THE MCQs ARE ARRANGED AS PER THE NEW NSQF 5 LEVEL SYLLABUS
Q.1) A cutting tool used to finish and enlarge a hole is known as
Drill
Tap
Reamer
Die
Q.2) Which one of the following metals does not require any coolant during reaming?
Aluminum
Copper
Cast iron
Steel
Q.3) The grooves provided on the entire length of the body of a twist drill are called
lips
flutes
margin
webs
Q.4) A wedge-like tool is used for removing the taper shank tools from the nose of the machine spindle? What is this called?
Drill chuck
Drill key
Drill drift
Drill socket
Q.5) A hole, which is not made through the full depth of the component is known as
core hole
pin hole
blind hole
bore hole
Q.6) The drill sleeves or sockets are available with morse taper and their number range MT-1 to MT-6. Which one of the following drill sizes refers to MT-4?
Drills above 14 mm up to 23 mm
Drills above 23 mm up to 31.75 mm
Drills above 31.75 mm up to 50.50 mm
Drills above 50.50 mm up to 76 mm
Q.7) A drilled hole goes out of center due to
improper clamping of the workpiece
workpiece having blow holes
centre punch mark not being large enough to give proper seat to the chisel edge of the drill
any one of the above
Q.8) Which one of the following coolants are used for reaming aluminum workpiece?
Kerosene
Water
Air pressure
Lard oil
Q.9) A Ø 6H7 hole is to be reamed in a steel workpiece. What size of the drill will be required?
5.5 mm
5.8 mm
6.0 mm
6.2 mm
Q.10) The point angle of twist drill depends upon the
cutting speed
type of drilling machine
material to be drilled
size of the drill
Q.11) The point angle of twist drill for general purposes is
135°
118°
90°
60°
Q.12) The relief angle given behind the cutting lips is called
helix angle
lip clearance angle
rake angle
chisel edge angle
Q.13) A hole of 10 mm diameter is to be finished with a hand reamer. The hole size required for reaming should be
9.50 mm
9.25 mm
9.75 mm
9.00 mm
Q.14) The process of enlarging the end of an existing hole to accommodate the head of the socket screw is called
spot-facing
boring
counter-boring
counter-sinking
Q.15) The process of beveling the end of the existing hole is called
spot-facing
boring
counter-sinking
counter-boring
Q.16) The taper shank drills should be removed from the machine spindle by means of
hammer
tang of file
drift
punch
Q.17) Drill chucks are held on the machine spindle by means of
drift
draw-in bar
arbor
chuck nut
Q.18) Drill sleeve is used when the taper shank of the drill is
larger than the machine spindle
equal to the machine spindle
smaller than the machine spindle
None of the above
Q.19) The lip clearance angle of twist drill for the general purpose should be
3° to 5°
12° to 15°
4° to 8°
8° to 12°
Q.20) The suitable cutting fluid for drilling M.S. plate is
water
compressed air
soluble oil
dry
Q.21) The distance a drill advances into the job in one complete revolution is known as
r.p.m.
cutting speed
feed
machine speed
Q.22) Which one of the following is used to hold the straight shank drill having a diameter less than 12 mm?
Sleeve
Socket
Drill Chuck
Drill drift
Q.23) The rate of feed depends upon
finish required
the material of tool (drill)
material to be drilled
all the above
Q.24) Which among the following is NOT the factor for selection of cutting speed and feed for reaming a hole with a machine reamer?
The material of the job.
The material of the reamer.
Diameter (size) of the reamer.
The rigidity of the fixture.
Q.25) A nut is to be made for a screw of M 10 x 1.5. What should be the size of the drilled hole?
8.5 mm
9.0 mm
9.5 mm
10.0 mm
No comments:
Post a Comment