1. The shear force and bending moment are zero at the free end of a cantilever beam, if it carries a ?

point load at the free end

point load at the middle of its length

uniformly distributed load over the whole length

none of the above

Answer: uniformly distributed load over the whole length

Explanation:


2. The ratio of the lateral strain to the linear strain is called ?

modulus of elasticity

modulus of rigidity

bulk modulus

Poisson's ratio

Answer: Poisson's ratio

Explanation:


3. The shear force diagram for a simply supported beam carrying a uniforinly distributed load of w per unit length, consists of ?

one right angled triangle

two right angled triangles

one equilateral triangle

two equilateral triangles

Answer: two right angled triangles

Explanation:


4. A spring used to absorb shocks and vibrations is ?

conical spring

torsion spring

leaf spring

disc spring

Answer: leaf spring

Explanation:


5. The rectangular beam A has length 1, width b and depth d. Another beam 'B' has the same width and depth but length is double that of 'A'. The elastic strength of beam 'B' will be.............as compared to beam A ?

same

one-halt

one-fourth

one-eighth

Answer: one-halt

Explanation:


6. Two bars of different materials and same size are subjected to the same tensile force. If the bars have unit elongation in the ratio of 2:5, then the ratio of modulus of elasticity of the two materials will be ?

2:5

5:2

4:3

3:4

Answer: 5:2

Explanation:


7. A beam which is fixed at one end and free at the other is called ?

simply supported beam

fixed beam

overhanging beam

cantilever beam

Answer: cantilever beam

Explanation:


8. If there is a fall in the temperature of a composite body, then a member having greater coefficient of linear expansion will be subjected to compressive stress ?

True

False

may be true

may be false

Answer: False

Explanation:


9. The bending stress in a beam is.............. bending moment ?

equal to

less than

more than

directly proportional to

Answer: directly proportional to

Explanation:


10. The elongation of a conical bar under its own weight is............. that of prismatic bar of the same length ?

equal to

half

one-third

two-third

Answer: one-third

Explanation: