Milling, Drilling And Reaming ( Manufacturing Engineering – I ) MCQs – Mechanical Engineering MCQs
Latest Mechanical Engineering MCQs
By practicing these MCQs of Milling, Drilling And Reaming ( Manufacturing Engineering – I ) MCQs – Latest Competitive MCQs , an individual for exams performs better than before. This post comprising of objective questions and answers related to “ Milling, Drilling And Reaming ( Manufacturing Engineering – I ) Mcqs “. As wise people believe “Perfect Practice make a Man Perfect”. It is therefore practice these mcqs of Mechanical Engineering to approach the success. Tab this page to check ” Milling, Drilling And Reaming ( Manufacturing Engineering – I )” for the preparation of competitive mcqs, FPSC mcqs, PPSC mcqs, SPSC mcqs, KPPSC mcqs, AJKPSC mcqs, BPSC mcqs, NTS mcqs, PTS mcqs, OTS mcqs, Atomic Energy mcqs, Pak Army mcqs, Pak Navy mcqs, CTS mcqs, ETEA mcqs and others.
Mechanical Engineering MCQs – Milling, Drilling And Reaming ( Manufacturing Engineering – I ) MCQs
The most occurred mcqs of ( ) in past papers. Past papers of Milling, Drilling And Reaming ( Manufacturing Engineering – I ) Mcqs. Past papers of Milling, Drilling And Reaming ( Manufacturing Engineering – I ) Mcqs . Mcqs are the necessary part of any competitive / job related exams. The Mcqs having specific numbers in any written test. It is therefore everyone have to learn / remember the related Milling, Drilling And Reaming ( Manufacturing Engineering – I ) Mcqs. The Important series of Milling, Drilling And Reaming ( Manufacturing Engineering – I ) Mcqs are given below:
Geometry of Twist Drills-1
1. Part of twist drill which carries flutes and extends from dead centre up to the start of the neck is known as
a) Body
b) Point
c) Lip
d) Chisel edge
Answer: a
Explanation: Body of twist drill carries flutes and extends from dead centre up to the start of a neck. This is the longest part of a twist drill.
2. Part of drill between neck and tang is known as
a) Body
b) Point
c) Shank
d) Chisel edge
Answer: c
Explanation: Shank of twist drill is between neck and tang.
3. Edge formed at extreme tip due to the intersection of flanks, is known as
a) Body
b) Point
c) Lip
d) Chisel edge
Answer: d
Explanation: Chisel edge is formed at extreme tip due to the intersection of flanks. It is at the extreme edge of chisel edge.
4. Cone shaped surface formed at the end of the flutes which contains dead centre, lips and flanks etc. is known as
a) Body
b) Point
c) Lip
d) Chisel edge
Answer: b
Explanation: Point is a Cone shaped surface formed at the end of the flutes which contains dead centre, lips and flanks etc. It is at the end part of the twist drill.
5. Main cutting part of drill is
a) Body
b) Point
c) Lip
d) Chisel edge
Answer: c
Explanation: Lip is the main cutting part of the drill and is also called cutting edge. Material removed first at chisel edge.
6. Intersection of each faces and flank form
a) Body
b) Point
c) Lip
d) Chisel edge
Answer: a
Explanation: Lip is the main cutting part of the drill and is also called cutting edge. It is formed at Intersection of each faces and flank.
7. Small clearance provided in diameter of twist drills adjacent to land is known as
a) Body clearance
b) Point clearance
c) Lip clearance
d) Chisel edge clearance
Answer: a
Explanation: Body clearance is provided in diameter of twist drills adjacent to land. This clearance help in the removal of material during cutting.
8. Which of the following help in reducing friction between drill and the walls of the hole in twist drills?
a) Body clearance
b) Point clearance
c) Lip clearance
d) Chisel edge clearance
Answer: a
Explanation: Body clearance reduces friction between drill and the walls. It helps in smooth drilling of holes during the operation.
9. Narrow flat surface running along flutes of twist drill on its leading edge is known as
a) Body
b) Point
c) Lip
d) Land
Answer: d
Explanation: Land is the narrow flat surface running along flutes of twist drill on its leading. It is the flat part of a twist drill.
10. Narrow flat surface running along flutes of twist drill on its leading edge is known as
a) Body
b) Point
c) Lip
d) Margin
Answer: d
Explanation: Margin is the narrow flat surface running along flutes of twist drill on its leading. It is also known as land.
Geometry of Twist Drills-2
1. Small part of conical surface of a point which is grounded to provide relief near the cutting edge in twist drills is known as
a) Lip clearance
b) Face
c) Flute
d) Flank
Answer: a
Explanation: Lip clearance is a Small part of conical surface of a point which is grounded to provide relief near the cutting edge.
2. In twist drills, curved surface of flute near the lip is known as
a) Lip clearance
b) Face
c) Flute
d) Flank
Answer: b
Explanation: Face is the curved surface of flute near the lip. Lip clearance is a Small part of conical surface of a point which is grounded to provide relief near the cutting edge.
3. In twist drills helical grooves in the body of drill are called
a) Lip clearance
b) Face
c) Flute
d) Flank
Answer: c
Explanation: Flutes are grooves in the body of a drill. These grooves are helical in shape. They provide passage for chip flow.
4. Which of the following part of twist drill is responsible for making chips curl and provide passage for chip flow?
a) Lip clearance
b) Face
c) Flute
d) Flank
Answer: c
Explanation: Flutes are grooves in the body of a drill. These grooves are helical in shape. They provide passage for chip flow.
5. In twist drills, curved surface on either side of dead centre, confined between lip on its on its one side and face of the flute on its other side is called
a) Lip clearance
b) Face
c) Flute
d) Flank
Answer: d
Explanation: Flank is on either side of dead centre. Curved surface on either side of dead centre, confined between lip on its on its one side and face of the flute on its other side is called flank.
6. Which of the following separate flute from each other in twist drills?
a) Web
b) Chisel edge corner
c) Outer corner
d) Neck
Answer: a
Explanation: Web is a central metal column and separates flutes.
7. In twist drills, chisel edge and lip intersect at
a) Web
b) Chisel edge corner
c) Outer corner
d) Neck
Answer: b
Explanation: Chisel edge corner is the point where chisel edge and lip intersects.
8. In twist drills, face and flank intersect at a corner at the extreme of dead centre, that corner is known as
a) Web
b) Chisel edge corner
c) Outer corner
d) Neck
Answer: c
Explanation: At outer corner face and flak intersects. Face and flank intersect at corner at the extreme of dead centre, that corner is known as outer corner.
9. Which of the following part of twist drill separates body from shank?
a) Web
b) Chisel edge corner
c) Outer corner
d) Neck
Answer: d
Explanation: Neck separates body and shank.
10. In twist drills, end of tapered shank is attached to
a) Web
b) Chisel edge corner
c) Outer corner
d) Tang
Answer: d
Explanation: Tang is a flat portion with rectangular cross section provided at the end of shank.
11. In twist drills, Edge formed by an intersection of body clearance and flute is known as
a) Web
b) Chisel edge corner
c) Heel
d) Neck
Answer: c
Explanation: Heel is an edge formed by an intersection of body clearance and flute.
Geometry of Twist Drills-3
1. Length measured along the axis between the dead centre and start of neck of a twist drill is known as
a) Body length
b) Flute length
c) Lip length
d) Overall length
Answer: a
Explanation: Body length is the length measured along the axis between the dead centre and start of neck. Flute length is the length measured parallel to the axis between the dead centre and the point of termination of flute near the neck.
2. Length measured parallel to the axis between the dead centre and the point of termination of flute near the neck is known as
a) Body length
b) Flute length
c) Lip length
d) Overall length
Answer: b
Explanation: Flute length is the length measured parallel to the axis between the dead centre and the point of termination of flute near the neck. Body length is the length measured along the axis between the dead centre and start of neck.
3. In twist drill, distance measured between the chisel edge corner and the outer corner is known as
a) Body length
b) Flute length
c) Lip length
d) Overall length
Answer: c
Explanation: Lip length is the length measured between the chisel edge corner and the outer corner. Body length is the length measured along the axis between the dead centre and start of a neck.
4. In twist drills, length measured along the axis between the dead centre and the extreme end of the tang is known as
a) Body length
b) Flute length
c) Lip length
d) Overall length
Answer: d
Explanation: Overall length is the length measured along the axis between the dead centre and the extreme end of the tang. Body length is the length measured along the axis between the dead centre and start of neck.
5. Reduction in body diameter measured along the radius of twist drill is known as
a) Body length
b) Lead of helix
c) Depth of body clearance
d) Core taper
Answer: c
Explanation: Depth of body clearance is a reduction in body diameter measured along radius of twist drill.
6. Web taper is also known as
a) Body length
b) Lead of helix
c) Depth of body clearance
d) Core taper
Answer: d
Explanation: Core taper is the increase in core thickness. Web taper is also known as core taper.
7. Measure of increase in web thickness or core thickness, starting from the minimum at the point end to the maximum at the shank end of twist drill
a) Body length
b) Lead of helix
c) Depth of body clearance
d) Core taper
Answer: d
Explanation: Core taper or web taper is the measure of the increase in web thickness or core thickness, starting from the minimum at the point end to the maximum at the shank end of twist drill.
8. Axial distance measured between two corresponding points on a flute in its one complete turn in twist drill is known as
a) Body length
b) Lead of helix
c) Depth of body clearance
d) Core taper
Answer: b
Explanation: Lead helix is the axial distance measured between two corresponding points on a flute in its one complete turn in twist drill.
9. Rake angle of drill is also as
a) Taper angle
b) Friction angle
c) Helix angle
d) None of the mentioned
Answer: c
Explanation: Helix angle of drill is also known as rake angle. Lead helix is the axial distance measured between two corresponding points on a flute in its one complete turn in twist drill.
10. Which of the following is correct about helix angle for right hand flute drill?
a) Positive
b) Negative
c) Zero
d) None of the mentioned
Answer: a
Explanation: Helix angle have positive value for right handed flute. Helix angle of drill is also known as rake angle.
Geometry of Twist Drills-4
1. Which of the following is correct about helix angle for left hand flute drill?
a) Positive
b) Negative
c) Zero
d) None of the mentioned
Answer: b
Explanation: Helix angle have negative value for right handed flute.
2. Which of the following is correct about helix angle for parallel flute drill?
a) Positive
b) Negative
c) Zero
d) None of the mentioned
Answer: c
Explanation: Helix angle have zero value for right handed flute.
3. Which of the following drill is most suitable for softer material?
a) 48 degree helix angle drill
b) 68 degree helix angle drill
c) 58 degree helix angle drill
d) 18 degree helix angle drill
Answer: d
Explanation: Helix angle with lower value is more suitable for soft material. Helix angle have negative value for right handed flute.
4. When the value of helix angle increases in drills, the value of required torque for rotation of drill will
a) Increase
b) Decrease
c) First increase then decrease
d) First decrease then increase
Answer: b
Explanation: Torque required is inversely proportional to helix angle of drill. When the value of helix angle increases in drills, the value of required torque for rotation of drill will increase.
5. Point angle of drill is also known as
a) Taper angle
b) Friction angle
c) Helix angle
d) Cutting angle
Answer: c
Explanation: Point angle of drill is also known as cutting angle. Small point angle drills are favored for brittle material because brittle material has low chip flow. Small point angle makes drill strong. But it reduces the passage area for chip flow.
6. Which of the following drill will be most suitable for drilling of brittle material?
a) Small point angle drill
b) Large point angle drill
c) Zero point angles drill
d) None of the mentioned
Answer: a
Explanation: Small point angle drills are favored for brittle material because brittle material has low chip flow. Small point angle makes drill strong. But it reduces the passage area for chip flow. Point angle of drill is also known as cutting angle.
7. Which of the following drill will be most suitable for drilling of ductile and soft material?
a) Small point angle drill
b) Large point angle drill
c) Zero point angles drill
d) None of the mentioned
Answer: b
Explanation: Large point angle drills are favored for ductile material because ductile material has high chip flow. Large point angle makes drill weak but increases chip flow passage area. Point angle of drill is also known as cutting angle.
8. Clearance in drill is
a) Directly proportional to chisel edge angle
b) Inversely proportional to chisel edge angle
c) Does not depend on chisel edge angle
d) None of the mentioned
Answer: a
Explanation: Greater the chisel edge angle larger will be the clearance.
9. For drilling of brass work piece, most suitable rake angle in degrees for drill will be
a) 12
b) 15
c) 0
d) -9
Answer: c
Explanation: Brass is neither brittle nor ductile and hence zero rake angle is preferred for drilling of brass work piece.
10. Which of the following is most suitable range of lip clearance angel in degrees for drilling of aluminum work piece?
a) 8-12
b) 3-2
c) 50-60
d) None of the mentioned
Answer: a
Explanation: 8 degree to 12 degree is the best range of lip clearance angle for most of the operations.
Drilling
1. Producing circular hole in a solid metal by means of revolving tool is known as
a) Drilling
b) Reaming
c) Boring
d) Counter boring
Answer: a
Explanation: Drilling is defined as production of generally circular hole by using a revolving tool.
2. Operation of finishing previously drilled hole in order to bring it to accurate size and have good surface finish is known as
a) Drilling
b) Reaming
c) Boring
d) Counter boring
Answer: b
Explanation: Reaming is a finishing operation of drilled hole. It is done to improve surface finish of drilled hole.
3. Process of enlarging the hole size and enhancing its surface finish is known as
a) Drilling
b) Reaming
c) Boring
d) Counter boring
Answer: c
Explanation: Once the hole is drilled by using drilling operation, later the diameter of hole can be increased by using boring operation.
4. Process of enlarging only a small part of hole is also known as
a) Drilling
b) Reaming
c) Boring
d) Counter boring
Answer: d
Explanation: Once the hole is drilled by using drilling operation, later the diameter of some part of hole can be increased by using counter boring operation.
5. Operation of enlarging the end of the hole to give conical shape at end is known as
a) Drilling
b) Reaming
c) Boring
d) Counter sinking
Answer: d
Explanation: Once the hole is drilled by using drilling operation, later the ends of hole can be machined into conical shape for proper adjustment of washer or other machine parts by using Counter sinking operation.
6. Operation used to form internal threads is known as
a) Drilling
b) Reaming
c) Boring
d) Tapping
Answer: d
Explanation: Tapping is the process of forming internal threads by means of tool called tap.
7. If ‘D’ is hole diameter, then general value for a compulsory approach for through hole can be taken as
a) 0.3*D
b) 0.1*D
c) 0.5*D
d) 0.8*D
Answer: c
Explanation: For through hole, X = 0.5*D.
8. If ‘D’ is hole diameter, then general value for a compulsory approach for blind hole can be taken as
a) 0.3*D
b) 0.1*D
c) 0.5*D
d) 0.8*D
Answer: a
Explanation: For through hole, X = 0.3*D.
9. If 20mm hole is needed to be drilled using a drill having semi point angle of 15 degrees. Value of compulsory approach in mm is
a) 37.2
b) 45.3
c) 87.1
d) 13.3
Answer: a
Explanation: X = (D/2)/ (tan (semi point angle)).
10. If 20mm hole is needed to be drilled using a drill having point angle of 15 degrees. Value of compulsory approach in mm is
a) 37.2
b) 45.3
c) 75.95
d) 13.3
Answer: c
Explanation: X = (D/2)/ (tan (semi point angle)). Semi point angle = point angle/2.
Reaming
1. Helical groves on a body of reamers are known as
a) Flutes
b) Face
c) Heel
d) Recess
Answer: a
Explanation: Flutes are helical grooves present on the body of reamers. They help in better machining process using reamers.
2. In reamers, flute surface adjacent to cutting is known as
a) Flutes
b) Face
c) Heel
d) Recess
Answer: b
Explanation: Face of reamers is adjacent to cutting edge. They help in cutting during machining process using reamers.
3. Small flat surface in between cutting edge and the heel of a reamer is known as
a) Flutes
b) Face
c) Heel
d) Land
Answer: d
Explanation: Land is the small narrow surface between cutting edge and heel. They help in better machining process using reamers.
4. In reamers, edge formed by an intersection of secondary clearance and flute is known as
a) Flutes
b) Face
c) Heel
d) Recess
Answer: c
Explanation: Heel is the edge formed by an intersection of secondary clearance and flute. They help in better machining process using reamers.
5. Reduction in body diameter toward shank of reamer is known as
a) Flutes
b) Face
c) Heel
d) Recess
Answer: d
Explanation: Recess is the reduction in body diameter toward shank. They help in better machining process using reamers.
6. Maximum diameter of reamer at entering is also known as
a) Flutes
b) Face
c) Actual size
d) Recess
Answer: c
Explanation: Actual size of reamer is the maximum diameter of the reamer.
7. Portion of reamer which carries flute is known as
a) Flutes
b) Face
c) Body
d) Recess
Answer: c
Explanation: Body carries flute on it. Face of reamers is adjacent to cutting edge.
8. Tapered of reamer by which it can be gripped is known as
a) Flutes
b) Face
c) Heel
d) Shank
Answer: d
Explanation: Shank is used for gripping reamers and rotating. Face of reamers is adjacent to cutting edge.
9. Longitudinal center line which is concentric with diameter of reamer is known as
a) Flutes
b) Axis
c) Heel
d) Recess
Answer: b
Explanation: Axis divides reamers in two symmetric part.
10. If reamer is found to be cutting while rotating in clockwise direction when viewed against the entering end at a right angle to it is known as
a) Left handed reamer
b) Central reamer
c) Right handed reamer
d) None of the mentioned
Answer: a
Explanation: Left handed reamer rotate in clockwise during cutting when viewed against the entering end at right angle.
11. If reamer is found to be cutting while rotating in anti-clockwise direction when viewed against the entering end at a right angle to it is known as
a) Left handed reamer
b) Central reamer
c) Right handed reamer
d) None of the mentioned
Answer: c
Explanation: Right handed reamer rotate in anti-clockwise during cutting when viewed against the entering end at right angle.