B. steam jet

C. air fans

D. fan or steam jet

A. adiabatic heat drop to isentropic heat drop

B. isentropic heat drop to useful heat drop

A. anywhere permissible

B. at the top of the chimney

C. near bottom of furnace

A. may be more or less depending upon the magnitude of p1 and p2

C. has same thermal efficiency as carnot cycle operating between same pressure limits

D. has lower thenal efficiency than carnot cycle operating between same pressure limit?

B. spreader

C. travelling grate

D. chain grate

B. all of the above

C. due to the fact that at the chimney top the pressure is more than its environmental pressure

D. due to the fact that furnace gases being light go through the chimney giving place to cold air from outside to rush in

A. none from the above

C. the pressure in the turbine rotor is higher than pressure in the condenser

D. the pressure in the turbine rotor gradually decreases from inlet to exit from condenser

A. improves in summer as compared to that in winter

B. none of the above

C. is unaffected by climatic conditions

B. higher saturation temperature than other fluids

C. higher critical temperature and pressure

D. relatively low vapourisation pressure

A. increase the flame length

C. provide air around burners for getting optimum combustion

D. reduce the flame length

A. sand

C. dust

D. clinkers

A. simple single wheel, impulse steam turbine

B. simple single wheel reaction steam turbine

D. pressure compounded steam turbine

B. remains same irrespective of number of stages

C. decreases with the increase in number of stages

D. none of the above

A. Unequal expansion may create voids in the insulation which will lead to ionization

B. The oil may loose its viscosity and it may start drawing off from higher levels

C. Expansion of the oil may cause the sheath to burst

D. The thermal instability may rise due to the rapid increase of dielectric losses with temperature

A. increase in exit velocity from the nozzle

C. no change in exit velocity from the nozzle

D. increase or decrease depending upon the exit quality of steam

A. no change in the quality of exit steam

C. decrease or increase of dryness fraction of exit steam depending upon inlet quality

D. decrease in dryness fraction of exit steam

A. forced draught

B. induced draught

C. balanced draught

A. 0.578

B. 0.6

C. 0.555

B. pv1i = C

C. pv = C

D. pv1A = C

A. either A. or (b)

B. none of the above

C. water in pipes surrounded by steam

A. using a solar pond

C. using flat plate collectors

D. using focusing collector or heliostates

A. removes only un-condensed vapour from condenser

C. removes air and also vapour from condenser

D. removes only air from condenser

A. is same as simple Rankine cycle thermal efficiency

B. is greater than simple Rankine cycle thermal efficiency only when steam is bled at particular pressure

C. is always less than simple Rankine cycle thermal efficiency