## Machine Design MCQ Set 1

1. Which of the following are the cutting parameters used in drill?

a) cutting speed

b) feed

c) depth of cut

d) all of the mentioned

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2. Which of the following is considered as the peripheral speed of the drill?

a) cutting speed

b) feed

c) depth of cut

d) none of the mentioned

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3. Cutting speed generally express in_____

a) meter

b) meter/minute

c) meter*minute

d) none of the mentioned

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4. Formula for cutting speed is______

d=diameter of drill in mm, n=rpm of drill.

a) (d*n)/1000

b) (3.14*d*n)/1000

c) 3.14*d*n

d) none of the mentioned

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5. The ______ of a drill is the distance the drill moves into the work at each revolution of the spindle.

a) depth of cut

b) feed

c) cutting speed

d) none of the mentioned

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6. The feed may be expressed in______

a) mm/revolution

b) mm*revolution

c) mm

d) none of the mentioned

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7. ______ is equal to half the diameter of the drill used.

a) feed

b) depth of cut

c) machining time

d) none of the mentioned

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8. Depth of cut can be expressed in______

a) mm

b) mm/revolution

c) mm/minute

d) none of the mentioned

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9. The formula for depth of cut is______

d=diameter of the drill.

a) d/4

b) d/2

c) d

d) 2d

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10. If s2=feed per revolution, s1=feed per minute, n=rpm.

Which of the following is mathematically right?

a) s1=s2*n

b) s2=s1*n

c) s1*s2=n

d) none of the mentioned

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11. Machining time is expressed in______

a) mm/minute

b) minute*minute

c) minute

d) none of the mentioned

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12. If l=length of travel of the drill in mm, n=rpm of the drill, s= feed per revolution of the drill in mm. Then machining time can be given as_____

a) (l*n)/s

b) (l*s)/n

c) l/(n*s)

d) none of the mentioned

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13. Metal removal rate can be given as_____

a) (mm*mm*mm)/min

b) (mm*mm*m)/revolution

c) mm/revolution

d) mm/minute

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## Machine Design MCQ Set 2

1. A hole is being drilled with 5 mm drill at a feed of 0.1 mm/revolution and rpm is 200. Calculate the metal removal rate (m) in mm^{3}/minute.

a) 392.5

b) 785

c) 1570

d) none of the mentioned

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2. If drill is 2.5 mm, feed is 0.35 mm/revolution and metal removal rate is 40 mm^{3}/minute. Then find out the value of rpm.

a) 46.6

b) 23.3

c) 93.2

d) 11.65

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3. If drill is 5.5 mm, metal removal rate is 65 mm^{3}/minute and rpm is 130.Then find the value of feed in mm/revolution.

a) 0.02

b) 0.2

c) 0.04

d) 0.4

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4. If metal removal rate is 120 mm^{3}/minute, rpm is 105 and feed is 0.1 mm/revolution. Then find the value of drill in mm.

a) 14.6

b) 3.8

c) 7.6

d) 1.9

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5. If value of the diameter of the drill (d2) = 10mm, then find the value of the depth of cut (d1).

a) 5

b) 10

c) 20

d) none of the mentioned

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6. The diameter of the drill is 15 mm and rpm of drill is 5. Find the value of cutting speed in meter/minute.

a) 235.5

b) 0.2355

c) 0.075

d) 75

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7. Rpm is 10 and feed per revolution (f2) is 5. Then find the value of feed per minute (f1).

a) 2

b) 4

c) 1

d) none of the mentioned

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8. If depth of cut is 20 mm, then find the value of diameter of the drill.

a) 10

b) 20

c) 40

d) none of the mentioned

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9. Feed per minute (f1) is 20 and rpm (n) is 5. Then find the value of feed per revolution (f2).

a) 2

b) 4

c) 1

d) 0.5

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10. If t=2minute, n=2rpm and s=5 mm. Then find the value of l. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.

a) 5

b) 10

c) 20

d) none of the mentioned

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11. If d=2, n=1 and f=2. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm^{3}/minute.

a) 3.14

b) 6.28

c) 12.56

d) none of the mentioned

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12. If d=2, n=2 and m=3. Then find the value of f. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm^{3}/minute.

a) 0.238

b) 0.477

c) 0.119

d) none of the mentioned

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13. If m=5, n=2 and f=3. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm^{3}/minute.

a) 1.03

b) 1.065

c) 0.266

d) none of the mentioned

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14. If cs=0.942 and d=60, then find the value of n. d=diameter of drill in mm, n=rpm and cs=cutting speed in mm/minute.

a) 15.7

b) 15700

c) 5

d) 5000

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## Machine Design MCQ Set 3

1. A hole is being drilled with 1.5mm drill at a feed of 0.3 mm/revolution and rpm is 70. Calculate the metal removal rate in mm^{3}/minute.

a) 18.5

b) 37

c) 74

d) 148

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2. If drill is 2 mm, feed is 0.2 mm/revolution and metal removal rate is 50 mm^/minute. Then find out the value of rpm.

a) 318.4

b) 159.2

c) 79.6

d) 39.8

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3. If drill is 3.15 mm, metal removal rate is 55 mm^{3}/minute and rpm is 170.Then find the value of feed in mm/revolution.

a) 0.02

b) 0.2

c) 0.04

d) 0.4

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4. If metal removal rate is 100 mm^{3}/minute, rpm is 165 and feed is 0.01 mm/revolution. Then find the value of drill in mm.

a) 8.78

b) 4.41

c) 19.3

d) 77.8

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5. If diameter of the drill is 20 mm. Then find the value of depth of cut in mm.

a) 20

b) 10

c) 40

d) none of the mentioned

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6. The diameter of the drill is 20 mm and rpm of drill is 10. Find the value of cutting speed in meter/minute.

a) 0.628

b) 628

c) 0.2

d) 200

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7. Feed per minute (f1) is 10 and feed per revolution (f2) is 5. Then find the value of rpm.

a) 2

b) 4

c) 1

d) 0.5

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8. If the depth of cut (d1) is 10mm, then find the value of the diameter of the drill (d2).

a) 5

b) 10

c) 20

d) none of the mentioned

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9. If l=10mm, n=2 rpm and s=5 mm. Then find the value of t. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.

a) 0.5

b) 1

c) 2

d) none of the mentioned

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10. If l=10mm, n=2 rpm and t=0.5 minute. Then find the value of s. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.

a) 5

b) 10

c) 20

d) none of the mentioned

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11. If l=20 mm, t=2 minute and s=5 mm. Then find the value of t. t=machining time in minute, l=length of travel of the drill in mm, n= rpm of the drill and s=feed per revolution of the drill in mm.

a) 0.5

b) 1

c) 2

d) none of the mentioned

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12. If d=1, n=1 and f=4. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm^{3}/minute.

a) 0.08

b) 1

c) 0.3184

d) none of the mentioned

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13. If d=2, n=4 and f=1. Then find the value of m. d= diameter of drill in mm, n=rpm, f=feed per revolution in mm and m=metal removal rate in mm^{3}/minute.

a) 0.798

b) 1

c) 0.6369

d) none of the mentioned

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14. If cs=1 and n=40, then find the value of d. d=diameter of drill in mm, n=rpm and cs=cutting speed in mm/minute.

a) 7.96

b) 3.98

c) 15.92

d) none of the mentioned

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## Machine Design MCQ Set 4

1. Tapping is carried out by using tap tool.

a) true

b) false

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2. Which of the following operation is carried out to make the hole dimensionally more accurate?

a) reaming

b) tapping

c) boring

d) none of mentioned

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3. Which of the following operation is performed to provide recess for bolt heads or nuts?

a) counterboring

b) spot facing

c) tapping

d) none of the mentioned

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4. Reaming is carried out by using a reamer.

a) true

b) false

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5. Which of the following process is carried out to provide seating for head of screw?

a) counterboring

b) countersinking

c) tapping

d) none of the mentioned

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6. Countersinking process is carried out by using countersink tool.

a) true

b) false

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7. Taping process employs high operating conditions.

a) true

b) false

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8. To produce more accurate holes, which of the following operation should be performed third?

a) drilling

b) reaming

c) centering

d) boring

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9. To produce more accurate holes, which of the following operation should be performed second?

a) drilling

b) reaming

c) centering

d) boring

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10. Which of the following operation is used to enlarge the previously drilled hole?

a) reaming

b) tapping

c) boring

d) none of mentioned

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## Machine Design MCQ Set 5

1. A taper may be defined as a uniform gradual_____ along the length of the job.

a) increase

b) decrease

c) increase or decrease

d) none of the mentioned

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2. The taper is measured in terms of radius along the length of the job.

a) true

b) false

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3. In a lathe, taper turning means to produce a_____ surface by gradually decreasing the value of diameter from a cylindrical work piece.

a) conical surface

b) flat surface

c) both conical and flat surface

d) none of the mentioned

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4. Which of the following is not true for taper turning?

a) taper turning is one type of lathe operation

b) the amount of taper is specified by the ratio of its length to the difference in the diameter of the taper

c) amount of taper is designated by the letter K

d) none of the mentioned

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5. Amount of taper in a work piece is termed as conicity.

a) true

b) false

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6. The SI unit of taper is_____

a) meter

b) centimeter

c) millimeter

d) none of the mentioned

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7. Full taper angle is also known as angle of taper.

a) true

b) false

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8. Which of the following is the right formula for taper?

a) K= (D-d) / L

b) K= L / (D-d)

c) K= D/ L

d) none of the mentioned

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9. Find the value of K. D= 90 mm, d=80 mm, L=1cm.

a) 1

b) 10

c) 100

d) none of the mentioned

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10. Find the value of d. K=1/10, L= 10 cm, D=65 mm.

a) 45 mm

b) 55 cm

c) 75 mm

d) none of the mentioned

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11.The mentioned figure indicates_____

a) knurling

b) parting off

c) taper turning

d) none of the mentioned