Mechanical Engineering - Workshop Technology

46. 

Galvanising is a

A. zinc diffusion process
B. process of coating zinc by hot dipping
C. process used for making thin phosphate coating on steel
D. none of the above

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

47. 

The ferrous metals require more machining allowance than non-ferrous metals.

A. True
B. False

Answer: Option A

Explanation:

No answer description available for this question. Let us discuss.

48. 

In a four high rolling mill, there are four rolls out of which

A. one is working roll and three are backing up rolls
B. two are working rolls and two are backing up rolls
C. three are working rolls and one is backing up roll
D. all of the four are working rolls

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

49. 

When a pattern is made in three parts, the bottom part is known as a cope.

A. True
B. False

Answer: Option B

Explanation:

No answer description available for this question. Let us discuss.

50. 

In __________ welding, the weld may be made either from left to right or from right to left.

A. fore-hand
B. back-hand
C. vertical

Answer: Option C

Explanation:

No answer description available for this question. Let us discuss.

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