HARD
Earn 100
What do you understand by buckling in beams?
Important Questions on Mechanical Properties of Solids
EASY
The area of cross section of the rope used to lift a load by a crane is . The maximum lifting capacity of the crane is metric tons. To increase the lifting capacity of the crane to 25 metric tons, the required area of cross section of the rope should be
(take )
MEDIUM
A wire is stretched such that its volume remains constant. The Poisson’s ratio of the material of the wire is:
MEDIUM
While constructing buildings and bridges a pillar with distributed ends is preferred to a pillar with rounded ends. Why?
EASY
Let a steel bar of length , breadth and depth be loaded at the centre by a load . Then the sag of bending of the beam is Young's modulus of material of steel).
HARD
Why are the beams used in the construction of bridges I-shaped?
EASY
A steel bar of length , breadth , and depth loaded at the centre by a load . The sag of c.g is given by
HARD
Why the maximum height of mountains on earth is ?
HARD
Explain why the maximum height of a mountain on earth is approximately ?
EASY
Explain application of elastic behaviour of material.
HARD
Explain the meaning of buckling in beams.
HARD
What can be the maximum height of a mountain on earth?
HARD
Explain the difference between buckling and bending of a beam.
HARD
The expression for the sag produced in a beam when it is loaded at the center is given by
HARD
Which of the following expressions can be used to calculate the maximum height of mountains on earth?
MEDIUM
Explain why steel is preferred to copper, brass, aluminium in heavy-duty machines and in structural designs.
EASY
A beam of metal supported at two ends is loaded at the centre. The depression at the centre is proportional to , where denotes Young's modulus of material. The value of is
HARD
What shape is preferred for the beams that are used in construction of bridges? Why?
EASY
A rectangular beam of metal, supported at its two ends is loaded at the centre. If is Young's modulus of the material of beam then bending of the beam at the centre is proportional to
EASY
Cotyledons are also called-
EASY
Which of the following relations is incorrect for the sag of beam?
Where, is load, is length of the beam, is breadth of the beam, is depth of the beam, is Young's modulus of the material of beam.
