# Practice Test: Question Set - 24

**1. The bending moment of a cantilever beam of length**

*l*and carrying a uniformly distributed load of*w*per unit length is __________ at the free end.- (A) Zero

- (B)

*wl*/4

- (C)

*wl*/2

- (D)

*wl*

**2. For a shaft, the shear stress at a point is __________ the distance from the axis of the shaft.**

- (A) Equal to

- (B) Directly
proportional to

- (C) Inversely
proportional to

- (D) None of
these

**3. The bending moment diagram for a simply supported beam carrying a uniformly distributed load of**

*‘w’*per unit length, will be- (A) A horizontal
line

- (B) A
vertical line

- (C) An inclined
line

- (D) A parabolic
curve

**4. When one plate overlaps the other and the two plates are riveted together with two rows of rivets, the joint is known as**

- (A) Single
riveted lap joint

- (B) Double
riveted lap joint

- (C) Double
riveted single cover butt joint

- (D) Double
riveted double cover butt joint

**5. When a body is subjected to a direct tensile stress (Ïƒ) in one plane, the maximum shear stress is __________ the maximum normal stress.**

- (A) Equal to

- (B) One-half

- (C) Two-third

- (D) Twice

**6. The ductility of a material __________ with the increase in percentage reduction in area of a specimen under tensile test.**

- (A) Increases

- (B) Decreases

- (C) Remains same

- (D) None of
these

**7. Rivets are generally specified by**

- (A) Thickness
of plates to be joined

- (B) Overall
length

- (C) Shank
diameter

- (D) Diameter
of head

**8. The simply supported beam '**

*A*' of length ‘*l’*carries a central point load ‘*W’*. Another beam '*B*' is loaded with a uniformly distributed load such that the total load on the beam is ‘*W’*. The ratio of maximum deflections between beams*'A'*and*'B'*is- (A) 5/8

- (B) 8/5

- (C) 5/4

- (D) 4/5

**9. The rectangular beam**

*'A'*has length ‘*l’*, width ‘*b’*and depth ‘*d’*. Another beam*'B'*has the same length and depth but width is double that of*'A'*. The elastic strength of beam*'B'*will be _________ as compared to beam ‘*A’*.- (A) Same

- (B) Double

- (C) Four times

- (D) Six times

**10. The bending moment in the center of a simply supported beam carrying a uniformly distributed load of**

*w*per unit length is- (A) Zero

- (B)

*wl²*/2

- (C)

*wl²*/4

- (D)

*wl²*/8

**11. The polar modulus for a solid shaft of diameter (**

*D*) is- (A)

*Ï€D²/4*

- (B)

*Ï€D³/16*

- (C)

*Ï€D³/32*

- (D)

*Ï€D⁴/64*

**12. The slenderness ratio is the ratio of**

- (A) Area of
column to least radius of gyration

- (B) Length of
column to least radius of gyration

- (C) Least radius
of gyration to area of column

- (D) Least
radius of gyration to length of column

**13. A simply supported beam**

*'A'*of length ‘*l’*, breadth ‘*b’*and depth ‘*d’*carries a central load ‘*W’*. Another beam '*B*' of the same dimensions carries a central load equal to 2*W*. The deflection of beam*'B'*will be __________ as that of beam*'A'*.- (A) One-fourth

- (B) One-half

- (C) Double

- (D) Four times

**14. When a bar of length ‘**

*l’*and diameter*‘d’*is rigidly fixed at the upper end and hanging freely, then the total elongation produced in the bar due to its own weight is (where*w*= Weight per unit volume of the bar)- (A)

*wl/2E*

- (B)

*wl²/2E*

- (C)

*wl³/2E*

- (D)

*wl⁴/2E*

**15. In a riveted joint, when the rivets in the various rows are opposite to each other, the joint is said to be**

- (A) Chain
riveted

- (B) Zig-zag
riveted

- (C) Diamond
riveted

- (D) None of
these

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