During polytropic process_________________?
(A) heat transfer takes place across cylinder walls
(B) work is done
(C) steam may be wet, dry or superheated after expansion
(D) all of the above
(D) none of the above
Cochran boiler is a__________________?
(A) horizontal fire-tube boiler
(B) horizontal water-tube boiler
(C) veritcal water-tube boiler
(D) vertical fire tube boiler
(D) forced circulating boiler
Orsat meter is used for__________________?
(A) gravimetric analysis of the flue gases
(B) volumetric analysis of the flue gases
(C) mass flow of the flue gases
(D) measuring smoke density of flue gases
(D) none of the above
An ideal regenerative cycle is ______________________?
(A) equal to carnot cycle
(B) less than carnot cycle
(C) more than carnot cycle
(D) could be anything
(D) none of the above
Lancashire ‘boiler is a__________________?
(A) stationary fire tube boiler
(B) stationary water tube boiler
(C) water tube boiler with natural/forced circulation
(D) mobile fire tube boiler
(D) none of the above
One kilowatt-hour energy is equivalent to ________________?
(A) 1000 J
(B) 360 kJ
(C) 3600 kJ
(D) 3600 kW/sec
(D) 1000 kJ
100% efficiency of a thermal cycle cannot be achieved because of __________________?
(A) frictional losses
(B) it is not possible to achieve 0°K temperature
(C) leakage
(D) non-availability of ideal substance
(D) none of the above
The diameter of fire tube of Cornish boiler compared to its shell is__________________?
(A) one half
(B) one third
(C) one-fifth
(D) two-fifth
(D) three-fifth
On Millier chart, the constant pressure lines_________________?
(A) diverge from left to right
(B) diverge from right to left
(C) are equally spaced throughout
(D) first rise up and then fall
(D) none of the above
The bituminous coal is non-caking if its carbon content is_______________?
(A) 78-81%
(B) 81-85%
(C) 85-90%
(D) 90-95%
(D) 95-100%.