The adhesion between the surface of property wrung gage blocks is of the order of
A.0-5 atmospheres
B.5-10 atmospheres
C.20-30 atmospheres
D.none of the above
Category: Mechanical Engineering Mcqs
The power supplied to domestic consumers is at 220 volts. This represents
A.Peak value of voltage
B.Mean value of voltage
C.rms value of voltage
D.Any of the above
E.None of the above
Heat treatment of castings is usually done for
A.refinement of grain structure
B.improving machinability
C.relieving internal stress
D.any of the above
Enthalpy of a substance is defined as
A.The sum of internal energy and the work done in forcing unit mass of substance into an enclosure at the constant pressure at which the substance exists
B.Sum of sensible heat + latent heat of substance
C.Total heat content of substance above zero degree centigrade
D.Sensible heat of water + work done in forcing unit mass of substance into an enclosure at constant pressure at which the substance exists
E.None of the above
In case of ideal monoatomic gas, the ratio of specific heats Cp/Cv would be
A.1
B.1.33
C.1.4
D.1.41
E.1.67
As a result of melting in cupola, the percentage of all of the following constituents decreases EXCEPT:
A.Silicon
B.Sulphur
C.Carbon
D.Phosphorous
The facting sand used in foundry generally consists of
A.Alumina, clay and silica
B.Alumina and clay
C.Aluminium and silica
D.Silica and binder
E.Silica and clay
Speculation arises because of
A.Monopolistic competition
B.Stock market
C.Share market
D.Uncertainty of the future
E.All of the above
A gas can never be liquid
A.Above room temperature
B.When it is impure
C.When it is diatomic
D.When it is reactive with any other gas
E.Above critical temperature
