Metallurgical Testing and Inspection MCQ Questions and Answers

1

Fatigue life is expected to increase by

A) increasing the size of the sample B) smooth polishing of the surface of the sample C) having compressive residual stresses at the surface D) having tensile residual stresses at the surface

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Answer & Solution

Answer: Option C

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2

Which of the following is a function of a developer

A) Providing a contrasting background for visible dye indications B) Making the penetrant water washable C) Penetrating into discontinuities open to the surface D) Dissolve organic soils on the test piece surface

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Answer & Solution

Answer: Option A

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3

With an increase in temperature, hardness of material . . . . . . . . and ductility . . . . . . . .

A) Increases, increases B) Increases, decreases C) Decreases, increases D) Decreases, decreases

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Answer & Solution

Answer: Option C

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4

A brale indentor used in Rockwell hardness test has the following geometry and material.

A) Square based diamond pyramid with 136° included angle B) Conical shape steel with 120° apex angle C) Conical shaped diamond with 120° apex angle D) 10 mm diameter hardened steel ball

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Answer & Solution

Answer: Option C

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5

The ductile fracture occurs in the forms of

A) Intergranular granular B) Intra granular C) Catastrophically D) None of these

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Answer & Solution

Answer: Option D

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6

It is observed that the tensile flow stress of an aluminium alloy decreases on increasing the strain rate during the test. The possible magnitude for the strain rate sensitivity of the alloy is

A) 0 B) 0.01 C) 0.1 D) -0.06

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Answer & Solution

Answer: Option C

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7

For a constant force, a rope breaks due to stress. Which of the following is useful to reduce the stress?

A) Increase the length of the rope B) Apply small force C) Increase the cross sectional area of the rope D) Use a different material of rope

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Answer & Solution

Answer: Option C

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8

For HRF scale load and indenter are used

A) 60kgf and Ball indenter of 1/16" diameter B) 100kgf and Ball indenter of 1/16" diameter C) 150kgf and Ball indenter of 1/16" diameter D) 100kgf and Ball indenter of 1/8" diameter

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Answer & Solution

Answer: Option A

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9

Which of the following is the most common method of packaging film?

A) Individual sheets for use in cassettes B) Rolls C) Pre-packaged ('day-pack') D) All of the above

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Answer & Solution

Answer: Option D

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10

The permeability of a material describes

A) The ease with which it can be magnetized B) The depth of the magnetic field in the part C) The length of time required to demagnetize it D) The ability to retain the magnetic field

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Answer & Solution

Answer: Option A

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Metallurgical Testing and Inspection MCQ Questions and Answers | Metallurgical Engineering