Multiple Choice Questions (MCQ) on Casting

Use of runner, risers and cores are eliminated in

  1. Centrifuged casting
  2. Die casting
  3. Permanent mould casting
  4. Semi permanent mould casting

(Ans:a)

 

In precision casting, for final casting, we use

  1. metal pattern
  2. non metal pattern
  3. wax pattern
  4. no pattern

(Ans:c)

 

The tolerances in case of lost wax or precision casting is

a. ± 0.001mm                          b. ± 0.005mm                             c. ±0.05mm                         d. ±0.01mm

(Ans:b)

 

Dental castings and turbine blades are produced by

  1. Centrifugal casting
  2. Investment casting
  3. Die casting
  4. Sand casting

(Ans:b)

 

The slurry in Plaster mould casting consists of

  1. 100 parts of plaster and 160 parts of water
  2. 130 parts of plaster and 120 parts of water
  3. 110 parts of plaster and 150 parts of water
  4. 150 parts of plaster and 110 parts of water

(Ans:a)

 

In plaster mould castings, talc is added to the plaster while mixing to

  1. strengthen the mould
  2. fast drying of mould
  3. to prevent cracking of mould
  4. to reduce initial setting time

(Ans:c)

 

The thickness of shells in shell moulding is

a. 0.3 to 0.6mm                            b. 0.6 to 0.9mm                           c. 0.9 to 1.2mm                      d. 1.2 to 1.5mm

(Ans:a)

 

A mould made up of dried silica sand and phenolic resin is used in

  1. Investment moulding
  2. Shell moulding
  3. Centrifugal casting
  4. None of the above

(Ans:b)

 

Petrol engine cylinder are made by

  1. Shell moulding
  2. Plaster mould casting
  3. Investment casting
  4. Centrifugal casting

(Ans:a)

 

In which of the following process, the metal is rapidly chilled to the point of solidification

  1. Centrifugal casting
  2. Investment casting
  3. Continuous casting
  4. Die casting

(Ans:c)

 

Billets and slabs are made by

  1. Centrifugal casting
  2. Continuous casting
  3. Die casting
  4. Slush casting

(Ans:b)