Power Plant Engineering Prof. Om Prakash Satyam JRU Ranchi

The object of producing draught in a boiler is

• to provide an adequate supply of air for the fuel combustion

• to exhaust the gases of combustion from the combustion chamber

• to discharge the gases of combustion to the atmosphere through the chimney

• all of the above

The draught produced by a steam jet issuing from a nozzle placed in the ashpit under the fire grate of the furnace is called

• induced steam jet draught

• chimney draught

• forced steam jet draught

• none of these

In water tube boilers

• water passes through the tubes which are surrounded by flames and hot gases

• the flames and hot gases pass through the tubes which are surrounded by water

• forced circulation takes place

• none of these

Which of these is a ‘working fluid’ in liquid phase ?

• Water

• Steam

• Mercury

• Oxygen

Which of these is an output of a ‘Furnace’?

• Fuel gas

• Air

• Flue gases

• Water Vapor

What kind of energy output is obtained from a ‘Steam Power Plant’?

• Heat energy

• Sound energy

• Electricity

• Thermal energy

What kind of a process does a ‘Steam Power Plant’ undergoes?

• Adiabatic

• Cyclic

• Irreversible

• Expansion

What kind of a process does a ‘Steam Power Plant’ undergoes?

• Adiabatic

• Cyclic

• Irreversible

• Expansion

Water that is fed back to the boiler by the pump is called?

• Adsorbate

• Absorbate

• Condenset

• Condensate

The net change in internal energy in a steam power plant is?

• Positive

• Negative

• Zero

• None of the mentioned