Drills are usually made of__________________?
Correct answer: B. High speed steel
- A. Cermets
- B. High speed steel
- C. Alloy steel
- D. Tungsten carbide
Explanation
High-speed steel retains hardness and cutting ability even when drilling generates considerable heat, while also resisting wear. Tungsten carbide is harder but more brittle and is used mainly for special high-speed or abrasive cutting applications.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? support@testustad.com
Practise Chemical Process Principles
2,710 free Chemical Process Principles 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 Chemical Process Principles questions
Silicon crystal can be converted to p-type semi-conductor by doping with__________________?
Tesla metre per ampere (T. m/A) is the unit for the measurement of_______________?
Out of the following, the alloy which has equal percentage of constituents, is__________________?
Which of the following is an example of stress corrosion ?
Silicon percentage in the silicon steel used for electrical appliances/equipments is_________________?
Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is__________________?