Q.1

In back-hand welding, the angle between the welding rod and the work is __________ as compared to fore-hand welding.

  • same
  • less
  • more
Q.2

Forming is the operation of removing metal to the desired shape from the edge of a plate.

  • Correct
  • Incorrect
Q.3

The length of hacksaw blade is the distance between the outside edges of the holes which fits over the pins.

  • Agree
  • Disagree
Q.4

Seam welding is best adopted for metal thickness ranging from

  • 0.025 to 3 mm
  • 3 to 5 mm
  • 5 to 8 mm
  • 8 to 10 mm
Q.5

A progressive limit gauge has

  • 'Go' and 'Not go' member on the same side of the gauge
  • separate 'Go' and 'Not go' members
  • 'Go' member at one end and 'Not go' member at the other end
  • none of the above
Q.6

The oxygen cylinder is usually painted with

  • black colour
  • white colour
  • maroon colour
  • yellow colour
Q.7

Which of the following welding method uses a pool of molten metal?

  • Carbon arc welding
  • Submerged arc welding
  • TIG arc welding
  • MIG arc welding
Q.8

Lap joints are employed on plates having thickness

  • less than 3 mm
  • 5 to 10 mm
  • 12.5 mm
  • above 25 mm
Q.9

In a unilateral system of tolerance, the tolerance is allowed on

  • one side of the actual size
  • one side of the nominal size
  • both sides of the actual size
  • both sides of the nominal size
Q.10

A file with-teeth inmm is called bastard file.

  • True
  • False
Q.11

A large electrode is used in un-shielded arc welding.

  • Correct
  • Incorrect
Q.12

A basic shaft is one whose

  • lower deviation is zero
  • upper deviation is zero
  • lower and upper deviations are zero
  • none of these
Q.13

A two high rolling mill consists of two rolls which rotate

  • at the same speed and in the same direction
  • at the same speed but in opposite direction
  • at different speeds and in the same direction
  • at different speeds and in the opposite direction
Q.14

A file withteeth inmm is called

  • rough file
  • bastard file
  • second cut file
  • smooth file
Q.15

Carburising flame is used to weld

  • steel, cast iron, copper, aluminium etc
  • brass and bronze
  • hard surfacing materials such as stellite
  • all of these
Q.16

The flux commonly used in brazing is

  • zinc chloride
  • ammonium chloride
  • rosin plus alcohol
  • borax
Q.17

The electrode tip diameter (d) in spot welding should be equal to (where t = Thickness of plate to be welded)

  • t
  • 1.5 t
  • 3 t
  • 6 t
Q.18

The increase in hardness due to cold working, is called

  • age-hardening
  • work-hardening
  • induction hardening
  • flame hardening
Q.19

For obtaining a cup of diametermm and heightmm by drawing, the size of the round blank should be approximately

  • 42 mm
  • 44 mm
  • 46 mm
  • 48 mm
Q.20

When a pattern is made in three parts, the top part, is known as a

  • drag
  • cheek
  • cope
  • none of these
Q.21

In arc welding, the electric arc is produced between the work and the electrode by

  • voltage
  • flow of current
  • contact resistance
  • all of these
Q.22

In a hot chamber die casting machine

  • melting pot is separate from the machine
  • melting pot is an integral part of the machine
  • melting pot may have any location
  • high temperature and pressure is used
Q.23

Metal patterns are used for

  • small castings
  • large castings
  • complicated castings
  • large scale production of castings
Q.24

The purpose of a riser is to

  • deliver molten metal into the mould cavity
  • act as a reservoir for the molten metal
  • feed the molten metal to the casting in order to compensate for the shrinkage
  • deliver the molten metal from pouring basin to gate
Q.25

In welding copper alloys with TIG arc welding

  • direct current with straight polarity is used
  • direct current with reversed polarity is used
  • alternating current is used
  • any one of these
Q.26

Galvanising is a

  • zinc diffusion process
  • process of coating zinc by hot dipping
  • process used for making thin phosphate coating on steel
  • none of the above
Q.27

In a centrifugal casting method

  • core is made of sand
  • core is made of ferrous metal
  • core is made of non-ferrous metal
  • no core is used
Q.28

The electrodes used in spot welding have a tip of

  • stainless steel
  • aluminium
  • copper
  • brass
Q.29

The instrument which has all the features of try-square, bevel protractor, rule and scriber, is

  • outside micrometer
  • inside micrometer
  • depth gauge micrometer
  • combination set
Q.30

The blank diameter used in thread rolling will be

  • equal to minor diameter of the thread
  • equal to pitch diameter of the thread
  • a little larger than the minor diameter of the thread
  • a little larger than the pitch diameter of the thread
Q.31

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

  • actual deviation
  • upper deviation
  • lower deviation
  • fundamental deviation
Q.32

The ferrous metals require more machining allowance than non-ferrous metals.

  • True
  • False
Q.33

The draft or taper allowance on casting is generally

  • 1 to 2 mm/m
  • 2 to 5 mm/m
  • 5 to 10 mm/m
  • 10 to 15 mm/m
Q.34

Blanking and piercing operations can be performed simultaneously in a

  • simple die
  • progressive die
  • compound die
  • combination die
Q.35

When a hole or cavity to be cored is not in line with the parting surface, then a __________ is used.

  • horizontal core
  • vertical core
  • drop core
  • balanced core
Q.36

The cross-section of a chisel is usually

  • rectangular
  • square
  • hexagonal
  • octagonal
Q.37

The temperature of oxy-hydrogen flame is __________ oxy-acetylene flame.

  • same as
  • less than
  • more than
Q.38

In a four high rolling mill, there are four rolls out of which

  • one is working roll and three are backing up rolls
  • two are working rolls and two are backing up rolls
  • three are working rolls and one is backing up roll
  • all of the four are working rolls
Q.39

Which of the following welding process uses non-consumable electrodes?

  • TIG welding
  • MIG welding
  • Manual arc welding
  • Submerged arc welding
Q.40

In a bilateral system of tolerance, the tolerance is allowed on

  • one side of the actual size
  • one side of the nominal size
  • both sides of the actual size
  • both sides of the nominal size
Q.41

A pattern maker's shrinkage rule considers

  • all pattern allowances
  • only shrinkage allowance
  • all materials to be cast
  • all materials of the pattern
Q.42

The bloom is smaller than a billet.

  • True
  • False
Q.43

In average work, the tolerance produced by investment casting method is

  • ±0.05 mm
  • +0.2 mm
  • +05 mm
  • +1 mm
Q.44

A plug gauge is used to check the diameter of shafts and studs.

  • Correct
  • Incorrect
Q.45

Which of the following methods can be used for manufacturing 2 metre long seamless metallic tubes?

  • Drawing
  • Extrusion
  • Rolling
  • Extrusion and rolling
Q.46

When a pattern is made in three parts, the bottom part is known as a cope.

  • True
  • False
Q.47

The tolerance produced by shell moulding process of casting is

  • +0.05 mm
  • ±0.2 mm
  • +0.5 mm
  • ±1 mm
Q.48

In back-hand welding, the angle between the welding torch and the work is kept as

  • 30°-40°
  • 40°-50°
  • 50°-60°
  • 60°-70°
Q.49

A saw which cuts wood during the return stroke of the saw is known as

  • push saw
  • pull saw or draw saw
Q.50

In __________ welding, the weld may be made either from left to right or from right to left.

  • fore-hand
  • back-hand
  • vertical
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