Q.1
The property of sand due to which the sand grains stick together is called
Q.2
The current in electric resistance welding can be regulated by
Q.3
In a bilateral system of tolerance, the tolerance is allowed on
Q.4
In a unilateral system of tolerance, the tolerance is allowed on
Q.5
Tandem drawing of wires and tubes is necessary because
Q.6
Seam welding is best adopted for metal thickness ranging from
Q.7

Neutral flame is usd to weld

  • steel
  • cast iron
  • copper
  • all of these
Q.8

When more volume of acetylene and less volume of oxygen is supplied, then a __________ flame is obtained.

  • neutral
  • oxidising
  • carburising
Q.9

The brass and bronze are welded by __________ flame.

  • neutral
  • oxidising
  • carburising
  • all of these
Q.10

The instrument used to measure external and internal diameter of shafts, thickness of parts and depth of holes, is

  • outside micrometer
  • inside micrometer
  • depth gauge micrometer
  • vernier caliper
Q.11

Projection welding is a

  • continuous spot welding process
  • multi-spot welding process
  • arc welding process
  • process used for joining round bars
Q.12

For gas welding, the pressure desired at the welding torch for oxygen is

  • 7 to 103 kN/m2
  • 70 to 280 kN/m2
  • 280 to 560 kN/m2
  • 560 to 840 kN/m2
Q.13

The material which can be best cut with oxygen cutting process is

  • mild steel
  • brass
  • copper
  • aluminium
Q.14

The punch and die set up is __________ for punching and piercing operation.

  • similar
  • different
Q.15

The operation of cutting a number of holes evenly spaced in a regular pattern on a sheet of metal is. called perforating.

  • Agree
  • Disagree
Q.16

Which of the following statement is wrong?

  • The angular clearance on dies varies from 0.5° to 1°.
  • In drawing operation, the metal flows due to plasticity.
  • In press operation, the size of the pierced hole is independent of the size of punch.
  • none of the above
Q.17

The adhesiveness is the property of a sand due to which

  • it evolves a great amount of steam and other gases
  • the sand grains stick together
  • it cling to the sides of a moulding box
  • none of these
Q.18

Seam weiding is a

  • continuous spot welding process
  • multi-spot welding process
  • arc welding process
  • process used for joining round bars
Q.19

In fore-hand welding, the weld is made

  • from left to right
  • from right to left
  • first from left to right and then from right to left
  • either from left to right or from right to left
Q.20

For smoothing and cleaning out depressions in the mould, a __________ is used.

  • slick
  • lifter
  • swab
  • gagger
Q.21

Cast iron and steel pipes are produced by

  • slush casting
  • investment casting
  • true centrifugal casting
  • die casting
Q.22

The metal is subjected to mechanical working for

  • refining grain size
  • reducing original block into desired shape
  • controlling the direction of flow lines
  • all of these
Q.23

When two metal pieces of different thicknesses are to be welded by projection welding, then the projections should be made on __________ metal piece.

  • thinner
  • thicker
Q.24

A stripper-plate machine is used to draw the pattern from the mould.

  • Yes
  • No
Q.25

In a simple die

  • two or more operations are performed simultaneously at the single stroke of the ram
  • two or more cutting operations are performed at one station of the press in every stroke of the ram
  • both cutting and non-cutting operations are performed at one station of the press in every stroke of the ram
  • none of the above
Q.26

In spot welding, the distance between the nearest edge of the plate and centre of weld should be equal to

  • d
  • 1.5 d
  • 3 d
  • 6 d
Q.27

In order to produce uniform packing of sand in the moulds, a __________ is used.

  • sand slinger
  • squeezing machine
  • jolt machine
  • stripper plate machine
Q.28

The acetylene cylinder is usually painted with

  • black colour
  • white colour
  • maroon colour
  • yellow colour
Q.29

In blanking operation, the clearance is provided on

  • punch
  • die
  • half on the punch and half on the die
  • either on punch or die depending upon designer's choice
Q.30

The process of decreasing the cross-section of a bar and increasing its length, is called

  • drawing down
  • upsetting
  • spinning
  • peening
Q.31

A pattern is used to make the mould cavity for pouring the molten metal for casting.

  • Yes
  • No
Q.32

The oxidising flame is similar to neutral flame but the inner cone is less luminous and shorter.

  • Yes
  • No
Q.33

During hot working of metals

  • porosity of the metal is largely eliminated
  • grain structure of the metal is refined
  • mechanical properties are improved due to refinement of grains
  • all of the above
Q.34

In fore-hand welding, the angle between the welding rod and the work is kept as

  • 30°-40°
  • 40°-50°
  • 50°-60°
  • 60°-70°
Q.35

The algebraic difference between the maximum limit and the basic size is called

  • actual deviation
  • upper deviation
  • lower deviation
  • fundamental deviation
Q.36

The operation of producing cup shaped parts from flat sheet metal blanks by bending and plastic flow of metal, is known as

  • drawing
  • squeezing
  • coining
  • planishing
Q.37

Thermit, used in thermit welding, is a mixture of

  • charcoal and iron oxide
  • charcoal and aluminium
  • iron oxide and aluminium
  • charcoal, iron oxide and aluminium
Q.38

The difference between the upper limit and lower limt of a dimension is called

  • nominal size
  • basic size
  • actual size
  • tolerance
Q.39

The hot working of metals is carried out

  • at the recrystallisation temperature
  • below the recrystallisation temperature
  • above the recrystallisation temperature
  • at any temperature
Q.40

The process used to improve fatigue resistance of the metal by setting up compressive stresses in its surface, is known as

  • hot piercing
  • extrusion
  • cold peening
  • cold heading
Q.41

The operation of giving impressions of figures, letters or designs on sheet metal parts, is known as embossing.

  • Correct
  • Incorrect
Q.42

In order to ram the sand harder at the back of the mould and softer on the pattern face, a __________ is used.

  • sand slinger
  • squeezing machine
  • jolt machine
  • stripper plate machine
Q.43

In piercing operation, the clearance is provided on

  • punch
  • die
  • half on the punch and half on the die
  • either on punch or die depending upon designer's choice
Q.44

A casting defect which occurs due to improper venting of sand is known as

  • cold shuts
  • blow holes
  • shift
  • swell
Q.45

The surface to be left unmachined is marked on the pattern by

  • red colour
  • yellow colour
  • black colour
  • blue colour
Q.46

A hacksaw blade is specified by its

  • length
  • material
  • width
  • number of teeth
Q.47

The electron beam welding can be carried out in

  • open air
  • a shielded gas environment
  • vacuum
  • a pressurised inert gas chamber
Q.48

The minimum size of a bloom is

  • 5 cm x 5 cm
  • 10 cm x 10 cm
  • 15 cm x 15 cm
  • 20 cm x 20 cm
Q.49

The width of slot cut by a hacksaw blade is __________ the width of the blade.

  • equal to
  • less than
  • greater than
Q.50

Green sand is a mixture of

  • 30% sand and 70% clay
  • 50% sand and 50% clay
  • 70% sand and 30% clay
  • 90% sand and 10% clay
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