Deck 11: Technical Manufacturing and Engineering

Question 1

In most high speed milling cutters, positive radial rake angle is

A)10° - 15°
B)Less than 50°
C)15° - 25°
D)25° - 35°
E)5° - 10°

Answer 1

10° - 15°

Question 2

A feeder gauge is used to check

A)Screw pitch
B)Surface roughness
C)Diameter of round objects
D)Unsymmetrical shape
E)Thickness of a clearance

Answer 2

Thickness of a clearance

Question 3

Surface finish of a casting is affected by

A)fineness of sand
B)pattern finish
C)mould dressings
D)All of the above
E)Parting off

Answer 3

All of the above

Question 4

In which of the following welding process the two pieces to be joined are over-lapped and placed between two electrodes?

A)Projection welding
B)Spot welding
C)Seam welding
D)Butt welding
E)Percussion welding

Question 5

The range of temperature for soldering process is

A)10°C to 50°C
B)400°C to 650°C
C)250°C to 400°C
D)180°C to 250°C
E)50°C to 100°C

Question 6

The equipment used in pit for supply of air is

A)Centrifugal blower
B)Fan
C)Hand blower
D)Reciprocating air compressor
E)Air cylinder

Question 7

Material used for surface plate in fitting shop is

A)Mild steel
B)Parting off
C)Cast iron
D)Cast steel.

Question 8

During ultrasonic machining the metal removal is effected by

A)High frequency sound waves
B)High frequency eddy currents
C)Rubbing action between tool and work piece
D)Hammering action of abrasive particles
E)All of the above

Question 9

Solid punches are used for making holes having diameter equal to

A)Parting off
B)(2.5 - 10) mm
C)(4 - 6) mm
D)(1 - 3) mm

Question 10

During arc welding the welding speed is too low, it is likely to result in

A)Excessive pilling up of weld metal
B)Overlapping without penetration edges
C)Wastage of electrode material
D)All of the above
E)None of the above

Question 11

In arc welding as the thickness of the material to be welded increases, the welding current requirement

A)Decreases
B)8 mm
C)Does not change
D)Increases

Question 12

Molasses in a foundry shop is used

A)For preventing rusting of castings
B)For use as a fuel in furnace
C)For making moulds
D)For core making
E)For cleaning castings

Question 13

Prescribed maximum reading distance for a 100 mm dial is generally

A)1.5 - 2.0 m
B)4 - 5 m
C)2.5 - 3 m
D)1 - 1.5 m
E)1 m

Question 14

In plasma arc machining the achievable tolerances are nearly

A)0.01
B)1
C)25
D)250
E)0.1

Question 15

Which of the following material is cut at the highest cutting speed?

A)Copper
B)Alloy steel
C)Brass
D)Cast iron
E)High carbon steel

Question 16

Weld spatter defect in welding is generally the result of

A)Using too high welding current
B)Using too low welding current
C)Low voltage
D)High voltage
E)None of the above

Question 17

A 30 ton press means

A)The weight of die is 30 tons
B)The quantity of work produced in 8 hours will be 30 tons
C)The flywheel of the press weighs 30 tons
D)Gross weight of the press is 30 tons
E)The pressure exerted by slide is 30 tons

Question 18

For drills having diameter upto 12.7 mm.

A)Parallel shank is provided
B)Tapered shank is provided
C)Shank may be either of (A) or (B)
D)Bell metal

Question 19

The machining allowance provided on patterns depends on

A)The material of the casting
B)Size and shape of casting
C)The material of the pattern
D)The composition of moulding sand
E)Temperature of molten material

Question 20

For the same capacity which of the following process has the lowest capital cost?

A)Abrasive jet machining
B)Chemical machining
C)Electron jet machining
D)Abrasive jet machining.
E)Electro chemical machining

Question 21

For centreless grinding the surface speed is

A)1200 to 1500 metres per minute
B)600 to 900 metres per minute
C)500 to 600 metres per minute
D)1500 to 1800 metres per minute
E)Parting off

Question 22

The rating of solder iron normally used for electronics work is

A)1 kW to 2 kW
B)750 to 1000 watts
C)500 to 750 watts
D)250 to 500 watts
E)50 to 100 watts

Question 23

The process of bringing out the lustre of metal usually by the use of cloth wheels is known as

A)Finishing
B)Buffing
C)Deburring
D)Burnishing
E)Carmetting

Question 24

During soldering

A)Borax is used a flux
B)Solder iron bit is red hot
C)Metal is heated from top as well as bottom
D)Arc is produced between solder iron and metal to be soldered
E)Joint area must be clean and close fitting

Question 25

An optical gauge works on the principle of

A)Dispersion of light rays
B)Polarisation of light rays
C)Interference of light rays
D)Reflection of light rays
E)Refraction of light rays

Question 26

Antioch is

A)A soft soldering process
B)A process for making porous moulds
C)An instrument for measurement of porosity of sand
D)A process for removal of excess solder from joints
E)A hand tool used for repairing moulds

Question 27

A gate is the

A)Vent hole to allow for the hot gases to escape
B)Channel for the flow of excess molten material
C)Passage through which metal rises when the mould is filled
D)Passage through which metal is poured into the mould
E)Passage that finally leads molten metal from the runner into the mould cavity

Question 28

Shrinkage of cast iron on solidification is nearly

A)1%
B)13%
C)Parting off
D)5%
E)6.50%

Question 29

Machinability is affected by

A)tool geometry and material
B)cutting fluids
C)regidity of tool and machine
D)All of the above
E)Parting off

Question 30

Two 3 mm thick MS sheets are to be welded. Electrodes of 16, 12, 10 Nos, are available which one would you choose.

A)16
B)12
C)10
D)Any of the above
E)None of the above

Question 31

In electro chemical machining the metal is removed by

A)Molecular transfer
B)Ionic bombardment
C)Collimated light rays
D)Ultraviolet rays
E)Dissolution in electrolyte solution

Question 32

The property of sand due to which it clings to the sides of a moulding box, is called

A)permeability
B)adhesiveness
C)electron affinity
D)cohesiveness
E)Parting off

Question 33

Cutting speed in turning operation for aluminium is

A)30 m/min
B)15 m/min
C)200 m/min
D)400 m/min
E)1000 m/min

Question 34

In a 32A 49-H 8V BE grinding wheel the grit size is represented by

A)H
B)8
C)46
D)BE
E)32

Question 35

In theory of metal cutting the shear plane angle is the angle between

A)Shear plane and tool axis
B)Shear plane and job surface
C)Shear plane and tool surface
D)Shear plane and horizontal plane
E)Shear plane and verticalplane

Question 36

Load cells are used

A)For the measurement of weight
B)For pile driving
C)For the measurement of strain
D)For the measurement of stress
E)For the measurement bearing capacity of soils

Question 37

A sinebar is used to measure

A)Surface roughness
B)Gear profiles
C)Internal tapers
D)External tapers
E)All of the above

Question 38

In a power hacksaw machine blade the number of teeth per inch are generally

A)10 - 12
B)4 - 6
C)20 - 24
D)12 - 20
E)24 - 32

Question 39

Shanks of taper drills are provided standard taper known as

A)Jarno and Reed taper
B)Morse taper
C)Brown and Sharpe taper
D)Chapman taper
E)Sellers taper

Question 40

A step cone pulley is provided on a lathe to

A)To reverse the spindle rotation
B)To drive the lead screw
C)For taper turning
D)Reduce power consumption
E)To change spindle speeds

Question 41

Usual thickness of a hacksaw blade is

A)1 mm
B)Parting off
C)0.7 mm
D)0.4 mm

Question 42

For ultrasonic welding the thickness of metal is usually restricted to

A)15 mm
B)10 mm
C)25 mm
D)6 mm
E)3 mm

Question 43

Lathe bed is usually made of

A)Cast iron
B)Satellite
C)Alloy steel
D)Mild steel
E)High speed steel

Question 44

Plate liners used between the vice-jaw and the work piece are made of

A)Copper or Tin
B)Mild steel
C)Parting off
D)Hard steel

Question 45

In case of grey cast iron the volumetric shrinkage is around

A)15%
B)2%
C)10%
D)25%
E)20%

Question 46

For the soldering of galvanized iron the flux used is

A)Hydrochloric acid
B)Zinc oxide
C)Muriatic acid
D)Ammonium chloride
E)None of the above

Question 47

Automobile gears are generally manufactured by

A)Extrusion
B)Die casting
C)Stamping
D)Rolling
E)Hobbing

Question 48

Which is not a part of shaper?

A)Vernier caliper
B)Table
C)Cross slide
D)Ram
E)Tool head

Question 49

A bleed type relay is generally used in

A)Pneumatic systems
B)Electrical systems
C)Electronic systems
D)Mechanical systems
E)None of the above

Question 50

For aluminum casting to be turned on a lathe, which chuck would be preferred?

A)Four jaw independent chuck
B)Pneumatic chuck
C)Collet chuck
D)Three jaw self-centring chuck
E)Face plane