Q.1

The path and movements followed by men, materials & equipments in executing the activities is indicated by the

  • travel charts
  • man-machine charts
  • string diagram
  • flow diagram
Q.2

Pick the odd man out.

  • Austempering
  • Martempering
  • Cyniding
  • Parkerizing
Q.3

__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

  • Collar
  • Flanged
  • Bell and Spigot
  • Expansion
Q.4

Silicon percentage in silicon steel used for electrical equipments is about

  • 1
  • 4.0
  • 8
  • 14
Q.5

Pick out the wrong statement.

  • Dry bulb temperature, wet bulb temperature & dew point are the same in case of saturated air.
  • Dew point is reached by cooling the humid air at constant moisture content.
  • Heating of humid air is done for its dehumidification.
  • none of these.
Q.6

Ceramic compounds as compared to metallic compounds

  • crystallise faster.
  • resist greater tensile stress at room temperature.
  • have higher melting temperature.
  • are better conductor of electricity at higher temperature.
Q.7

Which of the following is not an ore of iron ?

  • Chalcopyrite
  • Magnetite
  • Hemetite
  • Limonite
Q.8

There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.

  • one
  • two
  • three
  • none of these
Q.9

Which of the following is prone to cup and cone fracture ?

  • Cast iron
  • Soft brass
  • Round specimen of ductile metal.
  • Flat tensile specimen of ductile metal.
Q.10

Holes for rivetting purposes should be preferably made by

  • cutting torch
  • drilling
  • punching
  • none of these
Q.11

Shock resisting steels should possess high

  • hardness
  • toughness
  • tensile strength
  • wear resistance
Q.12

In the acid Bessemer process, the hot metal should have the following com-positon.

  • S < 0.05% and P < 0.05%.
  • S < 0.05% and P < 1.5%.
  • S < 0.05% and P > 1.5%.
  • S > 1.5% and P < 0.05%.
Q.13

In an amorphous material, atoms defy any definite atomic structure and exist in random pattern just like in liquid. Which of the following is an amorphous material ?

  • Tin
  • Lead
  • Zinc
  • Glass
Q.14

Calorific value of __________ are almost same.

  • lignite & anthracite coal
  • lignite & coal gas
  • petrol & diesel
  • coal gas & natural gas
Q.15

Matte smelting is used in the extraction of

  • lead
  • zinc
  • aluminium
  • copper
Q.16

Percentage of differential pressure lost in a venturimeter with a tapering ofmay be about

  • 1
  • 10
  • 25
  • 50
Q.17

Lap joints are preferred over butt joints in soldering/brazing, because these joints are

  • weaker in tension but stronger in shear.
  • weaker in shear but stronger in tension.
  • stronger in both shear and tension.
  • The lap joints are easily made.
Q.18

Which of the following is not a ferromagnetic material ?

  • Nickel
  • Cobalt
  • Aluminium
  • Iron
Q.19

In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :

  • Jet of water at high pressure.
  • Blast of air.
  • Mixture of water and air.
  • Rain of molten lead.
Q.20

Batch process is preferred over continuous process, when the

  • product yields and quality can not be achieved in continuous process, because of long residence time.
  • sales demand of product is not steady.
  • same equipment can not be used for several processes of the same nature.
  • all (a), (b) & (c)
Q.21

Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.

  • horizontal
  • vertical
  • inclined
  • any
Q.22

A colloidal system, in which a liquid is dispersed in gas is called a/an

  • gel
  • aerosol
  • foam
  • emulsion
Q.23

What is the range of tempering temperature (°C) for most of the materials ?

  • 75-100
  • 200-300
  • 350-450
  • 500-600
Q.24

Out of the following, the alloy which has equal percentage of constituents, is

  • white metal
  • gun metal
  • duralumin
  • constanton
Q.25

Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is

  • alumina
  • platinum
  • vanadium pentoxide
  • iron oxide
Q.26

The most commonly used material for sewers for carrying sewage in the normal situation is

  • asbestos cement
  • stainiess steel
  • stoneware
  • cast iron
Q.27

Pressure exerted by a liquid depends upon its

  • surface tension
  • density
  • viscosity
  • buoyancy
Q.28

Which is the most lethal weapon ?

  • Atom (fusion) bomb
  • Hydrogen bomb
  • Cobalt bomb
  • Neutron bomb
Q.29

One of the methods of purification of leach liquor is ion exchange, which involves

  • exchange between two liquid phases.
  • exchange between a gaseous phase and a liquid phase.
  • exchange between a liquid phase and an organic resin phase.
  • exchange between a solid phase and a gas phase.
Q.30

Fatigue life is expected to increase by

  • increasing the size of the sample.
  • smooth polishing of the surface of the sample.
  • having compressive residual stresses at the surface.
  • having tensile residual stresses at the surface.
Q.31

Which of the following does not come under the category of electrochemical corrosion ?

  • Corrosion in organic liquids.
  • Atmospheric corrosion in moist gas or air.
  • Soil corrosion as in the case of underground pipes.
  • Corrosion in sea water and molten metals.
Q.32

Even though heat transfer co-efficients in boiling liquids is large, use of fins is advantageous, when the entire surface is exposed to __________ boiling.

  • film
  • nucleate
  • transition
  • all modes of
Q.33

In Newton's law of viscosity, which states that the shear stress is proportional to the __________ Co-efficient of viscosity is called dynamic or absolute viscosity(where, V = velocity, Vg = velocity gradient ).

  • V2
  • 1/V2
  • 1/Vg
  • Vg
Q.34

Which of the following pairs is not correctly matched ?

  • Uranium - 233 : Fertile material.
  • Bindingenergy : Mass defect.
  • Scattering: Absorption cross-section.
  • Number of nucleons : Mass number.
Q.35

Compressed dry air is used as the cutting fluid, while machining

  • steel
  • cast iron
  • aluminium
  • none of these
Q.36

Colour comparator is used to measure the

  • pH value
  • electrode potential
  • colour intensity
  • none of these
Q.37

Pick out the wrong statement.

  • For a pressure vessel to be classified as 'thin vessel', the ratio of wall thickness to mean radius is less than 0.1.
  • For calculating forces and efficiency of rivetted joint, either rivet diameter or rivet hole diameter is used in case of pressure vessel and in structural work.
  • Longitudinal joint is normally made butt joint to maintain the circularity of the vessel.
  • Maximum diameter of the opening provided in a pressure vessel, which does not require any compensation is 200 mm.
Q.38

Rain drops falling through atmospheric air attain limited terminal velocity, because of

  • upward thrust due to air.
  • viscous force exerted by air.
  • surface tension effects of water.
  • force of gravity.
Q.39

Which of the following is a permanent fastening?

  • Rivets
  • Bolts
  • Screws
  • Keys
Q.40

Often earing defects are found during deep drawing operation, because the

  • surface finish of the sheet is poor.
  • sheet material has been given substantial spring back.
  • starting sheet has planer anisotropy due to its texture.
  • starting sheet has normal anitropy due to its texture.
Q.41

Blast furnace is a

  • counter current reactor
  • co-current reactor
  • cross-current reactor
  • combination of all the three
Q.42

Absorptivity of a grey body varies with the

  • wavelength of the incident ray.
  • temperature
  • both'a' & 'b'
  • neither 'a' nor 'b'
Q.43

Wrought iron does not have the

  • uniform strength in all directions.
  • ability to hold protective coating.
  • high ductility & corrosion resistance.
  • easily weldable characteristics.
Q.44

Liquid nitrogen containers can be made from

  • ferritic stainless steel
  • HSLA steel
  • titanium
  • austenitic stainless steel
Q.45

The moment of inertia of a body comes into play in __________ motion.

  • curvilinear
  • linear
  • rotational
  • none of these
Q.46

Annealing of a material does not

  • permit its further cold working.
  • soften it.
  • case harden it.
  • none of these.
Q.47

The most detrimental impurity in high pressure boiler feed water is

  • suspended salt
  • dissolved salt
  • silica
  • turbidity
Q.48

Pick out the wrong statement.

  • A soft magnetic material should have high permeability and small area of hysterisis loop.
  • Poisson's ratio of high melting point metals is more than unity.
  • Solders generally melt at less than 185°C.
  • Steel produced by B.O.F process is ideally suited for manufacturing flat product.
Q.49

Production of a hollow product by inflation of a tube or parison is called the __________ process.

  • blow moulding
  • calendering
  • extrusion
  • injection
Q.50

Silicon percentage in acid resistant cast iron is about

  • 4
  • 8
  • 14
  • 20
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