Mechanical Engineering Objective | Mechanical Engineering Online Test

Mechanical Engineering Objective

Mechanical Engineering Objective

1. The impact strength of an material is an index of its

a. Toughness

b. Tensile strength

c. Capability of being cold worked

d. Hardness

e. Fatigue strength

Answer:

Toughness

2. If a material expands freely due to heating, it will develop

a. Thermal stress

b. Tensile stress

c. Bending

d. Compressive stress

e. No stress

Answer:

No stress


3. Ductility of material can be defined as

a. Ability to undergo large permanent deformation in compression

b. Ability to recover its original form

c. Ability to undergo large permanent deformation in tension

d. All of the above

e. None of the above

Answer:

Ability to undergo large permanent deformation in compression


4. Cast iron is characterized by minimum of following % of carbon

a. 0.2%

b. 0.8%

c. 1.3%

d. 2%

e. None of the above

Answer: 

2%


5. Inconel is an alloy of

a. Nickel, chromium and iron

b. Nickel and copper

c. Nickel and chromium

d. Nickel and zinc

e. Nickel and lead

Answer:

Nickel, chromium and iron


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