56.

57.

58.

59.

60.

61.

62.

63.

Indian standard marking system of grinding wheel is denoted by :
(A) 181248:1953 (8) 181249:1985
(© 181249:1958 (0) 76

In plunge grinding the thread grinding work requires :
(^) 20smpm ൯) 14smpm
(C) 4smpm ൯) 3smpm

Which one of the following cutter is not to ground on the lands of the cutter?

(A) Reamer flute cutter ൯) Side and face cutter
(@ Slotting cutter (D) Equal angle cutter

Which one of the following concentration wheel is recommended for both vitrified and metal
bonded cup wheels used for off hand grinding?

(A) 125 concentration (B) 100 concentration

(C) 75 concentration (D) 50 concentration
When using diamond dresser 1 carat diamond is used for dressing upto diameter
wheels?

(A) 150mm (B) 200 mm

(C) 250mm (D) 300 mm

In special case the glazed grinding wheel can only be used for :
(ಹ) Rough grinding (B) Off hand grinding
(C) Cut off grinding (D) None of the above

In internal grinding using cylindrical grinder which of the following statements are true :
(^) The wheel rotates in a fixed position; the works is rotating and reciprocating
(B) The work rotates in a fixed position; the wheel is rotating and reciprocating

(C) The work and wheel rotates in a fixed position; at the same time the work and the
wheel rotating and reciprocating

(D) None of the above

Which one is not a machine safety precaution in surface grinding?
(A) Keep your fingers away from the moving parts of the machine
(B) Check the centralised lubricant system by pressing app switches
(C) Do not handle the surface of the work piece while the machine is operating

(D) Do not use your hand to stop movement of any part of the machine

014/2024 10 A