An axial hoad is applied on a circular section of diameter D. If the same load is applied on hollow circular section with inner diameter D/2, the ratio of stress in two cases would be
A.4?3
B.1
C.3?4
Category: Mechanical Engineering Mcqs
A Lungistrom turbine is
A.Impulse turbine
B.Reaction turbine
C.Outward radial flow turbine
D.Inward flow impulse reaction turbine
E.None of the above
During hardening soft spots can be avoided by
A.using a more effective cooling medium
B.protecting against decarburization in heating
C.obtaining a more homogeneous structure employing annealing or normalising before hardening
D.Any of the above
Real wages represent
A.The purchase power of money wages
B.The total wages camed including perquisites
C.The gross wages carned by an employee
D.The net take home wages
E.Wages inclusive of fringe benefits
Compression ratio in case of gas engines waries in the range
A.5 to 10
B.10 to 15
C.15 to 20
D.20 to 24
E.24 to 30
An Orsat’s apparatus is used for
A.Volumetric analysis of the flue gas
B.Gravimetric analysis of the flue gases
C.Smoke density analysis of the flue gases
D.All of above
E.None of above
Out of the following metals the least permissible percentage in drinking water is
A.Chromium
B.Copper
C.Zinc
D.Lead
Coriolis component is not involved in
A.Quick return mechanism
B.Tangent cam acceleration
C.Andreau variable stroke engine mechanism
D.Line sliding in a swivelling pin
E.Slider crank mechanism
An induction motor stator is cooled by
A.Air
B.Water
C.Hydrogen
D.Air and water
E.None of the above
