Top 150+ Solved Foundry Technology MCQ Questions Answer
Q. Which wood can be used for making patterns?
a. Mathogany
b. Pine wood
c. Teak wood
d. any of the above
Q. Which of the following is core hardening process?
a. CO2 process
b. Cold set process
c. Furan system
d. All of the above
Q. Blow holes in castings are due to
a. high moisture content of the sand
b. low permeability of sand
c. excessive fine grains and gas producing ingredients
d. any of the above
Q. When wooden patterns with metallic coating are to be used, the metal sprayed on wooden pattern could be
a. bismuth
b. zinc
c. aluminium
d. any of the above
Q. Shell moulding can be used for
a. producing thin castings
b. better surface finish
c. tolerances of the order of 0.002 mm per mm
d. all of the above
Q. In case of carbondioxide moulding, the binder used is generally
b. coal dust
c. graphite
d. sodium silicate
e. china clay
Q. Aluminium castings are not repaired by
a. inert gas metal arc welding
b. braze welding
c. soldering
d. All of the above
Q. First step in reclaiming the moulding and core sand is
a. addition of moisture
b. reproportioning of binder
c. separation of metal particles
d. any of the above
Q. If ash content of coke used in cupola is high then
a. melting rate will be low
b. castings produced will have blow holes
c. more of flux will be required
d. carbon content of castings will be low
Q. Non-uniform distribution of alloying components, inclusions and impurities in an ingot or casting are known as
a. ageing
b. bleeding
c. innoculation
d. segregation
Q. Clay used for foundry sand should be
a. kaolinite
b. montmorillonite
c. illite
d. any of the above
Q. Phenolic thermo-setting plastics are finding application in pattern making because
a. they do not absorb moisture
b. they are resistant to wear
c. they have all above qualities
d. they are strong
Q. The location of riser least depends on
a. the size of core
c. feasibility of directional solidification
d. the metal to be cast
e. design of casting
Q. In case of cast steel, the contraction allowance will be least for castings having dimensions
b. upto 600 mm
c. 1000 mm to 1800 mm
d. 600 to 1000 mm
e. above 1800 mm