In case of impulse steam turbine_____________?
A. there is enthalpy drop in fixed and moving blades
B. there is enthalpy drop only in moving blades
C. there is enthalpy drop in nozzles
D. none of the above
The draught produced by steel chimney as compared to that produced by brick chimney for the same height is_____________?
A. less
B. more
C. same
D. may be more or less
Secondary air is the air used to______________?
A. reduce the flame length
B. increase the flame length
C. transport and dry the coal
D. provide air round the burners for getting optimum combustion
The fuel used in nuclear reactor is_____________?
A. radium
B. cadmium
C. uranium
D. all of the above
Which of the following device is used to measure vacuum?
A. Barometer
B. Hygrometer
C. U-tube manometer
D. Venturi metre
Steam pressure in a steam power station, which is usually kept now-a-days is of the order of____________?
A. 20 kgf/cm2
B. 50 kgf/cm2
C. 100 kgf/cm2
D. 150 kgf/cm2
In a regenerative feed heating cycle, the optimum value of the fraction of steam extracted for feed heating________________?
A. decreases with increase in Rankine cycle efficiency
B. increases with increase in Rankine cycle efficiency
C. is unaffected by increase in Rankine cycle efficiency
D. none of the above