Manufacturing Design MCQs

These Manufacturing Design multiple-choice questions and their answers will help you strengthen your grip on the subject of Manufacturing Design. You can prepare for an upcoming exam or job interview with these 70+ Manufacturing Design MCQs.
So scroll down and start answering.

1: The value of the groove angle of the pulley for rope drive is ___________.

A. 0°

B. 45°

C. 90°

D. 120°

2: Calculate the bending moment of a circular fillet weld made between a rod of 20 millimeters diameter and a plate. The maximum bending stress on the fillet weld is 100 newtons per square millimeter. The size of the weld is 10 millimeters.

A. 2.2 x 10⁵ newton millimeters

B. 3.5 x 10⁵ newton millimeters

C. 5 x 10⁵ newton millimeters

D. 6 x 10⁵ newton millimeters

3: For a plate thickness ranging between 10 millimeters to 16 millimeters, the minimum weld size will be __________.

A. 14 millimeters

B. 20 millimeters

C. 6 millimeters

D. 10 millimeters

4: Calculate the pitch of a thread, given that the number of threads per unit length of screw is 10.

A. 1

B. 0.1

C. 0.01

D. 0.001

5: If the diameter of a thread is 100 millimeters calculate the core diameter of the thread.

A. 84 millimeters

B. 8.4 millimeters

C. 0.84 millimeters

D. 840 millimeters

6: Calculate the length of the shaft on which a torque of 10 newton millimeters is applied. The polar moment of inertia on the shaft is 10 (millimeter)⁴. The angle of twist of the shaft is 10 radians and the modulus of rigidity is 10 newtons per square millimeter.

A. 50 millimeters

B. 100 millimeters

C. 150 millimeters

D. 200 millimeters

7: The resistance of a bolt can be increased by _________.

A. increasing the shank diameter of the bolt

B. increasing the length of the bolt

C. decreasing the shank diameter of the bolt

D. decreasing the length of the bolt

8: Which property among the following should have the lowest value while selecting a material for sliding contact bearing?

A. thermal conductivity

B. compressive strength

C. coefficient of thermal expansion

D. bondability

9: If the twisting moment in the hollow shaft is _______ the twisting moment of the solid shaft, then the strength of the hollow shaft becomes equal to the strength of the solid shaft.

A. less than

B. greater than

C. equal to

10: If the shaft diameter is 20 millimeters, calculate the pitch circle diameter of the bolts for a flange coupling.

A. 60 millimeters

B. 80 millimeters

C. 120 millimeters

D. 140 millimeters

11: If the tension on the tight side of a belt is 10 newtons, the tension on the slack side is 5 newtons and the velocity of the belt is 10 meters per second, calculate the power transmitted by the belt.

A. 40 watts

B. 50 watts

C. 60 watts

D. 70 watts

12: The value of taper of a gib head key is ___________.

A. 1:100

B. 1:50

C. 1:10

D. 1:25

13: The value of the stress concentration factor for static loading for a lap joint or a butt joint is _____.

A. 1

B. 1.2

C. 1.5

D. 2

14: __________ theory is relevant to ductile materials.

A. Guest's

B. Maximum normal stress

C. Rankine

D. Von mises

15: Calculate the resilience of a body having a volume of 1000 cubic meters, which is subjected to a stress of 60 newtons per square meter. The Youngs modulus for the material of the body is 2 x 105 newtons per square meter.

A. 8 newtons per meter

B. 9 newtons per meter

C. 10 newtons per meter

D. 12 newtons per meter

16: What is the value of impact stress on gradually applied loads?

A. 1

B. 2

C. 2.5

D. 3

17: Calculate the crushing area per rivet, given that the diameter of the rivet hole is 20 millimeters and the thickness of the plate on which the riveting is done is 30 millimeters.

A. 600 square millimeters

B. 400 square millimeters

C. 900 square millimeters

D. 430 square millimeters

18: Which type of nut among the following is used on objects which are subjected to sudden shocks and vibrations?

A. Jam nut

B. Sawn nut

C. Castle nut

D. Penn nut

E. Lock nut

19: Calculate the factor of safety of a key in crushing, given that the yield stress in crushing is 400 newtons per square millimeter and crushing stress induced in the key is 100 newtons per square millimeter

A. 1

B. 2

C. 3

D. 4

E. 5

20: In which among the following types of gear does the pressure angle remains constant?

A. cycloidal gear

B. involute gear

C. worm and wheel gear

D. herringbone gear

21: In the above drawn Mohrs circle for stress, which is the angle of obliquity?

A. angle BCA

B. angle BEA

C. angle BDA

22: Calculate the maximum shear stress in a circular fillet weld made between a circular rod of 50 millimeters diameter and a plate subjected to a torsional moment of 100 newton millimeters. The size of the weld is 5 millimeters and the diameter of the circular rod is 2 millimeters.

A. 2.3 newtons per square millimeter

B. 3.5 newtons per square millimeter

C. 4.5 newtons per square millimeter

D. 5 newtons per square millimeter

23: The diameter of a shaft is 100 millimeters. Calculate the width of the key.

A. 25 millimeters

B. 50 millimeters

C. 65 millimeters

D. 75 millimeters

24: If the rivet hole diameter is 19.5 millimeters, calculate the nominal diameter of the rivet.

A. 16 millimeters

B. 18 millimeters

C. 20 millimeters

D. 22 millimeters

25: Calculate the flexural rigidity of a beam, given that the bending moment of the beam is 20, Youngs modulus is 2 x 10⁵ newtons per square meter and the moment of inertia is 20 (millimeter)⁴.

A. 40 x 10⁵ newtons per square meter

B. 20 x 10⁵ newtons per square meter

C. 10 x 10⁵ newtons per square meter

D. 2 x 10⁵ newtons per square meter

26: If the diameter of the rivet hole is 10 millimeters, calculate the shearing area at the cross section of the rivet.

A. 78.5 millimeters

B. 7.85 millimeters

C. 785 millimeters

D. 0.785 millimeters

27: Calculate the twisting moment acting on the shaft which undergoes a torsional shear stress of 21 newtons per square millimeter. The diameter of the shaft is 300 millimeters and the polar moment of inertia of the shaft is 100 (millimeter)⁴.

A. 5 newton millimeters

B. 7 newton millimeters

C. 10 newton millimeters

D. 15 newton millimeters

28: The efficiency of a riveted joint is __________.

A. strength of a riveted joint x strength of unriveted plates

B. strength of a riveted joint - strength of unriveted plates

C. strength of a riveted joint + strength of unriveted plates

D. strength of a riveted joint / strength of unriveted plates

29: In a helical gear, the helix angle for a single helical gear ranges from _______.

A. 5° to 20°

B. 20° to 35°

C. 40° to 55°

D. 60° to 75°

30: In a screw thread, the nominal diameter represents the _________.

A. major diameter

B. minor diameter

C. pitch diameter

D. effective diameter

31: A feather key permits _____________.

A. turning moment

B. axial moment

C. both turning and axial moment

32: Which among the following is used for obtaining constant velocity ratios?

A. belts

B. ropes

C. chains

33: The value of the included angle for a V-belt is _________.

A. 10° to 20°

B. 30° to 40°

C. 50° to 60°

D. 65° to 75°

34: _________ is used only for the transmission of bending moment

A. Shaft

B. Axle

C. Spindle

D. Gear

35: Calculate the force responsible for the shearing or crushing of a key, given that the radius of the shaft is 50 millimeters and the torsional moment transmitted by the shaft is 1000 newtons millimeter

A. 10 newtons

B. 20 newtons

C. 30 newtons

D. 40 newtons

36: Calculate the maximum shear stress developed in a rectangular cross sectional beam having an average shear stress of 50 newtons per square meter.

A. 25 newtons per square meter

B. 50 newtons per square meter

C. 75 newtons per square meter

D. 100 newtons per square meter

37: The included angle in a British Standard Whitworth thread is __________.

A. 47.5°

B. 60°

C. 45°

D. 55°

38: In a full journal bearing, the angle of contact of the bearing with the journal is ________.

A. 90°

B. 180°

C. 270°

D. 360°

39: Calculate the diameter of a hole which is to be drilled in a 50 millimeters bolt, given that the core diameter is 40 millimeters

A. 10 millimeters

B. 15 millimeters

C. 25 millimeters

D. 30 millimeters

40: Calculate the power transmitted by a shaft, given that the twisting moment in the shaft is 20 newton meters and the speed of rotation of the shaft is 60 rpm.

A. 116.6 watts

B. 126.6 watts

C. 136.6 watts

D. 146.6 watts

41: Calculate the attitude of a hydrodynamic journal bearing, given that the eccentricity of the bearing is 10 and the radial clearance is 5.

A. 0.5

B. 2

C. 15

D. 50

42: Which type of belt among the following will give maximum efficiency, when used?

A. belt having a coefficient of friction of 1

B. belt having a coefficient of friction of 2

C. belt having a coefficient of friction of 3

D. belt having a coefficient of friction of 4

43: __________ is the value of ratio of the maximum shear stress with load acting parallel to the weld to the maximum shear stress when load acts perpendicular to the weld.

A. 0.675

B. 0.775

C. 0.875

D. 0.975

44: The modulus of elasticity of material A is 100 newtons per square meter and of material B is 200 newtons per square meter. Calculate the modular ratio between the two materials

A. 3

B. 2

C. 1

D. 0.5

45: Calculate the shear modulus in a material which undergoes a shear strain of 10 meters. The shear stress applied on the material is 20 newtons per square meter.

A. 2 newtons per meter

B. 10 newtons per meter

C. 200 newtons per meter

D. 30 newtons per meter

46: The mean diameter of the coil of a spring is 10 millimeters and the diameter of the spring wire is 5 millimeters. Calculate the spring index.

A. 1

B. 2

C. 3

D. 4

47: Calculate the bending stress induced in the shank of the bolt, given that the length of the bolt is 10 millimeters, Youngs modulus of material of bolt is 2 x 105 newtons per square millimeter and the difference in height between the extreme corners of the nut is 3 millimeters.

A. 3 x10⁴ newtons per square millimeter

B. 4 x 10⁴ newtons per square millimeter

C. 5 x 10⁴ newtons per square millimeter

D. 6 x 10⁴ newtons per square millimeter

48: Which bearing among the following is a hydrodynamic lubricated bearing?

A. thick film bearing

B. thin film bearing

C. zero film bearing

D. externally pressurized lubricated bearing

49: __________ is fixed at one end and free at the other end.

A. Overhanging beam

B. Continuous beam

C. Simply supported beam

D. Cantilever beam

50: Calculate the solid length of a spring, given that the number of coils in the spring is 10 and the diameter of the spring wire is 2 millimeters.

A. 5 millimeters

B. 10 millimeters

C. 15 millimeters

D. 20 millimeters

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Manufacturing Design MCQs

1: The value of the groove angle of the pulley for rope drive is ___________.

2: Calculate the bending moment of a circular fillet weld made between a rod of 20 millimeters diameter and a plate. The maximum bending stress on the fillet weld is 100 newtons per square millimeter. The size of the weld is 10 millimeters.

3: For a plate thickness ranging between 10 millimeters to 16 millimeters, the minimum weld size will be __________.

4: Calculate the pitch of a thread, given that the number of threads per unit length of screw is 10.

5: If the diameter of a thread is 100 millimeters calculate the core diameter of the thread.

6: Calculate the length of the shaft on which a torque of 10 newton millimeters is applied. The polar moment of inertia on the shaft is 10 (millimeter)4. The angle of twist of the shaft is 10 radians and the modulus of rigidity is 10 newtons per square millimeter.

7: The resistance of a bolt can be increased by _________.

8: Which property among the following should have the lowest value while selecting a material for sliding contact bearing?

9: If the twisting moment in the hollow shaft is _______ the twisting moment of the solid shaft, then the strength of the hollow shaft becomes equal to the strength of the solid shaft.

10: If the shaft diameter is 20 millimeters, calculate the pitch circle diameter of the bolts for a flange coupling.

11: If the tension on the tight side of a belt is 10 newtons, the tension on the slack side is 5 newtons and the velocity of the belt is 10 meters per second, calculate the power transmitted by the belt.

12: The value of taper of a gib head key is ___________.

13: The value of the stress concentration factor for static loading for a lap joint or a butt joint is _____.

14: __________ theory is relevant to ductile materials.

15: Calculate the resilience of a body having a volume of 1000 cubic meters, which is subjected to a stress of 60 newtons per square meter. The Youngs modulus for the material of the body is 2 x 105 newtons per square meter.

16: What is the value of impact stress on gradually applied loads?

17: Calculate the crushing area per rivet, given that the diameter of the rivet hole is 20 millimeters and the thickness of the plate on which the riveting is done is 30 millimeters.

18: Which type of nut among the following is used on objects which are subjected to sudden shocks and vibrations?

19: Calculate the factor of safety of a key in crushing, given that the yield stress in crushing is 400 newtons per square millimeter and crushing stress induced in the key is 100 newtons per square millimeter

20: In which among the following types of gear does the pressure angle remains constant?

21: In the above drawn Mohrs circle for stress, which is the angle of obliquity?

22: Calculate the maximum shear stress in a circular fillet weld made between a circular rod of 50 millimeters diameter and a plate subjected to a torsional moment of 100 newton millimeters. The size of the weld is 5 millimeters and the diameter of the circular rod is 2 millimeters.

23: The diameter of a shaft is 100 millimeters. Calculate the width of the key.

24: If the rivet hole diameter is 19.5 millimeters, calculate the nominal diameter of the rivet.

25: Calculate the flexural rigidity of a beam, given that the bending moment of the beam is 20, Youngs modulus is 2 x 105 newtons per square meter and the moment of inertia is 20 (millimeter)4.

26: If the diameter of the rivet hole is 10 millimeters, calculate the shearing area at the cross section of the rivet.

27: Calculate the twisting moment acting on the shaft which undergoes a torsional shear stress of 21 newtons per square millimeter. The diameter of the shaft is 300 millimeters and the polar moment of inertia of the shaft is 100 (millimeter)4.

28: The efficiency of a riveted joint is __________.

29: In a helical gear, the helix angle for a single helical gear ranges from _______.

30: In a screw thread, the nominal diameter represents the _________.

31: A feather key permits _____________.

32: Which among the following is used for obtaining constant velocity ratios?

33: The value of the included angle for a V-belt is _________.

34: _________ is used only for the transmission of bending moment

35: Calculate the force responsible for the shearing or crushing of a key, given that the radius of the shaft is 50 millimeters and the torsional moment transmitted by the shaft is 1000 newtons millimeter

36: Calculate the maximum shear stress developed in a rectangular cross sectional beam having an average shear stress of 50 newtons per square meter.

37: The included angle in a British Standard Whitworth thread is __________.

38: In a full journal bearing, the angle of contact of the bearing with the journal is ________.

39: Calculate the diameter of a hole which is to be drilled in a 50 millimeters bolt, given that the core diameter is 40 millimeters

40: Calculate the power transmitted by a shaft, given that the twisting moment in the shaft is 20 newton meters and the speed of rotation of the shaft is 60 rpm.

41: Calculate the attitude of a hydrodynamic journal bearing, given that the eccentricity of the bearing is 10 and the radial clearance is 5.

42: Which type of belt among the following will give maximum efficiency, when used?

43: __________ is the value of ratio of the maximum shear stress with load acting parallel to the weld to the maximum shear stress when load acts perpendicular to the weld.

44: The modulus of elasticity of material A is 100 newtons per square meter and of material B is 200 newtons per square meter. Calculate the modular ratio between the two materials

45: Calculate the shear modulus in a material which undergoes a shear strain of 10 meters. The shear stress applied on the material is 20 newtons per square meter.

46: The mean diameter of the coil of a spring is 10 millimeters and the diameter of the spring wire is 5 millimeters. Calculate the spring index.

47: Calculate the bending stress induced in the shank of the bolt, given that the length of the bolt is 10 millimeters, Youngs modulus of material of bolt is 2 x 105 newtons per square millimeter and the difference in height between the extreme corners of the nut is 3 millimeters.

48: Which bearing among the following is a hydrodynamic lubricated bearing?

49: __________ is fixed at one end and free at the other end.

50: Calculate the solid length of a spring, given that the number of coils in the spring is 10 and the diameter of the spring wire is 2 millimeters.

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6: Calculate the length of the shaft on which a torque of 10 newton millimeters is applied. The polar moment of inertia on the shaft is 10 (millimeter)⁴. The angle of twist of the shaft is 10 radians and the modulus of rigidity is 10 newtons per square millimeter.

25: Calculate the flexural rigidity of a beam, given that the bending moment of the beam is 20, Youngs modulus is 2 x 10⁵ newtons per square meter and the moment of inertia is 20 (millimeter)⁴.

27: Calculate the twisting moment acting on the shaft which undergoes a torsional shear stress of 21 newtons per square millimeter. The diameter of the shaft is 300 millimeters and the polar moment of inertia of the shaft is 100 (millimeter)⁴.