Hello friends in this post we are going to discuss about Jigs & Fixtures Multiple choice questions | Jigs & Fixtures MCQs with answer | Jigs & Fixtures Question Answers Dumps | Jigs & Fixtures Objective type question Answer
1.Jigs and Fixtures are used for
a) Mass production b) Identical parts production c) Both ‘A’ and ‘B’ d) None of the above
Ans: C
2. The use of jigs and fixtures
a) Facilitates deployment of less skilled labour for production b) Eliminates pre-machining operations like marking, measuring, laying out etc. c) reduced manual handling operations d) All of the above
Ans: D
3. The following is(are) the function(s) of a jig
a) Holding b) Locating c) Guiding d) All of the above
Ans: D
4. A fixture does not
a) Holds the workpiece b) Locate the workpiece c) Guide the tool d) All of the above
Ans: C
5. Jigs are not used in
a) Drilling b) Reaming c) Tapping d) Milling
Ans: D
6. Fixtures are used in
a) Milling b) Shaping c) Turning d) All of the above
Ans: D
7. Principle of ______ states that “In order to achieve the maximum accuracy in location the locating points should, therefore, be placed as far apart from one another as it is possible”.
a) Six point location b) Least points c) Extreme positions d) Mutually perpendicular planes
Ans: C
8. The following holds the workpiece securely in a jig or fixture against the cutting forces
a) Locating device b) Clamping device c) Guiding device d) Indexing device
Ans: B
9. The following is a quick acting clamp
a) Hinged clamp b) Cam operated clamp c) Bridge clamp d) Edge clamp
Ans: B
10. The following material is commonly used for making locating and clamping devices
a) High carbon steel b) Low carbon steel c) High speed steel d) Die steel
Ans: A
11. The following type of jig is used for machining in more than one plane
a) Template jig b) Plate type jig c) Open type jig d) Box type jig
Ans: D
12. The following type of jig suits best for drilling of holes in hollow cylindrical components, with relatively smaller outside and inside diameters, such as bushes
a) Solid type jig b) Pot type jig c) Box type jig d) Open type jig
Ans: B
13. The following type of jig is used to drill a series of equidistant hole along a circle
a) Index jig b) Plate type jig c) Open type jig d) Pot type jig
Ans: A
14. This type of jig is employed on multi-spindle machines
a) Index jig b) Universal jig c) Open type jig d) Multi-station jig
Ans: D
15. The following jig can be used for several different work pieces and operations
a) Template jig b) Multi-station jig c) Index jig d) Universal jig
Ans: D
16. The following is(are) the advantage(s) of cast jigs or fixtures
a) No heat treatments are required for the cast jigs and fixtures b) It prevents the occurrence of tool chatter in milling c) if cast jigs or fixture drops down, they don’t get misaligned or de-shaped, although it may break d) All of the above
Ans: D
17. The jigs and fixtures can be constructed through
a) Casting b) Fabrication c) Welding d) All of the above
Ans: D
18. V-blocks (Vee locators) are used for clamping as well as locating when faces are inclined upto
a) 30 b) 12 c) 9 d) 3
Ans: D
19. Which type of Support pin or rest button is shown in below diagram?
a) Fixed type support pin b) Adjustable type support pin c) Support pad d) Wedge type support pin
Ans: A
20. Jigs and fixtures are
a) machining tools b) precision tools c) both a. and b. d) none of the above
Ans: B
21. A device, in which a component is held and located for a specific operation and bushes are integrated that guide the tool, is called as
a) Jig b) Fixture c) both a. and b. d) none of the above
Ans: A
22. Fixtures are used in connection with
a) drilling operation b) reaming operation c) tapping operation d) milling operation
Ans: D
23. How jigs are in terms of weight compared to fixtures?
a) Jigs are lighter than fixtures b) Jigs are heavier than fixtures c) Jigs are equal in weight to fixtures for same operation d) cannot say
Ans: A
24. Which of the following sentences are true for jigs and fixtures? 1. Using jigs and fixture produce work rapidly 2. High speed, feed and depth of cut can be used in machining with the help of jigs and fixtures 3. Jigs and fixture cannot be used in machining of complex and heavy components
a) (1) and (2) b) (2) and (3) c) (1) and (3) d) All of the (1), (2) and (3)
Ans: A
25. The device which place the workpiece in the same position, in jig and fixture, cycle after cycle is called as
a) placing device b) fixing device c) locating device d) positioning device
Ans: C
26. Which fixtures are used for machining parts which must have machined details evenly spaced?
a) Profile fixtures b) Duplex fixtures c) Indexing fixtures d) None of the above
Ans: C
27. The device which is used to remove workpiece from close-fitting locators, after the workpiece has been removed is called as
a) Remover b) Ejector c) escaper d) blocker
Ans: B
28. With the use of Jigs and fixture total cost of production
a) Increases b) Decreases c) Remains same d) Jigs are not used in any production process
Ans: B
29. With the use of Jigs and fixture rate of production will
a) Increase b) Decrease c) Remains same d) Jigs are not used in any production process
Ans: A
30. Jigs and fixture increases the accuracy of the parts.
a) True b) False
Ans: A
31. Jigs And fixture are used to provide interchangeability.
a) True b) False
Ans: A
32. With the use of Jigs and fixture quality control expenses will
a) Reduce b) Increases c) Jigs and fixture are not used in any production process d) None of the mentioned
Ans: A
33. With the use of Jigs and fixture
a) Labour cost decreases b) Labour cost increases c) Labour cost decreases d) None of the mentioned
Ans: A
34. Which of the following is not correct about fixture?
a) It is used to hold the work b) It is used to position the work the work c) It assures high accuracy of parts d) It is used to guide the cutting tool
Ans: D
35. Which of the following is not correct about jig?
a) It is used to hold the work b) It is used to position the work the work c) It is used to guide the cutting tool d) None of the mentioned
Ans: D
36. In which of the following operation jigs are preferred over fixture?
a) Drilling b) Turning c) Milling d) Grinding
Ans: A
37. Number of degree of freedom of a workpiece in space is equal to
a) 10 b) 12 c) 14 d) 16
Ans: B
38. The purpose of jigs and fixtures is to
a) increase machining accuracy b) facilitate interchangeability c) decrease expenditure on quality control d) all of these
Ans: D
39. A diamond locating pin is used in jigs and fixtures because
a) diamond is very hard and wear resistant b) it occupies very little space c) it helps in assembly with tolerance on centre distance d) it has a long life
Ans: C
40. A jig is used to
a) drill a hole b) locate and clamp a work piece c) locate, clamp the work piece and guide the cutting tool d) set the work piece for measurement
Ans: C
41. Common feature between jig and fixture is that both are used for
a) cutting the work piece b) holding the work piece c) locating the work piece d) testing and inspection of the work piece
Ans: A
42. Slip bush is used in jig where
a) the drill bit can slip on the work piece b) holes are too close c) the bush is to be replaced every time d) a liner is used along with bush
Ans: C
43. Liner in a bush of a jig
a) saves the bush from wear b) strengthens the bush c) offers lubrication d) aligns the bush in a hole
Ans: A
44. A cam is used in a jig to
a) locate the work piece b) lift a heavy work piece c) move the work piece frequently d) to clamp the work piece
Ans: D
45. A turning fixture is used on the lathe
a) to turn a non‐symmetric job b) so that the surface finish of the work piece is not spoiled c) to turn the work piece which otherwise cannot be fitted on the lathe d) to turn long jobs
Ans: C
46. An indexing jig is used to
a) plane surfaces b) one angular settings c) multi angular settings d) multi plane settings
Ans: C
47. A fixture is used to
a) save time b) fix odd shaped jobs c) easy machining d) none of above
Ans: B
48. The quickest clamping device is a
a) wing nut b) knurled nut c) cam/eccentric d) Conventional nut
Show Answer
Ans: C
49. A conical locater has the advantage of
a) easy location b) self-centering c) easy location and self‐centering d) offers good grid
Ans: C
50. A jig is used for __________. _____________ and ___________.
a) Locate, fix, and guide the tool b) Locate and hold
Ans: A
51. Fixtures __________ to fix a job.
a) Helps b) guide
Ans: A
52. Swinging bar is a ______________ device.
a) Clamping b) Guiding
Ans: A
53. ____________ are used where a heavy clamping force is required.
a) Hydraulic pistons b) Pneumatic pistons
Ans: A
54. An eccentric can be used as a clamping device for ____________ clamping.
a) Quick b) Slow
Ans: A
55. Bushings are used as ____________ in jigs.
a) tool guide b) punch guide
Ans: A
56. ____________ is used if it is to be replaced for different operations.
a) Slip bushings b) Fix bushing
Ans: A
57. Two important jig bodies are: ____________ and ____________.
a) Open, closed b) Trunion
Ans: A
58. ____________ jig is used to locate angular positions.
a) Indexing b) Template
Ans: A
59. Fixture holds and locates the job but does not ____________.
a) guide the tool b) Fix the tool
Ans: A
60. Milling fixture can be used to hold ____________ simultaneously.
a) Many b) Less
Ans: A
61. Welding fixture helps to ____________ the parts to be welded.
a) Locate b) Assemble
Ans: A
62. Templates jigs are normally used for_________
a) Accuracy b) Speed c) Cutting Speed d) None of these
Ans: A
63. Plate jigs are _________ to templates jigs.
a) Different b) Similar c) Partial different d) None of these
Ans: B
64. Templates jigs are _______ expensive and simplest type of jig.
a) Least b) More c) Moderate d) None of these
Ans: A
65. When bushing are not less in jig plate, the whole jig plate is normally _______
a) Hardened b) Softened c) Polished d) None of these
Ans: A
66. Sandwich jig is ideal for ________ parts which could bend.
a) Thin b) Thick c) Hard d) None of these
Ans: A
67. Boring jigs are used to bore holes which are _________
a) Large b) Small c) Ream d) None of these
Ans: A
68. Closed jigs are used for machining parts on more than _______ sides.
a) One b) Two c) Three d) None of these
Ans: A
69. Angle plate jigs are used to hold parts which are machined at _____ angle to their monitoring locators.
a) Right b) Wrong c) Parallel d) None of these
Ans: A
70. Box jig allows the part to be completely machined on every surface without __________ to work.
a) Repositioning b) Reaming c) Re-Hardening d) None of these
Ans: A
71. In channel jig, work is held between two sides and machining is done from ______ side.
a) Third b) First c) Second d) None of these
Ans: A
72. Multi station jigs are used on __________ machines
a) Multi spindle b) Single spindle c) Without spindle d) None of these
Ans: A
73. Large indexing jigs are called _______ jigs.
a) Rotary b) Horizontal c) Vertical d) None of these
Ans: A
74. In fixtures, set blocks are used to ________ the cutting tool.
a) Set b) Re sharp c) Re open d) None of these
Ans: A
75. In multi station jig, final station is used for unloading and reloading of ________ part.
a) Rejected b) New c) Old d) None of these
Ans: B
76. In table jig, the _________ are used to raise the jig off the table for large work.
a) Feet b) Legs c) Stands d) None of these
Show Answer
Ans: B
77. Pull dowels are used in blind holes.
a) True b) False
Ans: A
78. Grooved and spring dowels should be specified where extreme precision is not necessary.
a) True b) False
Ans: A
79. Jig pins are more accurate the dowel.
a) True b) False
Ans: B
80. Feeler gauge is used with setting block for setting the cutter.
a) True b) False
Ans: A
81. How many burrs are produces in drilling?
a) One b) Two c) Three d) None of these
Show Answer
Ans: B
82. Primary burr produced where drill enters the work.
a) True b) False
Ans: B
83. Primary burr is made on the side opposite the drill bushing.
a) True b) False
Ans: A
84. Extended range bushing are used to support and guide the tool
a) True b) False
Ans: A
85. Wedges have slight angle between ________.
a) 1° to 4° b) 5° to 10° c) 10° to 15° d) None of these
Ans: A
86. Cam clamps are not used where there is a strong vibration present
a) True b) False
Ans: A
87. Cam clamps are used for ________ holding the work
a) Slow b) Fast c) Very slow d) None of these
Show Answer
Ans: B
88. Power clamps used hydraulic pneumatic system
a) True b) False
Ans: A
89. Stamp claps can operate by either manual or power drive clamps.
a) True b) False
Ans: A
90. Clamping force is the force required to hold a part against locators.
a) True b) False
Ans: A
91. Ejectors are not used to remove work from close filling locators
a) True b) False
Ans: B
92. Jig should be fool proof
a) Yes b) No
Ans: A
93. The common type of fixed locator is dowel
a) True b) False
Ans: A
94. The U-block locators are not used for holding round job.
a) True b) False
Ans: B
95. Alignment pins have longer area of contact then locating pins.
a) True b) False
Ans: A
96. How long should a bushing be w.r.t. tool diameter?
a) 1 to 2 times b) 3 to 4 times c) 5 to 6 times d) None of these
Ans: A
97. Generally tolerance of a jig or fixture should be between
a) 20% to 50% b) 40% to 60% c) 5% to 10% d) None of these
Ans: A
98. Fixture key is used to precisely locate the base of the tool in the table T-slot
a) True b) False
Ans: A
99. In case of extreme accuracy distance between bottoms of jig bush to work part should be between ______ times of tool distance.
a) ¼ to ½ dia b) ½ to 1/3 dia c) 1/5 to 1/8 dia d) None of these
Ans: A
100. 20 ±0.005 is a unilateral tolerance system
a) True b) False
Show Answer
Ans: B