Practice Testing Materials Exam Multiple Choice Questions with Answers Quiz-1

Q.1.

Which of the following is a dynamic hardness test?

a) Brinell
b) Poldi
c) Knoop
d) Vickers

Explanation

Q.2.

What is the standard height of impact for shore test?

a) 125 mm
b) 250 mm
c) 500 mm
d) 750 mm

Explanation

Q.3.

What is a weight of hammer in shore test?

a) 2.0 gm
b) 2.3 gm
c) 2.4 gm
d) 3.0 gm

Explanation

Q.4.

As the height of rebound enhances the material’s hardness ___________

a) Increases
b) Decreases
c) First Increases and then decreases
d) Remains constant

Explanation

Q.5.

Specimen less than 1 kg must be clamped because of ________

a) Elastic recovery
b) Penetration
c) Inertial effect
d) Personal error

Explanation

Q.6.

What is a disadvantage of shore test?

a) Very slow
b) Deep indentation
c) Clamping problem
d) Heavy machinery

Explanation

Q.7.

Which test should be preferred for finished lathe machine bed?

a) Brinell
b) Poldi
c) Shore
d) Rockwell

Explanation

Q.8.

What is the height of Poldi apparatus?

a) 10 mm
b) 100 mm
c) 150 mm
d) 250 mm

Explanation

Q.9.

What is the disadvantage of Poldi hardness test?

a) Expensive
b) Not portable
c) Not accurate
d) Can’t perform on heavy machinery

Explanation

Q.10.

Poldi hardness test gives a value of ________ also along with dynamic hardness.

a) Yield strength
b) Tensile strength
c) Toughness
d) Young’s modulus

Explanation

Q.11.

Tensile strength is given in tonnes per square inch in Poldi test.

a) True
b) False

Explanation

Q.12.

Hardness of heavy components can’t be measured by Poldi test.

a) True
b) False

Explanation

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