ITI Trade Fitter, Machinist, Turner Important Question with Answer

BLOCK : 2

ITI Trade Fitter, Machinist, Turner Important Question with Answer

ट्रेड थ्योरी आईटीआई क्वेश्चन पेपर

1.A finish cut is given to improve the surface finish of a rough milled work piece?

A.Decrease cutting speed, feed rate and depth of cut
B.Increase feed rate, depth of cut and reduce cutting speed
C.Increase feed rate, depth of cut and cutting speed
D.Increase cutting speed, reduce feed rate and depth of cut
Ans: D

2.The normal module of a helical gear with real module (m) of 6.62 and having an angle of 25 deg is?
A.6.62 x sin 25 deg
B.6.62 x cos 25 deg
A.6.62 x tan 25 deg
A.6.62 x cot 25 deg
Ans: B


3.Thread ring gauges are used check external threads. Separate 'Go' and 'No Go' gauging members are provided. Which one of the following screw thread elements is not checked with the ring gauges?
A.Pitch
B.Helix angle
C.Profile
D.Pitch diameter
Ans: B

4.Morse taper is one of the internationally accepted standard tapers. The Morse taper are available in numbers from?
A.0 to 7
B.0 to 8
C.1 to 7
D.1 to 8
Ans: A

5.A gear wheel has 36 teeth (z) and 3 mm module (m) its pitch diameter cutter?
A.12 mm
B.75 mm
C.80 mm
D.108 mm
Ans: D

6.A main purpose of using worm and worm wheel drives in machines and their accessories is to?
A.Transmit large torque
B.Provide large speed reduction from worm shaft to worm wheel
C.Transmit higher speeds
D.Provide large speed reduction from worm wheel to worm shaft
Ans: B

7.The tooth thickness of rack is measured by?
A.Universal vernier caliper
B.Gear tooth vernier caliper
C.Flange micrometer
D.Gear tester
Ans: B

8.There are two types of milling processes based on the direction of cutter rotation and work feed direction in up cut milling?
A.The work is fed in the same direction as the rotation of the cutter
B.Chip removal starts at the thickness part
C.Machine with backlash eliminator is essential
D.The work is fed against direction of the cutter rotation
Ans: D

9.A Shaft is turned in one finish cut which one of the following parameters will directly influence the machining time?
A.Cutting depth
B.Setting angle
C.Diameter of work piece
D.Tool travel distance
Ans: D

10.In a planning machine the depth of cut is given by?
A.Adjusting tool slide
B.Rotating the feed screw of the tool holder
C.Moving cross slide
D.Lifting the work piece
Ans: B

11.You have to machine a flat surface on a work piece of two metres length. Which machine will you choose for this?
A.Planning
B.Slotting
C.Milling
D.Shaping
Ans: A

12.Why it is necessary to maintain an approach distance between the cutting tool and the work while working on shaping machine?
A.To cool down the cutting edge of the tool bit
B.To avoid any ridge at the end of work piece
C.To allow the chips to fall and clear the cutting edge
D.To enable the clapper box to return to cutting
Ans: D

13.Oil grooves are to be cut in brass half bearings. Which one of the following chisels in suitable?
A.Flat chisel
B.Cross chisel
C.Half round nose chisel
D.Web chisel
Ans: C

14.The quality control allows at the most 0.4% defective parts, How many defective parts can be allowed in a production of 500 parts?
A.1
B.2
C.10
D.20
Ans: B

15.One which unit the tool setting is done on NC machine?
A.On special devices away from the machine
B.On the NC machine during idle time
C.On the pre setting devices
D.None of above
Ans: C

16.The component of the surface texture upon which the roughness is superimposed is known as?
A.Surface roughness
B.Surface texture
C.Lay
D.Waviness
Ans: D

17.Which one of the following groups of properties enables the manufacture of chain hooks from wrought iron?
A.Ductility, malleability and hardness
B.Hardness, toughness and ductility
C.Malleability, ductility and toughness
D.Hardness, toughness and brittleness
Ans: C

18.You have to file an aluminum block to a smooth finish, which one of the following cut of file is most suitable?
A.Double cut
B.Curved cut
C.Rasp cut
D.Single cut
Ans: A

19.Which one of the following is an artificial abrasive?
A.Emery
B.diamond
C.Corundum
D.Silicon carbide
Ans: D

20.The grain size of a grinding wheel is indicated by numbers, which range of grain size referred to as 'Very Fine'?
A.10 - 24
B.30 - 60
C.80 - 180
D.220 - 600
Ans: D

21.A high carbon steel has to be forged, which colour indicate the most suitable forging temperature?
A.Yellow red
B.Dark cherry red
C.white
D.Light yellow
Ans: A

22.The lead screw pitch of a milling machine is 5 mm and the dividing head ratio is 40 : 1 the lead of the milling machine is?
A.0.125 mm
B.5 mm
C.8 mm
D.200 mm
Ans: D

23.The axis of the plate cam blank and the end mill spindle should always remain?
A.Inclined to each other
B.Parallel to each other
C.Opposite to each other
D.Vertical and inclined
Ans: B

24.Which milling machine is particularly adopted for milling internal or external profiles?
A. Panto-graph milling machine
B.Universal milling machine
C.Planetary milling machine
D.Tracer controlled milling machine
Ans: D

25.A 42 teeth involute helical gear with a helix angle of 45 deg is to be cut on a milling machine?
A.12 to 13
B.35 to 54
C.135 to rake
D.17 to 20
Ans: B

26.CNC machine are not manually operated. They are controlled by means of?
A.A programme
B.An operating
C.A cam
D.A plug board system
Ans: A

27.Counter boring is done for?
A. Deburring hole ends
B.Enlarging holes to accurate size
C.Finishing cored holes
D.Accommodating socket head screws
Ans: D

28.A point to point control system is suitable only for one of the following applications?
A.Milling profile
B.Turning
C.Drilling
D.Grinding
Ans: C

29.A steel work piece of height tensile strength is to be machined with a HSS milling cutter, which one of the following rake angles is best suited for the cutter?
A.8"
B.12"
C.20"
D.28"
Ans: A

30.By using quick return mechanism in shaping machine the cutting stroke moves slow and return stroke fast. what is the ratio between cutting stroke and return stroke?
A.2:3
B.3:2
C.5:3
D.3:5
Ans: B

31.What will be the result if the clearance angle in drill is increased?
A.Poor wedging action
B.Weak cutting edge
C.Rough hole surface
D.Increased point angle
Ans: B

32.An irregularly shaped work piece is turned on a lathe. which one of the following work holding accessories is used?
A.Three jaw chuck
B.Two jaw chuck
C.Driving plate
D.Face plate
Ans: D

33.Solid H.S.S. cutters and carbide inserted tooth cutters are commonly used for milling, the permissible cutting speed of an inserted tooth cutter in relation to that of a HSS cutter is?
A.Twice as much
B.Five to ten times greater
C.smaller
D.Same
Ans: A

34.It is required to machine a single start worm of 2 module (m) and 60 mm pitch diameter, the speed ration is 40:1, to what length should the worm be cut?
A.21 mm
B.14.6 mm
C.29.3 mm
D.33.3 mm
Ans: C

35.The pattern on the work surface caused by the movement of the cutting tool is called?
A.Waviness
B.Roughness
C.Surface texture
D.Lay
Ans: C

36.A product is said to have the quality when?
A.Its shape and dimensions are within the limits
B.It appears to be very good
C.It is fit for use
D.The choice of material is right
Ans: C

37.Which taper is used on spindle nose of the lathe head stock?
A.Jerno taper
B.Brown and sharp taper
C.Pin taper
D.Morse taper
Ans: D

38.Why do you hold a work piece lengthwise while machining in a planning machine?
A.It is easier to load work piece lengthwise
B.The idle time will be minimum
C.The surface quality will be improved
D.The tool life will be increased
Ans: C

39.A hole whose lower deviation is zero is called basic hole, which one of the following letters indicates basic hole?
A. E
B. F
C. G
D. H
Ans: D

40.Rough and finish boring operations are carried out to machine a hole in a milling machine, for rough boring select?
A.High spindle speed and coarse feed
B.slow spindle speed and coarse feed
C.slow spindle speed and fine feed
D.High spindle speed and fine feed
Ans: B

41.While machining cast iron coolant should be?
A.Dry air
B. Kerosence
C.Machine oil
D.soft water
Ans: A

42.The tool post of a planning machine is mounted on?
A.Apron
B.Cross rail
C.Clapper box
D.Saddle
Ans: C

43.The tensile strength of a metal is its ability to resist fracture when subjected to tensile loads, the tensile strength of metals are expressed in?
A.N/mm sq.
B.Kg/mm sq.
C.N. Metre
D.Kg. Metre
Ans: B

44.Which one of the characteristics of a milling cutter is most suitable for climb milling?
A.Left hand cutting
B.Teeth material is carbide
C.Larger clearance and rake angle
D.The teeth are straight to the axis of the cutter
Ans:C

45.A gear wheel has 36 teeth and 3 mm module, its pitch diameter is?
A.12 mm
B.75 mm
C.80 mm
D.108 mm
Ans: D

46.Which one of the following thread forms is provided in the threaded parts where the pressure acts on one flank of the threads during transmission?
A.V thread
B.Square thread
C.Knuckle thread
D.Buttress thread
Ans: D

47.Which one of the bushes used in a drill jig and permits cutting tools of different diameters?
A.Press fit bushes
B.Removable bushes(slip)
C.Fixed removable bushes
D.Liner bushes
Ans: B

48.Which one of the following equipments is used in the shop floor for the checking of the form that is being turned?
A.Template
B.Snap gauge
C.Dial test indicator and slip gauges
D.Tool room microscope
Ans: B

49.While grinding and lapping cemented carbide tipped tool with diamond wheels a good flow of coolant should be directed to cover the grinding zone, the coolant suitable is?
A.Soluable oil
B.Mineral oil
C. Sulphurised oil
D.Mixture of paraffin and water
Ans: A

50.Which one of the following operations can be done on slotting machine?
A.External keyway on long shaft
B.Internal grooves
C.Woodruff keyway on a shaft
D.Keyway for feather keys
Ans: C

51.A screw thread is designated as 1" B.S.P. thread, in 1 inch B.S.P. thread what 1" indicates?
A.Major diameter of thread
B.Minor diameter of thread
C.Pitch diameter of thread
D.Hole diameter of pipe
Ans: D

52.What will be the result if the clearance angle in drill is increased?
A.Poor wedging action
B.Weak cutting edge
C.Rough hole surface
D.Increased point angle
Ans: B

53.The temperature to which a work piece is heated depends on the material and the type of forging process, the temperature range for forging low carbon steel is?
A.700 - 800 deg celsius
B.650 - 920 deg celsius
A.800 - 1300 deg celsius
A.450 - 700 deg celsius
Ans: C

54.It is commonly observed that the face of a grinding wheel becomes shiny and smooth or glazed after some use due to one of the reasons stated below?
A.Grade of wheel is too hard
B.Abrasive of the wheel not suitable for the purpose
C.Grain size is too coarse
D.Structure of the wheel is too open
Ans: A

55.A traveling steady is fixed on the saddle of a Lathe. What is the function of this steady rest?
A.To prevent bending of long shafts due to cutting forces
B.To avoid load on the lathe centres while turning long
C.To reduce the load on the cutting tool while turning
D.To enables to turn at higher cutting speeds than recommended
Ans: A

56.Zero setting of the two point bore dial gauge before the measurement is necessary to?
A.Account for the errors in the gauge
B.Facilitate comparison
C.Setup initial pressure in the gauge
D.Eliminate inaccuracy of the measurement
Ans: D

57.Indexing head mechanism works with?
A.Rock and gear
B.Worm and worm gear
C.Two helical gear
D.Two bevel gear
Ans: B

58.Which gear arrangement used to change the circular motion of horizontal to vertical without change in speed ratio?
A.Two spur gear
B.Two helical gear
C.Two bevel gear
D.Worm and worm gear
Ans: C

59.What is a built up edge is respect of a turning tool?
A.Job material embedded on tool edge
B.A carbide tip soldered on a tool shank
C.A method of reconditioning worn out cutting tool edge
D.A tool cutting edge with a crater on it
Ans:C

60.Slip gauges are used as standards for precision length measurements, the slip gauges are available in four grades as per BIS standard, which one of the following grades is meant only for reference?
A. 0 grade
B. 1 grade
C. 00 grade
D. 11 grade
Ans: C

61.How do you recognize a drill for soft metal?
A.By the large helix angle
B.By the small helix angle
C.By the chisel edge angle
D.By the point angle which is 90 deg
Ans: A

62.Dressing and turning of a grinding wheel are?
A.Exactly the same operation
B.Done with the same equipment
C.Done only for coarse grinding wheels
D.Only for form grinding
Ans: B

63.The web of twist drill, due to repeated grinding causes resistance to feeding while drilling a 12 mm diameter hole, the above effect is reduced by providing?
A.Negative rake of web
B.Thinning of web
C.Less feeding force
D.More feeding force
Ans: C

64.It is required to finish grind a dia 50mm hardened steel shaft on a cylindrical grinding machine, if the recommended surface speed of the work is 33 metres/minute, the rpm of the work is?
A. 190
B. 150
C. 210
D. 250
Ans: C

65.A 1.5 mm displacement of tool point in boring operation will result in a change in the diameter equal to?
A.0.75 mm
B.1.5 mm
C.3 mm
D.6 mm
Ans: C

66.The position of gear cutter on the arbor for rack milling is?
A.Nearer to the column
B.Nearer to the arbor support
C.At the middle
D.At any point on the arbor
Ans: B

67.Various alloying elements are added to produce different alloy steels, which one of the following combination of alloying elements is using for HSS?
A.Chromium, nickel and molybdenum
B.Nickel, molybdenum and silicon
C.Chromium, vanadium and maganese
D.Chromium, vanadium and tungsten
Ans: D

68.Which is the correct expression for the unit of feed rate in milling?
A. m/min
B. mm/rev
C. mm/sec
D. mm/min
Ans: A

69.In a shaping machine with mechanical driven ram the ram speed is not uniform?
A.At the beginning of the cutting stroke
B.In the middle of the cutting stroke
C.At the end of the return stroke
D.In the middle of the return stroke
Ans: D

70.Thread measurement with inserts fitted in the anvil and spindle of screw tread micrometer are selected on the basis of one the following elements of a thread being measured?
A.Major diameter
B.Minor diameter
C.Effective diameter
D.Pitch
Ans: C 

71.What will be the result if the clearance angle in the drill is increased? 

A.Poor wedging action             B.Weak cutting edge 

C.Rough hole surface              D.Increased point angle Ans: B

72.An irregularly shaped workpiece is turned on a lathe. which one of the following work-holding accessories is used? 

A.Three jaw chuck              B.Two jaw chuck 

C.Driving plate                   D.Faceplate Ans: D

73.Solid H.S.S. cutters and carbide inserted tooth cutters are commonly used for milling, the permissible cutting speed of an inserted tooth cutter in relation to that of an HSS cutter is? A.Twice as much           B.Five to ten times greater 

C.smaller                     D.Same Ans: A

74.It is required to machine a single start worm of 2 module (m) and 60 mm pitch diameter, the speed ratio is 40:1, to what length should the worm be cut? 

A.21 mm              B.14.6 mm 

C.29.3 mm           D.33.3 mm Ans: C

75.The pattern on the work surface caused by the movement of the cutting tool is called? A.Waviness                 B.Roughness  

C.Surface texture        D.Lay Ans: C

76.A product is said to have the quality when? 

A.Its shape and dimensions are within the limits       B.It appears to be very good 

C.It is fit for use          D.The choice of material is right Ans: C

77.Which taper is used on spindle nose of the lathe headstock? 

A.Jarno taper          B.Brown and sharp taper 

C.Pin taper             D.Morse taper Ans: D

78.Why do you hold a workpiece lengthwise while machining in a planning machine? 

A.It is easier to load workpiece lengthwise     B.The idle time will be minimized 

C.The surface quality will be improved           D.The tool life will be increased Ans: C

79.A hole whose lower deviation is zero is called the basic hole, which one of the following letters indicates basic hole? 

A. E,             B. F,    

C. G,            D. H, Ans: D

80.Rough and finish boring operations are carried out to machine a hole in a milling machine, for rough boring select?  

A.High spindle speed and coarse feed     B.slow spindle speed and coarse feed  

C.slow spindle speed and fine feed         D.High spindle speed and fine feed Ans: B

81.While machining cast iron coolant should be? 

A.Dry air             B.Kerosene 

C.Machine oil       D.soft water Ans: A

82.The tool post of a planning machine is mounted on? 

A.Apron               B.Cross rail 

C.Clapper box      D.Saddle Ans: C

83.The tensile strength of a metal is its ability to resist fracture when subjected to tensile loads, the tensile strength of metals are expressed in? 

A.N/mm sq.      B.Kg/mm sq. 

C.N. Metre        D.Kg. Metre Ans: B

84.Which one of the characteristics of a milling cutter is most suitable for climb milling? 

A.Left-hand cutting B.Teeth material is carbide 

C.Larger clearance and rake angle D.The teeth are straight to the axis of the cutter Ans:C

85.A gear wheel has 36 teeth and 3 mm module, its pitch diameter is? 

A.12 mm           B.75 mm 

C.80 mm           D.108 mm Ans: D

86. The angle on which the strength of tool depend is ....
A. Rake angle B. Clearance angleC. Cutting angle D. Lip angle

87.The negative rake is usually provide on .........
A. High carbon steel tool B. High speed steel tool
C. Cemented carbide tool D. All of these

88.Negative rake are used for .......
A. Carbide tools B. Heavy tools
C. Harder material D. All of these

89.The angle made by the face of the tool and plane parallel to the base of cutting tool is   called .........
A. Rake angle B. Clearance angle
C. Cutting angle D. Lip angle

90.The cutting fluid mostly used for machining alloy steel is .......
A. Water B. Soluble oil
C. Dry D. Sulphured mineral oil

91.The factor which affects the tool life is .......
A.Tool geometry B. Cutting speed 
C. Feed rate D. All of these

92. The tool life is said to be over if-
A. Surface finish is poor      B. There is sudden increase in cutting force and power consumption
C. Overheating and fuming due to heat of friction starts        D. All of the above

93.A grinding wheel is said to be of if the abrasive grain can be easily dislodged.
A. Soft grade   B. Hard g:rade
C. Medium grade   D. All of these

94.A Coarse grained grinding wheel is used to grind-
A. Hard and brittle materials B. Soft and ductile materials
C. Hard and ductile materials D. Soft and brittle materials

95.For fast removal of materials during grinding a grinding wheel is used .......
A. Coarse grained B. Fine grained
C. Medium grained D. All bf these 

96.The purpose of Jig and fixture is to ........
A. Increase production rate B. Enable employ less skilled operators
C. Increase machining accuracy      D. All of these

97.A good lubricant for thread cutting operation is- 
A. Mineral lard oil B. Water soluble oil
C. Graphite D. White lead

98.Tool life is most affected by machine .......
A. Cutting speed B. Tool geometry 
C. Feed and depth D. Microstructure of material being cut

99.It is possible to correlate tool life with the following property of the metal ........
A. Grain size B. ToughnessC. Hardness D. Microconsitiuent

100.Tungsten content in the High speed steel tool cutting tool material is ..........
18-4-1 high speed steel contains following element in the ratio of 18-4-1.
A. Tungsten, Chromium, and vanadium  B. Chromium, vanadium, and Tungsten
C. Vanadium, Tungsten, and Chromium  D. None of these

101.The characteristics that enable one material to cut another is its relative-
A. Toughness B. Hardness
C. Resilience D. Ductility

102.High speed steel tool material contains carbon-
A. 0.6-1.0%                                 B. 1.0-6.0%

C. 6-10%                                     D. 0.6%

103.The angle between the face of tool, and line tangent to the machined surface at the cutting point is known as .........
A. Rake angle B. Cutting angle
C. Clearance angle                   D. Lip angle

104.Chip breakers are provided on cutting tools .........A. For safety of operators B. To minimize heat generation
C. To permit short segment chips     D. To increase tool life

105.Tool life is said to be over when .......
A. Finish of work becomes too rough      B. Cutter looks dull
C. Chips become blue D. A certain amount of wear or cratering occurs on the flank

106.The grit, grade and structure of grinding wheels for specific operation are based on-
A. Grinder clearance B. Spindle size of the grinder
C. Diameter of wheels D. Speed at which the wheel is to be used

107.When it is required to run a grinding wheel safely at very high speed. Following bond should be used .......
A. Vitrified B. Resinoid and Rubber
C. Shellac D. Silicate

108.Which of the following is not the angle measuring device?
A. Angle plate B. Sine bar
C. Angle gauge D. Screw thread micrometer

109.Accurate centering of work mounted in an independent chuck can be determined by using
A. Centre gauge                    B. Height gauge
C. Dial indicator D. Micrometer

110.A sine bar is used to measure .......
A. Surface roughness            B. Gear profiles
C. Internal tapers                    D. External tapers

111.The purpose of using borax in brazing is ...........
A.Dissolve oxides when heating the work  B. Prevent the spelter from melting too quickly
C.Increase fluidity of braze material   D. Accelerate the formation of oxides on the work

112.When brazing is carried out-
A. A joint is made between two parts by molten spelter 

B. The edges of the joint melt and run together 
C. Spelter forms an alloy with flux

D. Flux acts as a connecting material

113.In soldering the melting point of filter metal is .......
A. Below B. Above 4200C
C. Below 5200C          D. Above 5200C

114.The composion of soft solder is ..........
A. Lead-37%, tin B. Lead-67%, tin
C. Lead-70%, tin D. Lead-50%, tin

115.Best coolant and lubrication for bras, copper and bronze is-
A. Soluble oil B. Water, soluble oil or sulphur based mineral oils
C. Mineral and fatty oils      D. Dry

116.Which of the following operations can be used on Centre lathe?
A. Grinding B. Milling
C. Drilling D. All of these

117.In lathe, form tools are used to produce.
A. Cylindrical surfaces                                                                 B. Tapered surfaces
C. The surfaces which are neither cylindrical nor tapered       D. Threads

118.The following are the function of a jig ........
A. Holding B. Locating
C. Guiding D. All of these

119.A fixture does not .......
A. Holds the workpiece                    B. Locate the workpiece
C. Guide the tool   D. All of these

120.Jigs are not used in ........
A. Drilling B. Reaming
C. Tapping D. Milling

121.The following jig can be used for several different work pieces and operations.
A. eremplate jig B. Multi-station jig
C.Index jig D. Universal jig

122.A fixture is defined as a device which ........
A. Hold and locate a workpiece and guide and controls one or more cutting tools 
B. Hold and locate a workpiece during an inspection or for manufacturing a operation
C. Is used to check the accuracy of workpiece
D. All of the above

123.Multi thread are used to secure ......
A. Low efficiency B. High efficiency
C. High load lifting capacity D. High mechanical advantage

124.External taper can be accurately measured with the help of .......
A. Sine bar and slip gauges B. Dividing head
C. Precision balls and height guage D. Combination set

125.The axial advancement in one rotation of screw pan is known as of the threads.
A. Pitch                                               B. Lead
C. Pitch diameter D. Helix angle

126.The distance from a point on one thread to the corresponding point on the next thread is called.A. Lead B. Pitch

C. Turn D. Crest

127.The angle included by the flanks of the thread ........
A. Angle of thread B. Depth of thread
C. Depth of cut D. Slope of thread

128.Best coolant and lubrication for aluminium.
A. Soluble oil                                    B. Water, soluble oil or sulphur based mineral oils
C. Mineral and fatty oils or soluable oils              D. Dry

129.The diameter of a finish turned shaft can best be checked with a ........
A. Combination set                            B. Dial indicator
C. Height gauge                                 D. Micrometer screw gauge

130.The thread micrometer measures........
A. The major diameter of thread                      B. The minor diameter of thread

C. The effective diameter of thread   D. The rod diameter of thread

131.A screw thread is designated as 1" B.S.P. thread, in I inch B.S P. thread what l"   indicates?
A. Major diameter of thread                     B. Minor diameter of thread 
C. Pitch diameter of thread D. Hole diameter of Pipe

132.In a sine bar the standard length is measured from.......
A. Edge to edge B. Between inner circumference of two buttons
C. Between out circumference of two buttons    D. Between the centers of two buttons

133.Work is usually required to be held in a vertical position for layout. For this purpose, lit is
clamped to-
A. Surface plate                                        B. A machine bed
C. An angle plate   D. A V block

134. पाने का पानी घरो तक पहुँचाने के लिए प्रयोग किया जाता है The water obtained is used to transport the house
A. Galvanized Iron Pipe                                         B. Lad Pipe
C. Kaper pipe                                                         D. cast iron pipes   Asn. A

135. टूटी को पूरा बन्द करने के बाद भी पानी फिर भी  निकलता हैं Even after the complete shut down of the broken water, water still goes out
A. Washers Damaged                       B. Spindle Turning
C. Not being straightforward             D. None of these  Asn. A.

136. 'ए' ग्रेड वी ब्लाकों का प्रयोग निम्न में से किस कार्य के लिए किया जाता 'A' grade V blocks are used for which of the following.

A. वर्कशाप में साधारण कार्यों के लिए For simple tasks in the workshop  B. इंसपेक्शन विभाग में In the Inspection Department

C. टूल रूम विभाग में in Tool Room Department        D. कैलिब्रेशन कार्यों के लिए For calibration tasks     Asn. C

137. A ग्रेड को 'वी' ब्लाक निम्न में से किस धातु के बने होते हैं। A grade 'V' block is made of which of the following metals.

A. Low carbon steel                                              B. Medium Carbon Steel

C. High carbon steel                                             D. cast iron            Asn. C

138. B ग्रेड को 'वी' ब्लाक निम्न में से किस साइज में होते हैं। The 'V' block in B grade is in the following size.

A. 100 mm Less than                                            B. 100 mm

C. 100 mm more than                                           D. 300 mm            Asn. D

139. 'वी' ब्लाक का स्पेसिपिकेशन इस प्रकार दिया जाता है जैसे 'वी' ब्लाक 5015-40S-IS1949 इसमें (5-40) का क्या अर्थ है। The spatialization of 'V' block is given in this way as 'V' block 5015-40S-IS1949 means (5-40) in it.

A. 5 मि.मी. से 40 मि.मी. व्यास पकड़ा जायगा 5 mm 40 mm from Diameter will be caught

B. 20 से 40 मि.मी. का व्यास पकड़ा जायगा 20 to 40 mm Diameter of

C. 5 से 40 इसका नम्बर है It is number 5 to 40.

D. 5-40 ग्रेड है is 5-40 grade.                                         Asn. A

140. 'वी 'ब्लाक के साथ जॉब को क्लैम्प करने के लिए किस साधन का प्रयोग किया जाता है। What tool is used to clamp jobs with 'V' block.

A. 'V' Block                                                            B. 'C' Clamp

C. 'U' Clamp                                                          D. Nut and Bolt      Asn. C

               

141. 'वी' ब्लाक कलैम्प निम्न में से किस धातु के बने होते हैं। 'V' block clamp is made of which of the following metals.

A. Cast Steel                                                        B. High carbon steel

C. High speed steel                                              D. Copper                     Asn. A

142. गोलाकार जॉब पर Drilling करने के लिए प्रयोग किया जाता है Is used to drill on Sylidrical jab.  

A. 'V' Block                                                           B. 'C' Clamp

C. 'U' Clamp                                                         D. Nut and Bolt             Asn. A

143. वनिर्यर कैलीपर का अल्पमान हैं vernier caliper is a least count.

A. 0.1 4                                                                 B. 0.2

C. 0.02                                                                  D. 0.001                    Asn. C 

144.Which type of jig will not have base plate? 

A. Table jig                                B. Plate jig   

C. Template jig                          D. Sandwich jig    Ans. B                                                                                                               

 145. What is the name of jig?

           

 A.Leaf jig      B. Solid jig    C. Table jig      D. Angle plate jig     Ans :  D

146. What is the name of jig?

A. Box jig             B. Post jig        C. Turn over jig         D. Sandwich jig  Ans. C

147. Which type of bushes is used in jig to perform more than one operation in same location? 

A. Slip bush                   B. Plain bush 

C. Fixed bush                D. Linear bush   Ans. A

148. What is the purpose of grooves provided in the ‘V’ blocks? 

A. Reduce the weight                B. Support the work piece 

C. Accommodate the clamp      D. Allow thermal expansion  Ans. C 

149. Why the balancing weight is provided in the turning fixture? 

A. To guide tool                         B. To balance the tool 

C. To balance worktable           D. To balance irregular workpiece   Ans. D

150. Which is the important factor to determine the construction of fixture? 

A. Machining method                B. Location and clamping 

C. Tool guiding and frame         D. Size of work piece and tool  Ans. A