Top 150+ Solved Foundry Technology MCQ Questions Answer
Q. Casting made in relatively simple shapes and designed for subsequent fabrication by rolling, forging etc. are known as
a. rolls
c. pigs
d. ingots
e. chills
Q. Which of the following is used as protective admixture in moulding sand for magnesium castings?
a. Boric acid
b. Sublimed sulphur
c. Fluoric additives
d. Any of the above
Q. For sterite refractory bricks are attacked by
a. basic slags
b. acid slags
c. alkali compounds
d. all of the above
Q. Which of the following is the anti-penetration material introduced in the moulding sand?
a. Coad dust
b. Powdered quartz
c. Black oil
d. all of the above
Q. The property of sand to withstand the high temperature of the molten metal without fusing or breakdown is known as
a. porosity
c. refractoriness
d. cohesiveness
e. adhesiveness
Q. Addition of nickel to cast iron increases
a. hardness
b. corrosion resistance
c. tensile strength
d. all of the above
Q. A casting process which can produce hollow cylinder without use of core is
a. permanent mould casting
b. semi permanent mould casting
c. pressed casting
d. none of the above
Q. The advantage of centrifugal casting is
a. dense castings
b. elimination of cores
c. mass production with reduced rejection possible
d. all of the above
Q. All of the following are non-destructive method of testing the castings EXCEPT
b. Dye penetrant inspection
c. Pressure test
d. Ultrasonic test
e. Tensile test
Q. Which of the following is not necessarily the characteristic of investment casting?
a. No disfiguring parting line as found on castings made by cope and drag methods
b. Extreme dimensional accuracy
c. Excellent surface finish
d. Low cost
Q. On drying the shrinkage of wood is least
b. along the grains
c. across the grains
d. along the direction of tangent to the annular rings
Q. Contraction of metal starts at the end of
b. mushy stage
c. plastic stage
d. liquid stage
e. solid stage
Q. In radiography test on castings which of the following rays are never used?
a. X-rays
b. beta rays
c. gamma rays
d. all of the above
Q. Metal moulds are used in
a. dry sand moulding
b. green sand moulding
c. die casting process
d. loam moulding