Previous year question paper for Machinisht and Machinisht Grinder

previous year question paper for Machinisht and machinist grinder 1st sem 2015 part ii

 26. 1000 microns means
 A. 1 mm B. 1 m  C. 1000 mm D. 10 cm

 27.What is the appropriate relation between rotation speed of drilling and respective dril?
 A The bigger the diameter of the drill. the higher the rpm
 B. The bigger the diameter of the drill. the lower the rpm
 C. The rpm of the drill does not depends on Its diameier
 D. The rpm of the drill must be always highe: than 1000 rpm

 28 .The distance from a point on one thread to a corresponding point on the adjacent thread measured parallel to the axis is called
 A lead
B pitch
 C helix
 D depth

 29 . The top surface joining the two sides of adjacent thread is called
 A crest
 B root
 C flank
 D thread angle


30. The included angle of the ISO metric thread is
A 27 ½°
 B 30°
 C 55°
 D 60° .

 31. Name the Instruments shown in fig

 A Plunger type dlat test indicator 1!
 B Lever type dial test indicator
 C Automatic type dial test indicator
 D Semi automatic type dial test indicator

 32. Name the part marked "X" in fig

A .stem
 B anvil
 C plunger
 D pointer

 33. The operation of shaping of the grinding wheel and make it to run concentric wnh axis is called
 A dressing
 B truing C clogging D glazing

 34 . Which one of the following is NOT the basic types of wheel dressers? A Steel B Abrasive C Diamond D Boron

 35. The ideal grinding wheel will wear away A as the abrasive particles become dull B at a predetermined rate C slowly to save money D fast to give better finish

 36. Aluminium oxide abrasives are used for grinding
 A high tensil strength materials
 B low tensile strength. hard and brittle materiais
 C hardened steel
 D cold rolled steel

 37. Silicon carbide wheels are used for grinding
 A high tensile strength materials
 B low tensile strength. hard and brittle materials
 C hardened steel
 D cold rolled steel

 38. A grinding wheel ls specifted as 32 A46H8V what does the number 46 indicate?
A Grade
 B Grain
 C Bond
 D Structure

 39. In a grindlng wheel, the strength of the bond it that holds the grain in posltion is called
 A grade
 B grain
 C bond
 D structure

 40 . In a grinding the amount of bond present between the abrasive grain is called
A grade
 B grain
C bond
 D structure

 41. in a standard marking system of a grinding wheel the bond is indicated in
 A position 2
 B position 3
 C position 4
 D position 5 '

 42. The most widely used bond in grinding wheel is
A vertified bond
 B silicate bond
C shellac bond
 D rubber bond

 43. Which kind of bonds are used in cut off wheels? 
A Vertified bond
B silicate bond
 C shellac bond
 D rubber bond

44. During grinding operation the surface of the grinding wheel develops a smooth and shining appearance This appearance is termed as
A dressing
B truing
 C glazing
 D loading

 45. In a grinding operaton, the ground metal particles are get clogged between the abrasive particles This is called
 A dressing
 B truing
 C gIazing
 D loading

 46. ln grinding. the surface speed (cutting Speed) is expressed in
A mm/minute
 B mm/second
 C m/minute
 D m/second

 47. Name the grinding wheel shown in fig .

 A Recessed one side -- Type 5
 B Straight cup -- Type 6
 C Flaring cup -- Type 7
 D Cylinder --- Type 2

 48. Which type of grinding wheei is used on tool and cutter grinder to sharpen the mining cutters?
 A Straight cup wheel
 B Flaring cup wheel
 C Dish whee!
 D Saucer wheel

 49. Name the grinding wheel ussed for sharpening circular and hand raws?
 A Straight cup wheel
B Flaring cup wheel
C. Dish wheel
 D Saucer wheei

 50. Lay depends upon the method of grinding operation Which type of grinding wheel will produce the lay shown in fig?

 A Straight wheel with reciprocating wcrk
B Cup wheel with reciprocating work
C Segmental wheel on vertical spindle
 D Cup or segmental wheel with rotating work