NPCIL Stipendiary Trainee Maintainer Turner/Machinist Advanced Paper 2019

NPCIL Stipendiary Trainee Maintainer Turner/Machinist Advanced Paper | NPCIL Stipendiary Trainee Turner/Machinist Category II (ST/TM) Paper 2019 at Rawatbhat Rajasthan Site

What is the necessary condition for turning ?
(a) Work piece harder than cutting tool
(b) Cutting tool harder than work piece
(c) Both (a) & (b)
(d) None of these

Movement of tool parallel to the axis of job is termed as ___________.
(a) longitudinal feed
(b) Cross feed
(c) Boh (a) & (b)
(d) None of these

A tapered work piece has large diameter D=80 mm, small diameter d=70 mm & taper is 1/20. Find the taper length in mm ?
(a) 80
(b) 50
(c) 100
(d) 200

Which of the following is NOT work supporting device ?
(a) face plate
(b) Fixture
(c) spindle
(d) Chuck

Which of the following provides foundation for the whole machine ?
(a) tailstock
(b) carriage
(c) headstock
(d) bed

A gear wheel has 36 teeth and 3 mm module, its pitch diameter is ________mm.
(a) 12
(b) 75
(c) 108
(d) 33

A hole is being drilled with 5 mm drill at a feed of 0.1 mm/revolution and speed is 200 rpm. Calculate the metal removal rate in cubic mm/minute.
(a) 392.8
(b) 785.6
(c) 1570
(d) 2570

To cut a Right hand threads, the spindle and lead screw rotates in ___________.
(a) Opposite Direction
(b) Same Direction
(c) Can be rotated in any direction depth
(d) Lead screw rotates but Spindle does not rotate

1 inch =_______mm
(a) 5.4
(b) 15.4
(c) 25.4
(d0 35.4

While machining cast iron, what should be the coolant ?
(a) Air
(b) Kerosene
(c) Machine oil
(d) Cold water

The axial advancement in one rotation of a single start screw is known as _______of the threads.
(a) Helix
(b) Depth of cut
(c) Pitch Diameter
(d) Pitch

How many percentage Chromium is there in HSS ?
(a) 1%
(b) 4%
(c) 10%
(d) 18%

A hole whose lower deviation is zero is called basic hole. Which one of the following letter indicates basic hole?
(a) E
(b) F
(c) G
(d) H

Mild steel work can be machined with ______rake angle.
(a) Negative
(b) Positive
(c) Any angle
(d) None of these

In a shaper machine, if the length of the cutting stroke is 10 mm and time required by the cutting stroke is 5 second, then find the value of cutting speed in mm/second ?
(a) 2
(b) 0.5
(c) 1
(d) 8

Which of the following is NOT an alloy?
(a) Steel
(b) Copper
(c) Bronze
(d) Brass

The pattern on the work surface caused by the movement of the cutting tool is called __________.
(a) Waviness
(b) Roughness
(c) texture
(d) Lay

____________is the operatin of finishing and sizing a drilled hole.
(a) Reaming
(b) Grooving
(c) Chamfering
(d) Grinding

In 1″ B.S.P thread, 1″ indicates __________.
(a) Nominal diametr of pipe
(b) Pitch of thread
(c) Minor diameter of thread
(d) Major diameter of thread

Select most appropriate answer ? Which of the following machine is primarily intended for producing flat surfaces ?
(a) Drilling
(b) Slotting
(c) Lathe
(d) Shaping