Mechanical Engineering Mcqs

If the rivets in adjacent rows are staggered and the outermost row has only one rivet, the arrangement of the rivets is called__________________?

• (A)  chain riveting
• (B)  zig zag riveting
• (C)  diamond riveting
• (D)  criss-cross riveting
• (E)  none of the above

Answer

Submitted By :Ali Uppal

Rivets are made of following type of material_________________?

• (A)  tough
• (B)  hard
• (C)  resilient
• (D)  ductile
• (E)  malleable

Answer

Submitted By :Ali Uppal

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

Answer

Submitted By :Ali Uppal

A boiler shell 200 cm diameter and plate thickness 1.5 cm is subjected to internal pressure of 1.5 MN/m , then the hoop stress will be_________________?

• (A)  30 MN/m2
• (B)  50 MN/m2
• (C)  100 MN/m2
• (D)  200 MN/m2
• (E)  300 MN/m2

Answer

Submitted By :Ali Uppal

Longitudinal stress in a thin cylinder is__________________?

• (A)  equal to the hoop stress
• (B)  twice the hoop stress
• (C)  half of the hoop stress
• (D)  one-fourth of hoop stress
• (E)  four times the hoop stress

Answer

Submitted By :Ali Uppal

The stress necessary to initiate yielding is_________________?

• (A)  considerably greater than that necessary to continue it
• (B)  considerably lesser than that necessary to continue it
• (C)  greater than that necessary to stop it
• (D)  lesser than that necessary to stop it
• (E)  equal to that necessary to stop it

Answer

Submitted By :Ali Uppal

The stress developed in a material at breaking point in extension is called_________________?

• (A)  breaking stress
• (B)  fracture stress
• (C)  yield point stress
• (D)  ultimate tensile stress
• (E)  proof stress

Answer

Submitted By :Ali Uppal

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

Answer

Submitted By :Ali Uppal

The ratio of direct stress to volumetric strain in case of a body subjected to three mutually perpendicular stresses of equal intensity, is equal to___________________?

• (A)  Young’s modulus
• (B)  bulk modulus
• (C)  modulus of rigidity
• (D)  modulus of elasticity
• (E)  Poisson’s ratio

Answer

Submitted By :Ali Uppal

The internal reaction in bottom 80 cm length will be________________?

• (A)  same in both cases
• (B)  zero in first case
• (C)  different in both cases
• (D)  data are not sufficient to determine same
• (E)  none of the above

Answer

Submitted By :Ali Uppal