Mechanical Engineering Questions and Answers

Mechanical Engineering Questions and Answers

1- The moment of the force about a point is equal to the algebraic sum of the component forces about the same point is known as

(A) Varignon’s theorem

(B) Law of triangle

(C) Law of Parallelogram

(D) Tresca theory

 

2- The radius of a Mohr’s circle represents

(A) Minimum shear stress

(B) Maximum shear stress

(C) Minimum normal stress

(D) Maximum normal stress

 

3- The area under the stress-strain diagram up to the rupture point is known as

(A) Modulus of resilience

(B) Modulus of elasticity

(C) Modulus of toughness

(D) Proof resilience

 

4- The minimum number of strain gauges in a strain rosette is

(A) Four

(B) Three

(C) Two

(D) One

 

5- The variation of bending stress in a curved beam is ———–in nature.

(A) Hyperbolic

(B) Parabolic

(C) Cubic

(D) Linear

 

6- Indenter used in Brinell Hardness test is

(A) Spero conical diamond

(B) Sphere made of steel or tungsten carbide

(C) Rectangular based pyramid diamond

(D) Square base pyramid diamond

 

7- Atoms are arranged in face centered cubic (FCC) structure as

(A) All eight corners of the cube and one at the body center with one at the center of each face

(B) All eight corners of the cube and at the center of each face

(C) All eight corners of the cube and one at the body center

(D) All eight corners of the cube

 

8- Shrinkage allowance on the pattern is provided to take care of

(A) Any one, liquid or solid shrinkage

(B) Liquid and solid shrinkage

(C) Solid shrinkage

(D) Liquid shrinkage

 

9- Decreasing the clay content in the moulding sand increases the

(A) Flowability

(B) Green strength

(C) Refractoriness

(D) Permeability

 

10- Chills are used in the casting to

(A) To connect the poring basin and runner

(B) To cool the mould rapidly after casting

(C) Improve the directional solidification

(D) Provide the support to the core

 

ANSWERS:

1-(A), 2-(B), 3-(C), 4-(B), 5-(A), 6-(B), 7-(B), 8-(B), 9-(D), 10-(C)