydro-power plant and mark various components. Name three turbines and state where they are used.

What is wind energy? Explain with a neat sketch the wind energy power plant.

Distinguish between throttling and adiabatic processes.

In a gas turbine plant, the air pressure and temperature before compression are 1 bar and 28°C respectively. Pressure ratio =3·5, and the temperature of gas before expansion is 700°C. If the isentropic efficiencies of the compressor and turbine are 80% and 85% respectively, calculate

the efficiency of the cycle, and

the turbine exhaust temperature.

Write the expressions for work done for

isentropic process,

constant volume and constant pressure processes, and

constant temperature process.

A boiler generates 5000 kg/hr of steam at 16 bar and 300°C from feed water at 30°C. Coal used is 600 kg/hr of CV 30000 kJ/kg. Find the efficiency of the boiler.

9. Sketch the Babcock and Wilcox boiler and show the position of superheater. Why are the tubes in this boiler inclined? Show the path of hot gases.

10.(a) How is the overall efficiency of a combined gas turbine power plant improved using reheat, regeneration and inter-cooling together? Explain with p diagram.

Calculate the volume of oxygen required for complete combustion of 1 m^3 of C2H2 and CO at constant pressure.