Question: Hardness of steel is increased by adding sulphur, lead and phosphorus.
[A].Yes
No
[A].
[B].
Answer: Option B
Explanation:
No answer description available for this question.
Mechanical Engineering
Corrosion resistance of steel is increased by adding nickel and chromium.
Question: Corrosion resistance of steel is increased by adding nickel and chromium.
[A].Agree
Disagree
[A].
[B].
Answer: Option A
Explanation:
No answer description available for this question.
Chromium when added to steel __________ the tensile strength.
Question: Chromium when added to steel __________ the tensile strength.
[A].does not effect
decreases
increases
[A].
[B].
[C].
Answer: Option C
Explanation:
No answer description available for this question.
A small percentage of boron is added to steel in order to
Question: A small percentage of boron is added to steel in order to
[A].increase hardenability
reduce machinability
increase wear resistance
increase endurance strength
[A].
[B].
[C].
[D].
Answer: Option A
Explanation:
No answer description available for this question.
In high speed steels, manganese is used to tougher the metal and to increase its
Question: In high speed steels, manganese is used to tougher the metal and to increase its
[A].yield point
critical temperature
melting point
hardness
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.
A steel alloy containing 36% nickel is called
Question: A steel alloy containing 36% nickel is called
[A].stainless steel
high speed steel
invar
heat resisting steel
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
A carbon steel having Brinell hardness number 100 should have ultimate tensile strength closer to
Question: A carbon steel having Brinell hardness number 100 should have ultimate tensile strength closer to
[A].100 N/mm2
200 N/mm2
350 N/mm2
1000 N/mm2
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
In low carbon steels, presence of small quantities of sulphur improves
Question: In low carbon steels, presence of small quantities of sulphur improves
[A].weldability
formability
machinability
hardenability
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?
Question: Which of the following when used in ordinary low carbon steels, makes the metal ductile and of good bending qualities?
[A].Sulphur
Phosphorus
Manganese
Silicon
[A].
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.
Question: In low carbon steels, __________ raises the yield point and improves the resistance to atmospheric corrosion.
[A].sulphur
phosphorus
manganese
silicon
[A].
[B].
[C].
[D].
Answer: Option B
Explanation:
No answer description available for this question.