Metallurgy CEPTAM Question paper
CEPTAM Metallurgy Model Question Paper
DRDO CEPTAM Sample paper – STA Metallurgy
CEPTAM 10 Senior Technical Assistant online application will start from 3rd Sept 2022. You may apply on or before 23rd Sept 2022.
1.Mild steel is an alloy of iron and carbon with percentage of carbon ranging from
(a) up to 0.2%
(b) 0.15–0.3
(c) 0.3–0.5
(d) above 0.5.
4. Brass is an alloy of
(a) copper and zinc
(b) tin and zinc
(c) copper and tin
(d) copper and Al.
3.Heat treatment that requires heating a part below A1 temperature, i.e. between 550°C and 650° is
called as
(a) hardening
(b) normalizing
(c) process annealing
(d) full annealing
4. Example for ferri-magnetic materials
(a) salts of transition elements
(b) rare earth elements
(c) transition metals
(d) Ferrites
5.Proof stress corresponds to
(a) elastic limit
(b) lower yield point
(c) higher yield point
(d) a specified strain
6. Which combination of alloying increases ductility transition temperature?
(a) Si and Mn
(b) C and Fe
(c) C and O2
(d) C and Mn
7. Which one is the wrong anode-cathode combination
(a) Zinc-Iron
(b) Nickel-Titanium
(c) Iron-Tin
(d) Silver-Zinc
8.Malleability of a material can be defined as
(a) ability to undergo large permanent deformations in compression
(b) ability to recover
(c) ability to undergo large permanent deformations in tension
(d) all of the above
9.Heat capacity of most materials is approximately equal to ________.
(a) R
(b) 2R
(c) 3R
(d) R/2
10.Time dependent permanent deformation is called ________________.
(a) Plastic deformation
(b) Elastic deformation
(c) Creep
(d) Anelastic deformation
Ans. 1 (b) 2 (a) 3 (c) 4 (d) 5 (d) 6 (c) 7 (d) 8 (a) 9 (c) 10 (c)
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