A. 50 : 50
B. 30 : 70
C. 70 : 30
D. 40 : 60
E. 60 : 40
Related Mcqs:
- Brass (alloy of copper and zinc) is an example of__________________?
A. substitutional solid solution
B. interstitial solid solution
C. intermetallic compounds
D. all of the above
E. none of the above - If partial pressure of air and steam be pa and ps respectively in a condenser, then according to Dalton’s law, the pressure in condenser is equal to__________________?
A. Ps-Pa
B. pa-ps
C. Pa+P
D. non of these - Muntz metal contains copper and zinc in the ratio of________________?
A. 50 : 50
B. 40 : 60
C. 60 : 40
D. 20 : 80
E. 80 : 20 - The diameters of fire tubes and superheaer tubes in locomotive boiler are_________________?
A. 47.5 mm, 130 mm
B. 32.5 mm, 180 mm
C. 65.5 mm, 210 mm
D. 24.5 mm, 65 mm - Admiralty gun metal contains__________________?
A. 63 to 67% nickel and 30% copper
B. 88% copper, 10% tin and rest zinc
C. alloy of tin, lead and cadmium
D. iron scrap and zinc
E. none of the above - One kg of steam sample contains 0.8 kg dry steam; it’s dryness fraction is__________________?
A. 0.2
B. 0.8
C. 1.0
D. 0.6
E. 0.5 - Aluminium bronze contains aluminium and copper in the ratio of___________________?
A. 50 : 50
B. 40 : 60
C. 60 : 40
D. 10 : 90
E. 90 : 10 - In an experiment to determine dryness fraction of steam, the mass of water separated was 1.2 kg in 15 mts and the mass of steam passed out in same time was 4.8 kg. Dryness fraction is__________________?
A. 40%
B. 25%
C. 50%
D. 80%
E. 90% - Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?
A. desirable
B. economical
C. essential
D. optional
E. uneconomical - Vacuum for reciprocating steam engines compared to steam turbines is__________________?
A. more
B. equal
C. less
D. could be more or less depending on the size of plant
E. none of the above
