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SSC JE 2019-20 Metal Cutting
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Question 1
The basis of slip line field theory in metal cutting is
Question 2
During turning of a metallic rod at a given condition, the tool life was found to decrease from 100 min. to 25 min. When cutting speed was increased from 50 m/min. to 100 m/min. How much will be life of tool if machined at 80 m/min?
Question 3
Negative back rake angle is given for machining of:
Question 4
Tungsten in high speed steel provides
Question 5
The most popular and standard type for all purpose tool steels js 18:4:1 High speed steel (H.S.S), which contains.
Question 6
In the orthogonal cutting of metals _________
Question 7
The factor responsible for the formation of discontinuous chips is
Question 8
The cutting fluid mostly used for machining steel is:
Question 9
The cutting tool has a nose radius of 2 mm, feed rate of 0.04 mm/rev. the theoretical surface roughness in microns is _________.
Question 10
Grinding wheel specified as “C 8 K 5 R 17” in ISO designation. What is the type of bond present in grinding wheel?
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