Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by _____________ have residual stresses ?

Question: With increase in carbon percentage in steel, its
[A].

yield stress decreases.

[B].

elongation percent increases.

[C].

tensile strength increases.

[D].

impact strength increases.

Answer: Option C

Explanation:

No answer description available for this question.

Question: Matte smelting is used in the extraction of
[A].

lead

[B].

zinc

[C].

aluminium

[D].

copper

Answer: Option D

Explanation:

No answer description available for this question.

Question: In continuous casting process, graphite moulds are used with a view to providing
[A].

heat resisting medium.

[B].

self lubricating qualities.

[C].

non-wetting surfaces.

[D].

chilling effect.

Answer: Option B

Explanation:

No answer description available for this question.

Question: Which of the following welding processes employs the highest welding temperature ?
[A].

Arc welding

[B].

Gas welding

[C].

Thermit welding

[D].

Resistance welding

Answer: Option D

Explanation:

No answer description available for this question.