In cold working of metal as compared to its hot working____________________?
Correct answer: C. Appreciable strain hardening is produced
- 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
Explanation
Cold working plastically deforms metal below its recrystallisation temperature, generating dislocations that cause appreciable strain hardening. Consequently, strength and hardness rise while ductility generally decreases.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Plant Design and Economics
803 free Plant Design and Economics MCQs from Chemical Engineering, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Chemical Engineering questions like this
Chemical Engineering is on this paper prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for it.
More Plant Design and Economics questions
Spark plugs are made of______________________?
The crystal structure of most of the common metals is_____________________?
Cast iron is having very high ___________________?
'Age hardening' of duralumin is due to____________________?
The softest material just next to talc in the Mho's scale is___________________?
Which of the following comprises of hydrocarbons ?