In cold working of metal as compared to its hot working

by
Question: In cold working of metal as compared to its hot working
[A].

cracks and blow holes are eliminated.

[B].

ductility and impact strength improves.

[C].

appreciable strain hardening is produced.

[D].

yield stress, hardness and fatigue strength is not at all affected.

Answer: Option D

Explanation:

No answer description available for this question.

P started from his house towards west. After walking a distance of 25 m. He turned to the right and walked 10 m. He then again turned to the right and walked 15 m. After this he is to turn right at 135o and to cover 30 m. In which direction should he go?

by
Question: P started from his house towards west. After walking a distance of 25 m. He turned to the right and walked 10 m. He then again turned to the right and walked 15 m. After this he is to turn right at 135o and to cover 30 m. In which direction should he go?
[A].

West

[B].

South

[C].

South-West

[D].

South-East

Answer: Option C

Explanation:

Hence he should go in the South-West direction.

Heating the hypoeutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called

by
Question: Heating the hypoeutectoid steels to 30°C above the upper critical temperature line, soaking at that temperature and then cooling slowly to the room temperature to form a pearlite & ferrite structure is called
[A].

tempering

[B].

hardening

[C].

annealing

[D].

normalising

Answer: Option C

Explanation:

No answer description available for this question.

Young’s modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby

by
Question: Young’s modulus of elasticity of a material is the slope of the initial linear portion of the stress-strain curve. It decreases ap-preciablyby
[A].

alloying additions

[B].

heat treatment

[C].

cold work

[D].

increasing temperature

Answer: Option B

Explanation:

No answer description available for this question.

In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)

by
Question: In troposphere (the weather domain), the temperature ‘t’ at height ‘h’ above the sea level in metres is given by (where, temperature at sea level is 15°C and t is in °C.)
[A].

t = 15 – 0.0065 h

[B].

t = 15 + 0.0065 h

[C].

t = 0.0035 h – 15

[D].

t = 15 – 0.0035 h

Answer: Option A

Explanation:

No answer description available for this question.