Multiple Choice Questions (MCQ) on Casting

In die casting machines, the problem of rapid oxidation of the steel dies at high temperature is overcome by

  1. using better die material
  2. By circulating water through plates adjacent to the dies
  3. Using metal in semi liquid or plastic state

Which of the above are true?

a. only ii                        b. i & ii                      c. ii & iii                      d. i, ii & iii

(Ans:d)

 

To overcome the problems like blow holes in casting we use

  1. Direct air pressure type die casting machine
  2. Submerged plunger type casting machine
  3. Hot chamber die casting machine
  4. Vacuum die casting machine

(Ans:d)

 

Which of the following is true for die used in die casting machine?

  1. One part of die is stationery and other is moveable
  2. Both part of die are stationery
  3. Both part of die are moveable
  4. None of the above

(Ans:a)

 

In die casting, which of the following keeps the two halves of die in proper alignment?

a. Dowel pins                                        b. Ejector pins                            c. Chaplets                          d. Fillets

(Ans:a)

 

To produce non ferrous castings having mechanical properties comparable with forgings, the following method is used

  1. slush casting
  2. squeeze casting
  3. semi permanent mould casting
  4. permanent mould casting

(Ans:b)

 

No core is needed to form hole in

  1. semi permanent mould casting
  2. permanent mould casting
  3. die casting
  4. centrifugal casting

(Ans:d)

 

Cast iron pipes and cylindrical barrels are produced in

  1. true centrifugal casting
  2. semi centrifugal casting
  3. centrifuged casting
  4. die casting

(Ans:a)

 

Core is used in the following casting method

  1. slush casting
  2. semi centrifugal casting
  3. true centrifugal casting
  4. none of the above

(Ans:b)

 

Which method is used for non symmetrical castings?

  1. true centrifugal casting
  2. semi centrifugal casting
  3. centrifuged casting
  4. none of the above

(Ans:c)

 

Fly wheels, track wheels and gears can be produced by

  1. true centrifugal casting
  2. semi centrifugal casting
  3. centrifuged casting
  4. none of the above

(Ans:b)