A:-Aluminium oxide
B:-Diamond
C:-Corundum
D:-Silicon Carbide
Correct Answer:- Option-B
Question69:-The material of twist drill is
A:-Forged steel
8:55
C:-Cast iron
D:-Stellite
Correct Answer:- Option-B
Question70:-Give reason for cutting fluid used in cutting operation
A:-To improve surface finish
B:-To wash ship away
C:-Prevent corrosion of finished surface
D:-All the above
Correct Answer:- Option-D
Question71:-The main parts of Try square is
A:-Stock or beam and blade
B:-Stock and handle
C:-Blade and handle
D:-Head and blade
Correct Answer:- Option-A
Question72:-The distance between one point of a screw thread to the cormesponding point on the next thread is called
A:-Nominal diameter
B:-Crest
C:-Pitch
D:-Flank
Correct Answer:- Option-C
Question73:-Which one of the following is not a ferrous metal 7
A:-Bronze
B:-Cast iron
6.5.5.
D:-Mild steel
Correct Answer:- Option-A
Question74:-The material used to make a flat file
A:-Wrought iron
h grade steel
C:-High speed steel
D:-Stellite
Correct Answer:- Option-B
Question75:-In cutting, more than one cutting edge came into action.
A:-Orthogonal
B:-Volute
C:-Oblique
D:-None of the above
Correct Answer:- Option-C
Question76:-Name the device which hold and locates चे work piece and guides and control one or more cutting tool.

Correct Answer:- Option-D
Question77:-Name the tool used to check the alignment of a machine, while erecting the machine in foundation bolt in the
concrete base.

A:-Feeler gauge