Drilling and Reaming MCQ 2

Q.1) The part of the reamer which allows the chips to pass and admit the coolant to the cutting edge is called

tang

neck

land

flute

Correct Answer- (D)

Q.2) While drilling, the drill gets over-heated. This is due to

excessive cutting pressure

more lip clearance angle

less cutting angle

material being drilled is ductile

Correct Answer- (A)

Q.3) During drilling, the feed rate is expresised in…………

RPM

mm/min

mm/rev

degree

Correct Answer- (C)

Q.4) The point angle of drill bit depends on the

material of the workpiece

size of the drill

type of machine

rpm of the drill

Correct Answer- (A)

Q.5) What is the function of part “pilot” provided in rearners?

Finish concentric holes

Removing chips

Hold in tap wrench

Hold in machine spindle

Correct Answer- (A)

Q.6) Twist drills are made with different helix angles, the helix angle determines …..

Clearance angle

Cutting angle

Rake angle

Lip angle

Correct Answer- (C)

Q.7) Which one of the following is NOT a type of drill shank ?

straight shank

taper shank

oval shank

square taper shank

Correct Answer- (C)

Q.8) Why is land or margin provided on twist drill ?

To control the size of drill

To give clearance to the body of the drill

To keep the drill in alignment while drilling

all of the above

Correct Answer- (D)

Q.9) When is drilling said to be deep hole drilling ?

When the depth of the hole to be drilled is more than five times the size of the drill.

When the depth of the hole to be drilled is more than four times the size of the drill.

When the depth of the hole to be drilled is more than three times the size of the drill.

When the depth of the hole to be drilled is more than two and half times the size of the drill.

Correct Answer- (A)

Q.10) Which among the following factors will NOT influence the selection of the cutting speed while performing operation on drilling machine?

Width of job

Material of job

Material of tool

Operation to be performed

Correct Answer- (A)

Q.11) The reamer teeth and spacing are designed to assist in reaming more accurate holes with good surface finish.Which one of the following is true regarding the number of teeth and their spacing?

Uneven number of teeth and uneven spacing

Uneven number of teeth and even spacing

Even number of teeth and uneven spacing

Even number of teeth and even spacing

Correct Answer- (C)

Q.12) The angle of drill grinding gauge is

59°

118°

121°

124°

Correct Answer- (C)

Q.13) The taper shank of a drill of 20 mm diameter has

MT-1 taper

MT-2 taper

MT-3 taper

MT-4 taper

Correct Answer- (B)

Q.14) A short reamer with an axial hole used with an arbor or mandrel is called

parallel reamer

adjustable reamer

expansion reamer

chucking reamer

Correct Answer- (D)

Q.15) The material of twist drill is generally

H.S.S.

Carbide steel

Diamond

Cast steel

Correct Answer- (A)

Q.16) Which one the following drilling machines is used for drilling holes where electricity is not available?

Bench drilling machine

Pillar drilling machine

Radial drilling machine

Ratchet drilling machine

Correct Answer- (D)

Q.17) Which of the following reamers is particularly suitable for reaming holes having keyway grooves?

Straight fluted reamer

Helical fluted reamer

Taper reamer

Pilot reamer

Correct Answer- (B)

Q.18) Which one the following reamers can adjust itself in case of slight misalignment when fitted on a tailstock?

Parallel reamer

Taper reamer

Adjustable reamer

Floating reamer

Correct Answer- (D)

Q.19) How does a hand reamer differ from a machine reamer?

Larger bevel lead for the cutting edges

More number of cutting teeth

Less number of cutting teeth

Unequal spacing of cutting edges

Correct Answer- (A)

Q.20) Which one of the following machine reamers is used to correct the misalignment between the reamer axis and the work axis?

Floating blade reamer

Shell reamer

Machine jig reamer

Chucking reamer

Correct Answer- (A)