Explore topic-wise MCQs in Mechanical Metallurgy.

This section includes 18 Mcqs, each offering curated multiple-choice questions to sharpen your Mechanical Metallurgy knowledge and support exam preparation. Choose a topic below to get started.

1.

The gutter flash is associated with which of following metalworking process?

A. Rolling
B. Forging
C. Extrusion
D. Swaging
Answer» C. Extrusion
Discussion
2.

The residual stress in the material after metalworking can be detected by which of the following method?

A. Hardness
B. Metallographic
C. Scanning electron microscopy
D. X-ray analysis
Answer» E.
Discussion
3.

The LPG cylinder is manufactured by which of the following metal working process?

A. Casting
B. Rolling
C. Spinning
D. Forging
Answer» E.
Discussion
4.

In which of the following process, the container wall friction is absent?

A. Direct extrusion
B. Impact extrusion
C. Hydrostatic extrusion
D. Tube drawing
Answer» D. Tube drawing
Discussion
5.

In deep drawing to obtain the best result, which of the following property should be minimum?

A. Ductility
B. Plasticity
C. Planer anisotropy
D. Plastic anisotropy
Answer» D. Plastic anisotropy
Discussion
6.

If the width is decreased by 20% and length is elongated by 30%. Find the plastic strain ratio of the workpiece?

A. 4.25
B. 5.71
C. 2.32
D. 1.025
Answer» C. 2.32
Discussion
7.

The plastic strain ratio is defined as the _______________ (where Wi, Wf is initial and final width of work piece, Li, Lf is initial and final length of work piece).

A. ln(Wi/Wf)
B. ln(Wi/Wf)/ln(Li/Lf)
C. ln(Wi/Wf)/ln(LfWf/LiLf)
D. ln[(Wi/Wf)/(LfWf/LiLf)]
E. .a) ln(Wi/Wf)b) ln(Wi/Wf)/ln(Li/Lf)c) ln(Wi/Wf)/ln(LfWf/LiLf)d) ln[(Wi/Wf)/(LfWf/LiLf)]
Answer» D. ln[(Wi/Wf)/(LfWf/LiLf)]
Discussion
8.

The dynamic recrystallization occurs at high dislocation density whereas the dynamic recovery occurs at lower dislocation density.

A. True
B. False
Answer» B. False
Discussion
9.

The stress-strain curve for hot worked metal which has undergone dynamic recrystallization is _______

A. A
B. B
C. C
D. D
Answer» D. D
Discussion
10.

The stress-strain curve for hot worked metal which has undergone dynamic recovery with increasing strain is _______

A. A
B. B
C. C
D. D
Answer» B. B
Discussion
11.

As the strain rate of deformation increases, the temperature of the workpiece due to internal heating ____________

A. increases
B. decreases
C. remains constant
D. depends on the coefficient of friction
Answer» B. decreases
Discussion
12.

In which of the following metal working process, the temperature is kept highest?

A. Subcritical working
B. Cold working
C. Warm working
D. Hot-working
Answer» E.
Discussion
13.

In which of the following metalworking process, the control on grain size is maximum?

A. Cold working
B. Hot-working
C. Cold-annealed-cold working
D. Cold-annealed-hot working
Answer» D. Cold-annealed-hot working
Discussion
14.

Hot-working is generally carried out in multiple steps whereas the cold working is carried out in single step.

A. True
B. False
Answer» C.
Discussion
15.

In a hot worked piece of metal, the grain size in the interior of the metal is __________ the outer surface.

A. larger than
B. smaller than
C. equal to
D. depend on temperature
Answer» B. smaller than
Discussion
16.

The dimension tolerance allowances are much more significant for hot working process compared to cold working process.

A. True
B. False
Answer» B. False
Discussion
17.

Which of the following shows the correct hot working behavior of the metal?

A. A
B. B
C. C
D. D
Answer» C. C
Discussion
18.

In which of the following process, the deformation and recovery take place together?

A. Cold working
B. Warm working
C. Hot-working
D. Every process it does occur
Answer» D. Every process it does occur
Discussion