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.Management Sciences
Category: Strength of Materials
Which of the following is the example of lever of first order__________________?
A. arm of man
B. pair of scissors
C. pair of clinical tongs
D. all of the above
E. none of the above
The property of a material by virtue of which it can be beaten or rolled into plates is called _________________?
A. malleability
B. ductility
C. plasticity
D. elasticity
E. reliability
The elasticity of various materials is controlled by its___________________?
A. ultimate tensile stress
B. proof stress
C. stress at yield point
D. stress at elastic limit
E. tensile stress
The deformation of a bar under its own weight compared to the deformation of same body subjected to a direct load equal to weight of the body is_______________?
A. same
B. double
C. half
D. four times
E. one-fourth
The safe twisting moment for a compound shaft is equal to the _________________?
A. maximum calculated value
B. minimum calculated value
C. mean value
D. extreme value
E. none of the above
In actual machines_____________________?
A. mechanical advantage is greater than velocity ratio
B. mechanical advantage is equal to velocity ratio
C. mechanical advantage is less than velocity ratio
D. mechanical advantage is unity
E. none of the above
A flywheel on a motor goes from rest to 1000 rpm in 6 sec. The number of revolutions made is nearly equal to_________________?
A. 25
B. 50
C. 100
D. 250
E. 500
The stress at which extension of the material takes place more quickly as compared to the increase in load is called______________?
A. elastic point of the material
B. plastic point of the material
C. breaking point of the material
D. yielding point of the material
E. ultimate point of the material
A non-yielding support implies that the_________________?
A. support is frictionless
B. support can take any amount of reaction
C. support holds member firmly
D. slope of the beam at the support is zero
E. none of the above
Flow stress corresponds to___________________?
A. fluids in motion
B. breaking point
C. plastic deformation of solids
D. rupture stress
E. none of the above
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