Design for Manufacturability MCQs

Design for Manufacturability MCQs

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

1: Which material is the mold in plaster mold casting made of?

A.   Al2O3

B.   CaSO4-H2O

C.   SiC

D.   SiO2

2: Which of the following method is used for the production of gear using generation process?

A.   Milling

B.   Broaching

C.   Punching

D.   Hobbing

3: A _____________ is a thermoforming mold having a convex shape.

A.   negative mold

B.   three-plate mold

C.   positive mold

D.   die

4: In the context of computer graphics, WCS stands for:

A.   Web CAD System

B.   Worldwide CAD Sectors

C.   Web Coordinate Sectors

D.   World Coordinate System

5: Which design characteristics are easy to achieve by pressing and sintering of metal powders?

A.   Outside rounded corners

B.   Threaded holes

C.   Vertical stepped holes

D.   Side holes

6: Die casting involves usage of which of the following metals?

A.   Tungsten

B.   Cast iron

C.   Steel

D.   Tin

7: The ____________ process is a type of fusion welding.

A.   diffusion welding

B.   resistance welding

C.   roll welding

D.   riction welding

8: Another name for indirect extrusion is ______.

A.   direct extrusion

B.   forward extrusion

C.   backward extrusion

D.   impact extrusion

9: Sheet metal working operations are mainly carried out as:

A.   hot working

B.   warm working

C.   cold working

D.   None of these

10: Which of the following powder shapes is likely to have the lowest interparticle friction?

A.   Spherical

B.   Hemispherical

C.   Circular

D.   Triangular

11: A ______ is an irregularity in the metal casting process that must be corrected or removed or the casting must be rejected.

A.   casting discontinuity

B.   casting defect

C.   casting bug

D.   casting error

12: Identify the soldering methods that are NOT applied with brazing.

A.   Soldering iron

B.   Wave soldering

C.   Torch soldering

D.   Infrared soldering

E.   Dip soldering

13: Which of the following processes can be carried out using CNC equipment?

A.   Laser cutting

B.   Ultrasonic welding

C.   Plasma cutting

D.   Picking and placing

E.   Tape and fiber placement

F.   All of the above

14: Which of the following is NOT a manufacturing requirement?

A.   Assembly

B.   Standards

C.   Delivery date

D.   Materials

15: Which machine tool is used in sheet metal working?

A.   Drill press

B.   Stamping press

C.   Lathe

D.   Gear shaper

16: Which of the following processes is/are used to produce cold-finished steel from hot-rolled material?

A.   Cold drawing

B.   Hot rolling

C.   Machining

D.   (a) & (c)

E.   (b) & (c)

17: Which casting method is followed for creating dental crowns?

A.   Glass casting

B.   Investment casting

C.   Slip casting

D.   Sand Casting

18: __________ means that factors relating to the product after it has been manufactured should be taken into consideration in design.

A.   Design for life cycle

B.   Design for manufacturing and assembly

C.   Design for cost

D.   Design for quality

19: In a machining operation, the metal is removed by:

A.   distorting it.

B.   shearing it across a zone.

C.   cutting it across a zone.

D.   tearing chips.

20: Which of the following are types of forging operations?

A.   Fullering

B.   Roll piercing

C.   Swaging

D.   Upsetting

21: The acronym DTP stands for ______

A.   Desktop publishing

B.   Drawing publishing

C.   Design publishing

D.   Drafting publishing

22: Which one of the following casting metals is most important economically?

A.   Cast stee

B.   Bronze

C.   Zinc alloys

D.   Cast iron

23: Which of the following are major components of a CNC machine?

A.   Machine too

B.   Tracer Control

C.   Servos and selsyns

D.   Machine Control Unit

24: The process of verifying a product's speed, consumption and reliability is called

A.   Testing

B.   Patents

C.   Inspection

D.   Quality Assurance

25: In CAD, polar coordinates are adopted for drawing which of the following?

A.   Angled lines

B.   Arcs

C.   Circles

D.   Vertical lines

26: Which of the following ways can be used in product designing so that they can be less environmentally damaging and less costly to produce?

A.   Make products durable or recyclable

B.   Use recycled materials

C.   Substitute for harmful materials

D.   Reduce the amount of materials used

E.   e.a and d

F.   f.a, b, c and d

27: In the context of the metal stamping process, which of the following operations produces one or more plane surfaces that are at an angle to the original or flat plane of the blank?

A.   Blanking

B.   Stamping

C.   Forming

D.   Coining

28: A feeler gauge is a tool which is used to measure:

A.   gap widths between two parts or surfaces.

B.   the radius of an object.

C.   the roughness of a surface.

D.   the screw pitch.

29: Identify the advantages of sand castings over die castings from the points given below.

A.   Sand castings can vary greatly in wall thickness, whereas die castings have a uniform wall thickness.

B.   Sand castings have better surface finish than die castings.

C.   Sand castings are wider in gauge than die castings.

D.   A mold can be reused in case of sand castings, but not in case of die castings.

E.   Sand castings are stronger than die castings by virtue of the material used.

F.   Sand castings have higher production rates than die castings.

30: A heat source of ______________ is the most appropriate to melt the weld metal by supplying least amount of energy.

A.   high power density

B.   high temperature

C.   low temperature

D.   low power density

31: Which of the following are the most complex of all stamping dies?

A.   Progressive die

B.   Compound die

C.   Edge bending die

D.   V- bending die

32: A riser that is completely contained in the metal casting mold is called:

A.   open riser

B.   side riser

C.   blind riser

D.   top riser

33: Which tool is used in steel hot rolling of plate?

A.   Wire stock

B.   Slab

C.   Bar stock

D.   Bloom

34: The DFA(Design for Assembly) index is given as:

A.   Theoretical maximum assembly time÷Actual assembly time

B.   Theoretical maximum assembly time×Actual assembly time

C.   (Theoretical maximum assembly time×Actual assembly time)÷2

D.   Actual assembly time÷Theoretical maximum assembly time

35: The __________ process is known to achieve the highest material removal rate.

A.   discharge machining

B.   water jet cutting

C.   ultrasonic machining

D.   plasma arc cutting

36: Carburizing incorporates which one of the following?

A.   Diffusion

B.   Acid pickling

C.   Blast finishing

D.   Vapor degreasing

37: Which of the following is NOT an equipment used for abrasive blasting?

A.   Sample blast equipment

B.   Blast cabinet

C.   Portable blast equipment

D.   Blast room

38: Which of the following constitute the principal methods of applying powder coatings?

A.   Immersion

B.   Fluidized bed

C.   Electrostatic spraying

D.   Roller coating

E.   Brushing

39: The number of points essential to define the rectangle command in CAD is:

A.   4

B.   2

C.   8

D.   1

40: Which stress parameter is used to calculate the maximum force in a forging operations?

A.   Yield strength

B.   Average flow stress

C.   Compression strength

D.   Final flow stress

41: The _______________ process uses mechanical energy as its main energy source.

A.   conventional milling

B.   laser beam machining

C.   electrochemical grinding

D.   wire EDM

42: The minimum temperature used in the plasma arc cutting process is:

A.   11000°F

B.   17000°F

C.   6000°F

D.   20000°F

43: Objects joined together by way of adhesive bonding are called:

A.   adhibit

B.   adherent

C.   adherend

D.   adhesive


Which of the following correspond to the etch factor in chemical machining?

Here, S = specific removal rate, C = depth of cut, I = current, T = time, and U = undercut.









45: Which of the following describes the relationship between packing factor and porosity in the case of metallic powders?

A.   Packing factor = 1 - Porosity

B.   Packing factor - Porosity = 0

C.   Packing factor = 2/Porosity

D.   Packing factor + Porosity = 0

E.   None of these

46: Which of the following kinds of defects can occur during the injection molding process?

A.   Die swell

B.   Drag flow

C.   Flash

D.   Bambooing

47: Which of the following operations is/are carried out in sand casting once the casting is removed from the mold?

A.   Inspection

B.   Heat treatment

C.   Machining

D.   All of these

48: Which of the following is the most commonly employed casting process?

A.   Sand casting

B.   Centrifugal casting

C.   Investment casting

D.   Shell casting

E.   Die casting

49: Which of the following does NOT determine the quality of a product during manufacturing?

A.   Consistency of components of products

B.   All components should be new and free from defects

C.   Product should meet the requirements

D.   Weight of product should be less

50: Which of the following is a high-energy-rate forming process?

A.   Electrochemical machining

B.   Explosive forming

C.   Hydroforming

D.   Electron beam cutting