72.

73.

74.

75.

76.

77.

78.

79.

80.

Which preparatory code is used to identify the work zero point ina CNC Machine?
(A) G92 (B) G54
(0. 650 (D) G27

State the name given to the following program simplification method One block program for
drilling / Boring, number of holes equally spaced in a pitch circle :

(4) Sub program (B) Programmed path

(C) Canned cycle ൯൬) Drilling/ Boring cycles
The last drive shaft in the headstock assembly of a lathe is :

(^) Feed rod (B) Lead screw

(C) Main spindle (1) Tail stock spindle

The back gear unit of a cone pulley lathe is used for :
(A) Reduce the spindle speed
൯) Increase the spindle speed
(C) Change the direction of rotation of lead screw
(D) Change the direction of rotation of spindle

In orthogonal cutting, the cutting edge inclination is :

(A) 07 (B) 4°
(© 12° (D) 30°
An oblique cutting tool angle ranges from :
(A) 12° to 15° (B) 15° to 25°
) 20° to 30° (D) 25° to 40°

The size of a slotting machine is specified by :
(A) Maximum stroke length of the ram
(B) Maximum table size of slotting machine
(C) Total weight of slotting machine
(D) Maximum height of slotting machine

The stroke length of slotting machine is adjusted by change :
൧) The diameter of bull gear
(B) The length of ram
(C) The counter weight
(0) The radius of sliding block on bull gear

A slotting machine removes metal during :
(A) Movement of ram is stopped (B) Upward stroke only
(C) Downward stroke only (D) Both upward and downward stroke

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