JULY 2015 SEM III FITTER

Plug gauge are used to.........

A   measure the diameter of the workpiece                    B   measure the diameter of holes in the workpiece

C   check the diameter of the holes in the workpiece     D  check the length of the holes in work piece

The taper of internal dovetail can be measured with the help of...........

A  combination set    B   balls of standard dimensions and slip gauges  

C  sine bar                D  clino meter

A sine bar is specified by.........

A  its total length                                                  B  the distance between rollers & upper surface
C  the centre distance between the tv rollers          D  its total length

A feeler gauge is used to check
A radius  B  screw pitch   C  surface roughness   D  thickness of clearness

The mean diameter between the largest diameter and the smallest diameter of a screw thread is called........

A  major diameter  B  pitch diameter  C  minor diameter  D  imaginary diameter

The crest parts of which type of thread is half round...............

A  square thread   B  knuckle thread    C  acme thread     D  buttress thread

Tempering is the process of removing the property of..........

A brittleness   B malleability    C toughness   D ductility

The main purpose of annealing is
A  to increase hardness                        B  to increase the toughness
C  to improve the machinability           D  to remove distortion

The standard range of sizes covered in the B.I.S system of limits and fits are........

A 0 to 10 mm   B  0 to 100 mm   C  25 to 400 mm D  0 to 500 mm

Washer are generally specified by

A thickness   B outer diameter   C centre hole diameter   D mean diameter

The function of a washer is......

A  to fill the axial gap                           B  to provide cushioning effect
C  to absorb shocks and vibrations         D  to provide bearing area

Buttress threads are most commonly used for............

A   positioning of mechanical parts

B   transmission of motion

C   resisting force exerted in one direction only

D   special bolts and nuts in structural work

V threads are used.......................
A power press   B screw jack   C general purpose  D railway coupling

Half round scraper is used for............

A  scraping small scraper diameter holes and for deburring of holes
B  scraping large flat surfaces
C  scraping bearing surfaces which are neither too big or too small
D  scraping large diameter holes

Name the type of spring used in cycle stand.
A  tension spring    B  torsion spring    C compression spring    D  wire spring

In a plain bush bearing to prevent the rotation of bush in the housing, it should be fitted by means of..............

A soldering  B brazing   C welding   D  key or screw

Which spring used for absorbs energy by means of bending?
A conical disc spring    B  helical compressive
C  leaf spring                D  helical tension spring

The portion of the shaft carried in the bearing is often referred to as.....................

A cage    B thrust    C journal   D race

Hook scrapers are used for scraping
A   curved surface    B   centre position of large flat surfaces
C   hollow surface    D bendsuiface

The difference between the maximum limit of size and the minimum limit of size is called........

A   upper deviation   B   lower deviation   C tolerance  D  actual size

The process of embedding the abrasive
grains on lapping is called.......

A rubbing   B charging  C fixing  D lapping

The abrasive used for boning of non-ferrous metal Is.........

A  boron carbide    B diamond
C  silicon carbide   D  aluminium oxide

Which type of spring used in writing pad clips?
A wire   B tension   C compression   D torsion

The main purpose of using a lubricant in machine tools is to..............

A  minimize the friction between the mating parts

B wet the mating parts for close contact
C prevent the machine tool from heating
D  to cool down the mating parts

Set of 47 pieces slip gauge 1st series no. of pieces........

A 1       B 4        C 9       D 24

A thumb screw designated A m6 x 12 IS: 3726-4.6 what is 4.6?
A Characteristic     B  Property class       C Size     D Length

In which heat treatment process the internal structure is unchanged?
A Annealing                     B Hardening
C  Case hardening            D Normalizing

An angle slip gauge standard set the number of pieces in the second series is......

A3  B 4  C 5  D 6

Thread pitch blades are made of
A  thin spring steel sheets              B  thin spring brass sheets

C  thin spring copper sheets           D  thin spring aluminium sheets

IS specification of plain washer is
A   IS 5371  B IS'2016 C IS 8068 D IS 5372

Standard wire gauge no. 32 is equal to in mm.......

A 0.25   B 0.27  C 0.29   D 0.31

A standard wire gauge (SWG)25 is equal to............

A 0.61 mm   B 0.56 mm   C 0.51 mm  D  0.46 mm

After hardening process the metal becomes more......

A brittle    B ductile   C malleable    D tough

Which one of the following equipments is used in the shop floor for the checking of the form that is being turned?

A Template                                               B  Master gauge

C  Dial test indicator and slip gauges        D  Tool room microscope

Abbreviation of ISO metric thread is
A  Indian system organisation                 B  International system organisation
C  International standard organisation    D  Indian standard organisation

Riffler files are used for

A keyway   B slot  C engraving  D  barret and marking

Name the threads used as general purpose fasteners.

A Acme thread   B Buttress thread  C V thread  D Knuckle thread

Which key has a rectangular cross - section and it fits into the keyway cut on both the shaft and the hub?

A Hollow saddle key  B Feather key  C Wood ruff key  D Sunk key