Practice Pakistan's most useful MCQs for competitive exams

The maximum deflection due to a uniformly distributed load w/unit length over entire span of a cantilever of length l and of flexural rigidly EI, is_________________?

• (A)  wl3/3EI
• (B)  wl4/3EI
• (C)  wl4/8EI
• (D)  wl4/12EI

Answer

Submitted By :Ali Uppal

A load of 1960 N is raised at the end of a steel wire. The minimum diameter of the wire so that stress in the wire does not exceed 100 N/mm2 is________________?

• (A)  4.0 mm
• (B)  4.5 mm
• (C)  5.0 mm
• (D)  5.5 mm

Answer

Submitted By :Ali Uppal

A concentrated load P is supported by the free end of a quadrantal ring AB whose end B is fixed. The ratio of the vertical to horizontal deflections of the end A, is______________?

• (A)  /6
• (B)  /2
• (C)  /3
• (D)  /4

Answer

Submitted By :Ali Uppal

The assumption in the theory of bending of beams is_________________?

• (A)  Material is homogeneous
• (B)  Material is isotropic
• (C)  Young’s modulus is same in tension as well as in compression
• (D)  All the above

Answer

Submitted By :Ali Uppal

The ratio of the area of cross-section of a circular section to the area of its core, is_______________?

• (A)  4
• (B)  8
• (C)  12
• (D)  16

Answer

Submitted By :Ali Uppal

The force in CD of the truss shown in given figure, is________________?

• (A)  3t compression
• (B)  3t tension
• (C)  Zero
• (D)  1.5t compression

Answer

Submitted By :Ali Uppal

An isolated load W is acting at a distance a from the left hand support, of a three hinged arch of span 2l and rise h hinged at the crown, the horizontal reaction at the support, is_________________?

• (A)  Wa/h
• (B)  Wa/2h
• (C)  2W/ha
• (D)  2h/Wa

Answer

Submitted By :Ali Uppal

A bar L metre long and having its area of cross-section A, is subjected to a gradually applied tensile load W. The strain energy stored in the bar is_________________?

• (A)  WL/2AE
• (B)  WL/AE
• (C)  W²L/AE
• (D)  W²L/2AE

Answer

Submitted By :Ali Uppal

The greatest load which a spring can carry without getting permanently distorted, is called_________________?

• (A)  Stiffness
• (B)  Proof resilience
• (C)  Proof stress
• (D)  Proof load

Answer

Submitted By :Ali Uppal

m1 and m2 are the members of two individual simple trusses of a compound truss. The compound truss will be rigid and determinate if__________________?

• (A)  m = m1 + m2
• (B)  m = m1 + m2 + 1
• (C)  m = m1 + m2 + 2
• (D)  m = m + m + 3

Answer

Submitted By :Ali Uppal