Oleum is
A.a misture of conc. H2SO4 and oil
B.sulphuric acid which gives fumes of sulphur dioxide
C.sulphuric acid saturated with sulphur trioxide
D.a mixture of sulphuric and nitric acid.
Category: Engineeeing Mcqs
For most industrial electrostatic precipitator installations particledrift velocity which is used to calculate the precipitation efficiency varies from
A.3 to 8 ft/s
B.0.1 to 1 ft/s
C.60 to 80 ft/s
D.15 to 20 ft/s
If an old casting is to be used as a pattern, to account for various allowances.
A.casting is shaken while withdrawing from mould
B.the surfaces are lagged with thin strips of wood or leater
C.the castings are cleaned and made smooth
D.to provide draw screws, holes can be drilled and tapped in the castings
The value of thermal conductivity of water at room temperature is expected to be
A.0.001 kcal/m-hr-?C
B.0.05 kcal/m-hr-?C
C.0.5 kcal/m-hr-?C
D.1.0 kcal/m-hr-?C
E.1.5 kcal/m-hr-?C
Energy may be defined as
A.the capacity to do work
B.the product of mass and acceleration
C.the rate of doing work
D.the product of force and velocity
The distance between nucleons in atomic nucleus is of the order of
A.200 Fermi
B.2 Fermi
C.50 Fermi
D.1000 Fermi
To avoid moisture trubles, the branch connection from compressed air line are taken from
A.Top side
B.Bottom side
C.Left side
D.Right side
E.Any side
For mild steel work piece using carbide tool, the temperature at which maximum materials is removed is
A.Below room temperature
B.Near zero deg centigrade
C.100?C
D.200?C
E.275?C
In martensitic stainless steel the difference between the chromium percentage and seventeen times the carbon content is
A.less than 12.5%
B.greater than 12.5 %
C.greater than 24%
D.less than 18%
The terminal velocity of a small sphere setting in a viscous fluid varies as the
A.Inverse of the diameter
B.Inverse square of the diameter
C.Fluid viscosity
D.Inverse of the fluid viscosity
E.None of the above
