Manufacturing Technology (3151912) MCQs

MCQs of Foundary Technology

Showing 71 to 80 out of 125 Questions
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71.

Which of the following is not a type of core according to their position?

(a)

Horizontal 
(b)

Vertical 
(c)

Inclined  
(d)

Balanced
Answer:

Option (c)

72.

Which of the following is not true about core chaplet used in casting?

(a)

It is a metal location piece
(b)

It prevents core in shifting its position
(c)

It gives extra support to core
(d)

It is removed after casting
Answer:

Option (d)

73.

The function of cores in casting is to

(a)

 form extended parts 
(b)

form internal cavities
(c)

used for directional solidification
(d)

none of the above
Answer:

Option (b)

74.

Which of the following provides an added projection on a pattern and forms a seat to support and locate the core in the mould

(a)

Mould print
(b)

Core print
(c)

Drag
(d)

Cope
Answer:

Option (b)

75.

Cores are used to

(a)

Make desired recess in castings
(b)

Strengthen moulding sand
(c)

Support loose pieces
(d)

"Remove pattern easily
Answer:

Option (a)

76.

Core prints are used to

(a)

Strengthen core
(b)

 Form seat to support and hold the core in place 
(c)

Fabricate core
(d)

All of the above
Answer:

Option (b)

77.

Sprue in casting refers to.......

(a)

Gate
(b)

Runner
(c)

Riser
(d)

Vertical passage
Answer:

Option (d)

78.

In casting, gating ratio is defined as the ratio of

(a)

sprue area : total area : total gate area 
(b)

 total gate area : sprue area : total area
(c)

total area : sprue area : total gate area    
(d)

total area : total gate area : sprue area
Answer:

Option (a)

79.

Which of the following helps in entrapping impurities and debris flowing towards the casting?

(a)

sprue well       
(b)

sprue 
(c)

choke
(d)

skimbob
Answer:

Option (d)

80.

Chills are metal inserts of steel that are placed at appropriate locations in the mould walls to

(a)

Decrease the freezing rate
(b)

Increase the freezing rate
(c)

Help directional solidification 
(d)

Prevent directional solidification
Answer:

Option (c)

Showing 71 to 80 out of 125 Questions
5 6 7 8 9 10