Question
a.
heated from 30° C to 50° C above the upper critical temperature and then cooled in still air
b.
heated from 30° C to 50° C above the upper critical temperature and then cooled suddenly in a suitable cooling medium
c.
heated from 30° C to 50° C above the upper critical temperature and then cooled slowly in the furnace
d.
heated below or close to the lower critical temperature and then cooled slowly
Posted under Mechanical Engineering
Interact with the Community - Share Your Thoughts
Uncertain About the Answer? Seek Clarification Here.
Understand the Explanation? Include it Here.
Q. In process annealing, the hypo-eutectoid steel is
Similar Questions
Explore Relevant Multiple Choice Questions (MCQs)
Q. Delta-iron occurs between the temperature range of
View solution
Q. According to Indian standard specifications, SG 400/15 means
View solution
Q. White cast iron has
View solution
Q. Iron-carbon alloys containing carbon __________ 4.3% are known as hyper-eutectic cast irons.
View solution
Q. Which of the following metal shrinks most from molten state to solid state?
View solution
Q. A steel containing ferrite and pearlite is
View solution
Q. The defect which takes place due to imperfect packing of atoms during crystallisation is known as
View solution
Q. The upper critical point varies according to the carbon content in steel.
View solution
Q. A coarse grained steel
View solution
Q. Cast iron is a ductile material.
View solution
Q. Manganese is added in low carbon steel to
View solution
Q. Beryllium bronze contains
View solution
Q. The portion of the blast furnace below its widest cross-section is called
View solution
Q. Gamma-iron occurs between the temperature range of
View solution
Q. Macro-structure of a material is, generally, examined by
View solution
Q. Aluminium has low density and addition of silicon improves its fluidity and therefore, its castability.
View solution
Q. Which of the following property is desirable for materials used in tools and machines?
View solution
Q. Babbit metal is a
View solution
Q. The metal suitable for bearings subjected to heavy loads, is
View solution
Q. The compressive strength of cast iron is __________ that of its tensile strength.
View solution
Recommended Subjects
Are you eager to expand your knowledge beyond Mechanical Engineering? We've handpicked a range of related categories that you might find intriguing.
Click on the categories below to discover a wealth of MCQs and enrich your understanding of various subjects. Happy exploring!