Disinfection of drinking water means removal of
A.Turbidity
B.Colour
C.Odour
D.Oxygen
E.Bacteria
Category: Mechanical Engineering Mcqs
Which one of the following materials will have highest cutting speed?
A.Cast iron
B.Tool steel
C.Brass
D.Bronze
E.Aluminium
CPM is a technique based on
A.event
B.event and activity
C.neither event nor activity
D.activity
The Biflar susperision method is used to determine
A.Position of balancing weights
B.Centripetal acceleration
C.Natural frequency of vibration
D.Moment of inertia
E.None of the above
The residual stresses in casting occur due to
A.sand particles being taken into molten metal while pouring
B.the insufficient gate size
C.the differential solidification rate of thin and thick sections of casting
D.none of the above
Pattern draft for internal surfaces is
A.Less than that for external surfaces
B.More than that for external surfaces
C.Equal to that for external surfaces
The important factor to be considered while selecting a bearing is
A.Applied load
B.Operating speed range
C.Required bearing capacity
D.All of the above
E.None of the above
In centrifugal compressors, the ratio of outlet whirl velocity to blade velocity at outlet is known as
A.Slip factor
B.Gauge factor
C.Feedback factor
D.Velocity factor
E.Reheat factor
Highly polished surfaces of a thermosflask prevent heat by
A.Conduction
B.Convection
C.Radiation
Which one of the following is a safety device on a compressor?
A.Relief valve
B.Strainer
C.Over pressure shut down
D.Over speed shut down
E.Intercooler relief valve
