Rajasthan Technical Education Second Year Paper 2016 Engineering Materials and Process

Rajasthan Technical Education Second Year Paper 2016 Engineering Materials and Process

Hardnesss of a material is
(a) Resistance of a material to scratch
(b) Resistance of a material to deform
(c) Ability to withstand various forces
(d) Ability to withstand shocks

Which of the following is NOT a point defect ?
(a) Vacancy
(b) Interstitially
(c) Edge dislocation
(d) Schottky

Crystal structure of gamma iron is
(a) Body centered cubic
(b) Face centered cubic
(c) Hexagonal closed packed
(d) Simple cubic

In grey cast iron, carbon is present in the form of
(a) Cementite
(b) Free carbon
(c) Flakes
(d) Nodular

Main alloying elements in stainless steel are
(a) Nickel and Chromium
(b) Nickel and Tungsten
(c) Chromium and Vanadium
(d) Tungsten and Vanadium

Which is not an iron ore ?
(a) Hemetite
(b) Limonite
(c) Siderite
(d) Bauxite

Bronze contains
(a) Copper and Zinc
(b) Copper and tin
(c) Zinc and Tin
(d) Aluminium and Zinc

Which has the minimum melting point from the following ?
(a) Aluminium
(b) Copper
(c) Lead
(d) Zinc

The percentage of copper and zinc in muntz metal respectively
(a) 50,50
(b) 40,60
(c) 60,40
(d) 20,80

Galena is an ore of
(a) Copper
(b) Aluminum
(c) Lead
(d) Tin

Polysters belongs to the group of
(a) Thermo plastics
(b) Thermosetting plastics
(c) Phenolics
(d) Organic fibres

Which of the following a thermoplastic ?
(a) Empoxies
(b) Silicones
(c) PVC
(d) Phenolics

Cores are used in casting to
(a) Strengthen moulding sand
(b) Make desired recess in casting
(c) Support loose pieces
(d) Remove pattern

The material of pattern in investment casting
(a) Thermosetting resin
(b) Plastic
(c) Wood
(d) Wax

Which of the following is NOT a moulding process ?
(a) Thermit process
(b) Centrifugal process
(c) Investment process
(d) Shell process