67.

08.

69.

70.

71.

722

73.

74.

Indexing head mechanism works with 2

வி) Worm and worm gear (B} Two helical gear
(८) Rack and pinion (D) Two bevel gear

A hexagon socket screw key (allen key's) is designated as KEY 815 3082. Number 8 represents
the diamension

(A) of the diagonal of hexagon of the socket
18) width across flat hexagon

(0) of the diameter of the screw

(D) depth of the socket

CNC machines have built-in measuring system. The tool to reach the programmed position
is known as

(^) Reference point (B) Machine zero (6) Work zero (D) Programme zero

A mild steel part has to be forged. Which colour indicate the most suitable forging
temperature ?

(A) Red (18) णा cherry red (C) White (2) Yellow

Which one of the following is an artificial abrasive ?
{A) Silicon Carbide (ह) Corrundum (C) Diamond (D) Emery

While machining cast iron, coolant should ‏عط‎
‎(5) Soft water (8) Kerosene (C) Dry air (D) Machine 011

Tour steel pins of ¢ ಹ mm were turned 17 a lathe. Actual values of the four

components measured with a outside micromeler are given below. Which pin dimesion is
within the specified limits ?

(வ) 50.00 mm 18 50.022 mm (C) 50.050 mm (D) 50.075 गपा,

The standard taper of taper pin is
(A) 1:40 8) 1:30 (€) 1587 (0) 1:20

11 150/2014
[P.T.O.}