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ESE 2019: Manufacturing Quiz-2

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Question 1

The most important function of the cutting fluid is __________.

Question 2

If n = 0.5 and C = 300 for the cutting speed and the tool life relation, when cutting speed is reduced by 25%, the tool life will be increased by

Question 3

Which among the following motion will damages the CAM?
i. uniform velocity
ii. simple harmonic motion
iii. uniform acceleration and retardation
iv. cycloidal motion

Question 4

Consider the following statements:
The material properties which principally determine how well a metal may be drawn are
1. Ratio of yield stress to ultimate stress
2. Rate of increase of yield stress relative to progressive amounts of cold work
3. Rate of work hardening.
Which of these statements is/are correct?

Question 5

The stick-slip motion is found to occur in machine tools slides under certain conditions which are

Question 6

Consider the following statements in respect of oxyacetylene welding:
1. The joint is not heated to a state of fusion
2. No pressure is used
3. Oxygen is stored in steel cylinder at a pressure of 14 MPa.
4. When there is an excess of acetylene used, there is a decided change in appearance of flame.
Which of these statements are correct?

Question 7

Match List-I with List-II and select the correct answer using the codes given below the lists:
List-I
A). Top gate
B). Bottom gate
C). Parting gate
D). Step gate
List-II
1. Heavy and large castings
2. Most widely used and economical
3. Turbulence
4. Unfavorable temperature gradient

Question 8

Direction: The following items consists of two statements; one labeled as ‘Assertion (A)’ and the other as ‘Reason (R)’. You are to examine these two statements carefully and select the answers to these items using the codes given below:
Assertion (A): Plastic deformation is a function of applied stress, temperature and strain rate.
Reason (R): Plastic deformation is accompanied by changes in both the internal and external state of the material.

Question 9

Direction: The following items consists of two statements; one labeled as ‘Assertion (A)’ and the other as ‘Reason (R)’. You are to examine these two statements carefully and select the answers to these items using the codes given below:
Assertion (A): Hot tears occur during forging because of inclusions in the blank material.
Reason (R): Bonding between the inclusions and the parent material is through physical and chemical bonding.

Question 10

Which statement is true for E.D.M
1. M.R.R increases with decreasing resistance.
2. M.R.R increases with decreasing capacitance.
3. M.R.R increases with increasing capacitance.
4. M.R.R increases with optimum spark gap then decreasing with increasing spark gap.
Select the correct answer using the codes given below.
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