The maximum percentage gain in Regenerative feed heating cycle thermal efficiency____________?
A. increases with number of feed heaters increasing
B. decreases with number of feed heaters increasing
C. remains same unaffected by number of feed heaters
D. none of the above
The draught in locomotive boilers is produced by_____________?
A. forced fan
B. chimney
C. steam jet
D. only motion of locomotive
The proper indication of incomplete combustion is_______________?
A. high CO content in flue gases at exit
B. high CO2 content in flue gases at exit
C. high temperature of flue gases
D. the smoking exhaust from chimney
In a regenerative feed heating cycle, the greatest economy is affected___________?
A. when steam is extracted from only one suitable point of steam turbine
B. when steam is extracted from several places in different stages of steam turbine
C. when steam is extracted only from the last stage of steam turbine
D. when steam is extracted only from the first stage of steam turbine
The ratio of exit pressure to inlet pressure of maximum mass flow rate per area of steam through a nozzle when steam is initially superheated is__________?
A. 0.555
B. 0.578
C. 0.5457
D. 0.6
A gas turbine basically work on
A. Carnot cycle
B. Rankin cycle
C. Brayton cycle
D. Dual cycle
In a shell and tube surface condenser____________?
A. steam and cooling water mix to give the condensate
B. cooling water passes through the tubes and steam surrounds them
C. steam passes through the cooling tubes and cooling water surrounds them
D. all of the above varying with situation