51,

52,

53,

54,

55,

56,

57.

58,

When the angle between the shaft 15 90 degree and two gears of a pair are equal, they are
called :

(5) spur gear (8) spiral gear (ಲ) helical gear (D) mitre gear

The method of removing metal by pushing or pulling an elongated cutting tool with a number
of teeth in though hole or along a surface is known as :

(ಹ) broaching (8) ண்டி (ಲ) lapping (D) hobbing

The grinding or abrading process mostly used for finishing round holes with the help of
bonded abrasive stone is called :

(ಹ) lapping (8) buffing (ಲ) honing (D) hot dipping

The advantage of centerless grinder is :

(5) the workpiece being supported throughout its length
(8) no centre holes is required

(ಲ) the size of workpiece is easily controlled

(D) गा of these

The perpendicular distance measured from the machined surface to unmachined surface is
called :

(ಹ) feed (B) depth of cut (ಲ) chamfer (D) taper

The device used for holding and rotating a hollow workpiece that has been previously drilled
15:

(A) mandrel (B) വി (9) driving plate (2) centre

The operation of machining several surfaces of a workpiece simultaneously by feeding table
against a number of cutters is known as :

(ಹ) straddle milling (B) profilemilling (ಲ) saw milling (D) gang milling

Which of the heat treatment gives a scale free surface to the component ?

(ಹ) flame hardening (B) nitriding
(9) induction hardening (D) tempering
9 071/2017

{P.T.O}