Manufacturing Technology (3151912) MCQs

MCQs of Foundary Technology

Showing 51 to 60 out of 125 Questions
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51.

The machining allowance provided to ferrous castings for making small and average sized casting is

(a)

1.5mm   
(b)

3mm 
(c)

4.5mm
(d)

6mm
Answer:

Option (b)

52.

The tapper provided to the pattern for its removal is known as

(a)

shaking allowance
(b)

distortion allowance
(c)

machining allowance
(d)

draft allowance
Answer:

Option (d)

53.

Least shrinkage allowance is provided in the case of following

(a)

 Brass
(b)

Aluminium
(c)

Cast iron
(d)

Steel
Answer:

Option (a)

54.

The draft allowance on the patterns is provided in order to

(a)

Provide good draft of air in the sand moulding
(b)

Provide for distortion that Might take place
(c)

Remove the pattern easily from the moulding
(d)

Increase the strength of the mould walls
Answer:

Option (c)

55.

The draft allowance on metallic pattern in comparison to wooden ones is

(a)

More
(b)

Same
(c)

Less 
(d)

More/less depending on size
Answer:

Option (c)

56.

 Which of the following materials has more shrinkage allowance

(a)

Cast iron
(b)

Brass
(c)

 Lead
(d)

Aluminium alloy
Answer:

Option (c)

57.

Shrinkage allowance is made by

(a)

Adding to external and internal dimensions
(b)

 Subtracting from external and internal dimensions
(c)

Subtracting from external dimensions and adding to internal dimensions
(d)

Adding to external dimensions and subtracting from internal dimensions
Answer:

Option (d)

58.

For gray cast iron, the pattern shrinkage allowance is of the order of

(a)

2 to 5 mm/m
(b)

1 to 5 mm/m
(c)

7 to 10.5 mm/m 
(d)

10.5 to 13.5 mm/m
Answer:

Option (c)

59.

Surfaces to be machined are marked on the pattern by the following colour

(a)

Black
(b)

Yellow
(c)

 Red 
(d)

Blue
Answer:

Option (c)

60.

In general, the draft on castings is of the order of

(a)

1-5 mm/m
(b)

5-10 mm/m
(c)

10-15 mm/m
(d)

15-20 mm/m
Answer:

Option (c)

Showing 51 to 60 out of 125 Questions
3 4 5 6 7 8