Floating heads are provided in heat exchangers to
A.Increase the pressure drop
B.Reduce the pressure drop
C.Facilitate maintenance
D.Regulate the flow
E.Avoid deformation of tubes due to thermal expansion
Category: Engineeeing Mcqs
Three Carnot engines A, B and C having source temperature of 750?K, 700?K and 650?K have sink temperatures respectively 400?k, 350?k and 300?k. Which engine is the least efficient?
A.Engine A
B.Engine B
C.Engine C
D.All being Carnot engine have identical efficiencies
Which of the following has least wave-length?
A.Cosmic rays
B.Ultraviolet rays
C.X-rays
D.Gamma rays
Steel balls for ball bearings are generally made of
A.Stainless steel
B.Free carbon steel
C.Carbon chrome steel
D.Nodular cast iron
E.Cast steel
Bleaching powder is manufactured by the action of CI2 on
A.quicklime
B.slaked lime
C.milk of lime
D.soda lime
Which of the following test on castings is based on sound?
A.Impact test
B.Percussion test
C.Radiographic
D.Magnetic particle inspections
A continuous beam is one which is
A.Infinitely long
B.Supported at two points only
C.Supported at more than two supports
D.Fixed at the ends and simply supported at intermediate point
E.None of the above
Which one of the following is not a disadvantage due to a Buttress dam?
A.The structure being self-sealing, it is not sensitive to accidental rise in water level above the designed full supply level
B.Bearing stress of the foundtions are higher
C.Problems arising out of large number of joints in the dam
D.Significance of volume changes of thin members
E.Overflow arrangements
A twist drill is specified by
A.The size of hole it can drill
B.A number specifying hole size
C.A letter of alphabet
D.Any of the above
E.None of above
