A. shot peening

B. nitriding of surface

C. under-stressing

D. cold working

B. may increase or decrease depending on the characteristics of liquid

C. unpredictable

D. increase

E. remain unaffected

A. silicon, aluminium, titanium

B. vanadium, aluminium

C. chromium, nickel

E. lubricants

A. surface tension

C. cohesion

D. osmosis

E. co-efficient of viscosity

A. at which crystals are destroyed on heating

B. at which crystals first start forming from molten metal when it is cooled

C. at which crystals grow bigger in size

D. at which change of allotropic form takes place

A. cast iron pipes

B. piston I.C. engine

C. cycle chains

E. flywheel of steam engine

B. alloy of tin, lead and cadmium

C. 88% copper and 10% tin and rest zinc

D. none of the above

E. malleable iron and zinc

A. no fixed relationship

B. unpredictable behaviour

C. linear

E. plastic

A. made by adding carbon in steel

B. extensively used for making cutting tools

C. refined from cast iron

D. extremely brittle

A. iron, nickel and copper

B. iron, aluminium and magnesium

C. iron, lead and tin

D. copper, zinc and antimony

B. nickel, copper, etc

C. all of the above

D. aluminium, copper etc

E. none of the above

A. zinc, tin, lead

B. none of the above

C. nickel, molybdenum

D. nickel, lead and tin

A. obtaining cyanide salts

B. dipping steel in cyanide bath

C. making corrosion resistant steel

D. reacting steel surface with cyanide salts

A. silicon and sulphur

B. sulphur, graphite and aluminium

C. phosphorous and aluminium

E. none of the above

B. 87% Sn, 4% Cu, 8% Sb, 1% Al

C. 90% Sn, 2% Cu, 4% Sb, 2% Bi, 2% Mg

D. none of the above

E. 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg

A. high resistance to rusting and corrosion

B. easily weldable characteristics

C. ability of hold protective coating

E. high ductility

B. contents of alloying elements

C. amount of carbon it contains

D. the quality of ore from which it is made

E. method of fabrication

A. distance

B. pressure

C. level

D. flow

A. a low percentage of graphite

B. graphite as its basic constituent of composition

C. none of the above is true

D. a very high percentage of graphite

A. gun metal

C. solder admiralty

D. fusible metal

E. phosphor bronze

A. german silver

B. mild steel

C. cast iron

E. lead

A. stainless steel

C. cast iron

D. high carbon steel

E. mild steel

A. paramagnetic

B. ferroelectric

C. none of the above

D. dielectric

A. room temperature

B. near melting point

C. none of the above

E. between 1400C and 1539C

A. none of the above

C. nickel

D. silicon

E. manganese

A. compressive strength

B. carbon content

D. surface finish

E. hardness

B. nodular aggregates of graphite

C. flakes

D. free carbon

E. cementite

A. induction hardening

C. flame hardening

D. cyaniding

E. nitriding

A. cubic structure

B. hexagonal close packed

D. orthorhombic crystal

E. face centred cubic

A. relieving of stresses throughout a component

B. martenistic structure

C. carburised structure

E. lamellar layers of carbide distributed throughout the structure

A. remains constant

B. decreases

D. increases first up to certain limit and then decreases

E. unpredictable

A. stages at which further heating does not increase temperature for some time

C. stages at which properties do not change with increase in temperature

D. there is nothing like points of arrest

E. none of the above

A. 1% phosphorous

C. 0.5% of phosphorous

D. 5% phosphorous

E. 2.5% phosphorous

A. low carbon steel

B. cast iron

D. high carbon steel

E. aluminium

A. precipitation

B. heat treatment

C. austempering

E. recrystallisation

A. silver and gold

B. silver and some impurities

C. refined silver

D. nickel and copper

A. non-plastic deformation

C. plastic deformation

D. endurance

E. fatigue

A. do not move

B. in circular motion

D. in a haphazard way

E. in a random manner

A. face centred cubic

B. hexagonal close packed

D. cubic structure

E. orthorhombic crystal

A. 85-92% copper and rest tin with little lead and nickel

C. 70% copper and 30% tin

D. 90% copper and 10% tin

E. 70-75% copper and rest tin

B. promotes retention of austenite

C. promotes decarburisation

D. increases toughness

E. provides high hot hardness

A. none of the above

B. iron scrap and zinc

C. alloy of tin, lead and cadmium

D. 63 to 67% nickel and 30% copper

B. 3 meters of water column

C. 7 meters of water column

D. 2 meters of water column

E. 5 meters of water column

A. increasing hardness throughout

C. hardening core

D. inducing hardness by continuous process

E. heating and cooling rapidly

A. the flow is steady

B. size and cross section change uniformly along length

C. flow occurs at constant fate

E. the flow is streamline

A. improvement of corrosion resistance

B. improving machinability

D. none of the above

E. improvement of casting characteristics

A. 1712C

B. 1489C

C. 1131C

E. 1601C

B. magnesium alloys

C. chromium alloys

D. none of the above

E. magnetic steel alloys

B. Froude number

C. Reynolds number

D. Mach number

E. none of the above

B. center of pressure

C. water surface

D. none of the above

E. center of buoyancy