workshop

Indian Aerospace & Engineering, Navi Mumbai

WORKSHOP

1. Angle of thread in British Association thread is a. 45°b. 55°c. 47.5°d. 60°

2. Thread angle is 60° and crest and root are cut parallel to axis the type of thread is a. Unified thread b. Metric thread c. Sellers thread d. Whirworth thread

3. Which thread is used for obtaining larger axial movement for nut or screw per revolution a. Acme thread b. Square thread c. British std. fine threadd. Brown and sharp worm thread

4. Threads are used in coupler or railways carriages a. Acme thread b. Knucle thread c. Sellers thread d. Buttress thread

5. Lead is equal to pitch a. Single start threadb. Double start thread c. Triple start thread d. Right hand thread

6. The top surface joining the two sides of thread is called a. Addendum b. Crest c. Root d. Flank

7. Slope surface connecting crest & the root in thread a. Side surface b. Flank c. Lead d. Pitch

8. Depth of thread is equal to a. The outside diameter minus pitch diameterb. The difference between the outside diameter and core diameter c. The nominal diameter minus core diameter d. The half the difference between outside diameter & core diameter

9. Identify the thread a. Unified external thread b. Whitworth external thread c. Whitworth internal thread d. Sellers internal thread

10. Length of file is measured from a. Tang to tip b. Heel to tip c. The portion of file on which teeth has been used d. None

11. MTCS i. Size of cut depends on coarseness of file ii. Only taper tap can used when hole is open at both end

a. Only i is correct b. Only ii is correct c. Both are correct d. None are correct

12. MTCSi. Single cut file remove stock as fast as double cut ii. In single cut file teeth cuts at an angle 65° to 85° with length of file

a. Only i is correct b. Only ii is correct c. Both are correct d. None

13. Identify the neck of hammer a. A b. Bc. Cd. D

14. While riveting hole center can be marked by a. Center punch b. Template c. Hole finder

15. Every third tooth of hacksaw is made straight a. For sawing clearance b. Raker and for cleaning c. Ripsaw d. None

16. Die is made use for a. Cutting internal thread b. Cutting external thread c. As in b and made of steel, hardened & tempered d. As in a and made of steel

17. Which of the following precision instrument is used for tightening the nut on bolt with proper torque is a. Socket wrench b. Torque wrench c. Ratchet wrench

18. Aviation snips are designed for a. Enlarging small holes b. Cutting heat treatment Al alloys and stainless steel c. Cutting high carbon steel d. Both a and b

19. Identify the part of file a. Heel b. Face c. Edge d. Tang

20. Finished thread on both is checked by a. Screw pitch gauge b. Ring thread gauge c. Filler gauge d. All

21. In case of torque wrench is a. The basic formula for use with extension is Tw = Tex A/Bb. The basic formula for use with extension is Te = Twx A/Bc. The basic formula for use with extension is Tw = Tex B/Ad. The basic formula for use with extension is Te = Twx B/A

22. What tool is generally used to set a divider to an exact dimension a. Mechanic scale b. Surface gauge c. Dial indicator d. All

23. In a micrometer in the main scale each cm divided into 10 equal parts & in circular scale 9 division of main scale to 10 division of circulars scale the least count of micrometer is a. 1 mm b. 0.01 m c. 0.01 cm d. 0.001 mm

24. What tool is generally used to calibrate a micrometer or check its accuracy a. Gauge block b. Dial indicator c. Machinist scale

25. For producing countersinking hole which is drill is used a. Flat drill b. Straight flute drill c. Step drilld. Twist drill

26. The entire cone shaped surface at cutting end of drill is a. Margin b. Point c. Land d. Web

27. The diameter of the margin at the shank end of the drill is _________ than the diameter at the point a. 0.005 to 0.003 in greater b. 0.002 to 0.001 in smaller c. 0.0005 to 0.002 in smaller d. 0.005 to 0.002 in smaller

28. The diameter difference of margin at the shank end of drill and the diameter at point for a. Drilling deep hole b. Reduce friction between the drill and wall c. Revolve without binding when drilling deep holes d. Drill a hole to be accurate size

29. Telescoping gauge a. Is used on inside measurement b. Range from 1/2” to 6”c. Range from 1/2” to 1”d. Range from 1/2” to 1e. Both a and b

30. Hole gauge is used a. Measuring grooves and slots b. Measuring small holec. Both a and b d. None

31. Which statement is correct a. Straight fluted reamer is less tendency the chatter b. Spiral type are tapered for the short distance back of end to aid in starting c. Bottoming reamer have tapers end and are used to shot hole d. Both a and b

32. Threads per inch are measured by a. Screw pitch gauge b. SWGc. Thickness gauge d. Plug gauge

33. Threads in deep holes are cut by a. Split die b. Extension tapc. No. 2 serial tap d. Bottoming tap

34. Screw pitch gauge is used for a. Measuring external thread per inch b. Measuring internal thread per inch c. Measuring nominal diameter of screw d. Both a and b

35. The size of flat cold chisel is determine by a. Width of cutting edge b. Length of the cutting edge c. Length of chisel d. All

36. A combination set is used as a. Depth gauge, try – square, scriber b. Protractor, scriber, trysquare c. Centerhead, protractor, scriber d. None

37. The term associated with worm gear is a. Throtb. Face angle c. Normal pitch d. All

38. MTCS a. The diametrical pitch and pitch in spur gear are some b. If the diametrical pitch is given you can find out addendum c. If we divided DP by PD we can get size of teeth d. If the diametrical pitch is given you cannot find addendum

39. Adjustable – hook spanner wrench used on a. Rounded nut having series and notches or slot cut on their periphery b. Hexagonal nut having series of notches or slot cut on their periphery c. Square nut having series of notches or slot cut on their periphery d. All

40. Tool steel means a. Low carbon steel with heat treated b. High carbon steel with heat treated c. High carbon steel only d. Low carbon steel only

41. Parts are manufactured in a vast number comes under a. Job shop b. Limited production shop c. Mass production shop

42. Striking surface of hammer is heat treated a. To make it soft b. To make it hard c. To decrease its impurity

43. Flattering the end of rivets is an example of a. Peening b. Swaging c. Hammering d. Both a and b

44. Size of hammer is specified by a. Size of hammer in length b. Weight of head with handle c. Weight of head without handle

45. Planishing hammer is a. Claw hammer b. Sledge hammer c. Body hammer d. Mallet

46. Forming and shaping of soft aluminum alloy is accomplished with a. Mallet b. Body hammer c. Claw hammer d. Sledge hammer

47. Amount of force with which the hammer strikes depends a. Materials b. Length of handle c. Weight of head d. All

48. A claw hammer is slightly crowned on face for a. Avoid chipping b. Nail driving c. Appearance d. Used on hardened steel

49. MTCS i. Straight peen hammer have peen parallel to axis of the handle and used for stretching a piece of

stock in direction of its width ii. Cross peen hammer have been perpendicular to axis of the handle and used for stretching of a

piece of stock in directing width iii. Hard hammer is made of carbon steel iv. Hammer handle be gripped near the end so that full leverage may obtained

a. Only 1, 3 and 4 are correct b. Only 2, 3 and 4 are correct c. Only 3 and 4 are correct d. Only 1 and 3 are correct

50. Solid punches are classified according to the a. Length of their point b. Weight of punch c. Shape of their points d. Use of punches

51. Flat tip and uniform shank identify the punches a. Prick punch b. Pin punch c. Drift punch d. Automatic center punch

52. ________________ provide an indentation that is approx. the cutting angle of drill a. Prick punch b. Center punch c. Transfer punch d. Drive punch

53. MTCS i. The crown shape of punch allow the chance of the punch splitting or chipping ii. Prick punch is used to transfer the dimension from a paper pattern directly on metal


54. Identify the screw drivers a. Reed and prince b. Philips c. Cross – point d. Tri – wing

55. Mark the correct statements i. Reed and prince screw drivers has a perfect cross on its tip of its pit is blunt point ii. Reed and prince has only one taper to the point of peen and prince


56. Spreading of metal by hammering is a. Pinning b. Peening c. Logging of small partial

57. Pin is a. It formed side of hammer b. A straight cylindrical or tapered fastenerc. Used to draw bend d. All

58. Identify the punch a. Prick punch b. Drift punch c. Center punch

59. By the screw driver tightens or loosens the screw depending on the screw driver setting is a. Reversible blade screw driver b. Yankee ratchet screw driver c. Offset screw driver d. Reed and prince screw driver

60. At the time inserting or removing slotted screw the screw driver blades should fill a. Must be 70% of screw slot width b. At least 75% of screw slot width c. At least 70% of screw slot width d. Must be 75% of screw slot width

61. At a place where vertical space is limited which screw driver is used stubby screw driver a. Stubby screw driver b. Offset screw driver c. Reed and prince d. Yankee ratchet type

62. Wrenches are made of a. Stainless steel b. Chrome vanadium c. Forged nickel and vanadium d. Forged titanium and chromium

63. Openings of open – end wrench are normally angled at a. 10° b. 15°c. 20°d. 25°

64. Identify the wrench a. Tool – post wrench b. Square box wrench c. Check nut d. Open – square box end wrench

65. To adjust an error in micrometer __________ wrench is used a. Pin hook b. Adjustable pin face c. Adjustable hook spanner wrench d. Hex hey

66. To remove the spark plug of two wheeler ___________ wrench is used a. T – handle tap wrench b. T – Socket wrench c. Offset socket wrench d. Check nut

67. Square box wrench the square opening is made at an angle of a. 22 ½b. 32 ½c. 20 ½d. 15 ½

68. 4 and 8 points sockets are used for a. Hexagon head nut and bolt b. Square head nut and boltc. Octagonal head and bolt d. All

69. Hacksaw blade is a thin piece of steel a. About 0.027” thick b. ½ in wide c. 6 to 12 inch in length d. all

70. MTCS i. Length of hacksaw blade is determine from center of the hole at end to center of hole at another

end of the bladeii. Wrench which is to be used its size is measurement of the opening

a. Only i is correct b. Only 2 is correct c. Both are correct d. None

71. Slotting hacksaw blade is a. Similar to other hacksaw blade b. It is in 8 x ½ inch c. Available in four different thickness d. All

72. New cut should be started with new blade a. Set of teeth of old blade is worn b. Cut made by old blade is narrower c. New blade will break if it is forced in to the old cut d. All

73. MTCS i. Saw as close as possible to the point where the work is clamped to prevent chattering ii. Reduce the pressure on forward strock when the blade is almost through the cut


74. High speed steel is called a. Vanadiumb. Molybendum c. Nickel d. Stainless steel

75. Purpose of set of saw a. Prevent obligatory in slot b. Make the cutting operation easier c. Reduce friction between blade and work d. All

76. Flexible – back blade is a. Part where teeth are cut is hardened b. Except teeth all part of blade is hardened c. Alternate teeth are hardened d. Whole blade is soft

77. Material with thickness between 1/16” & ¼” which type of blade is recommended teeth per inch a. 14 b. 18 c. 24 d. 32

78. Sheet metal less than 18 gauge thickness which hacksaw blade is recommended teeth per inch a. 14 b. 18c. 24d. 32

79. If two plain cylinder are placed in contact with one other and one is rotated while other will start its rotate the speed of driven gear is depends on a. No. of teeth b. Amount of slippage c. Size of gear d. All

80. A spur gear is a cylinder or wheel with a. Teeth cut at an angle to the axis of rotation b. Teeth cut 90° to the axis of rotation c. Teeth cut perpendicular to the axis of rotation d. Teeth cut at an same angle to axis of rotation

81. In pair of wheel one wheel has 100 teeth & other has 120 teetha. Wheel with 100 teeth is gear & 120 is a pinion b. Wheel with 100 teeth is pinion & 120 is a gear c. Wheel with 100 teeth is pinion & 120 is a gear d. As in c and either could be driven and other the driven

82. Spur gear comes under category of a. Parallel axis gear b. Intersecting axes gear c. Non – parallel d. Rotary to translation

83. Flat files are preferred in a. Bastard grade b. Second cut grade c. Rough grade d. Both a and b

84. One or both edges are safe edges file is a. Flat file b. Hand file c. Piller file d. Warding file

85. For filling internal angle that are less than 90°, for cleaning out square corner which file is use a. Knife file b. Three square file c. Piller file d. Swiss pattern file

86. Files made with convex surface because a. To prevent all the teeth from cutting at the same time b. For better control over file c. Prevent rocking d. All

87. Draw filling isa. The operation of pushing and pulling a file length wise with the work b. The operation of pushing and pulling a file width wise with the work c. Both operation as in a & b alternatelyd. None

88. A chisel is used to recenter a drill which has moved away from its intented center a. Flat cold chisel b. Cap chisel c. Roundnose chisel d. Diamond point chisel

89. Chisel are made of a. Eight sided b. Harden and tampered tool steel c. Cutting edge is slightly convex d. All

90. Cutting angle of chisel for cutting iron of steel is a. 70°b. 60°c. 65°d. 85°

91. Egg beater drill is a a. A drill that drill a hole ¼” diameter and more using hand drill b. A drill that drill a hole ¼” diameter and under using hand drill c. A drill that drill a hole 1/8th diameter and under using hand drill d. A drill that drill a hole 1/8th diameter and more using hand drill

92. A twist drill with three or four flute are used a. For heat dissipation b. To follow smaller drill c. To drill thick material d. All

93. A flat drill a. Preferred for drilling brass b. It does not slide of at hand spot in steel c. It will not dig in or feed itself into material d. All

94. No rack angle drill is a. Twist drill b. Flat drill c. Straight flut drill d. Oil – hole drill

95. MTCS i. Margin ensures that the hole will be accurate size ii. Body clearance reduces the friction between the drill and the walls of the hole being drilled

a. Only 1 is correct b. Only 2 is correct c. Both are correct d. Both are incorrect

96. Backbone of drill is a. Land b. Flute c. Web d. Shank

97. MTCS i. Web gives additional rigidity to the drill ii. Web is the metal column, which runs the entire length of the drill between the flute

a. Only 1 is correct b. Only 2 is correct c. Both are correct d. None

98. Cutting angle for magnesium alloys a. 150°b. 100°c. 60° d. 125 – 135°

99. To prevents the blade from binding in the slot a. Teeth are set b. Use low pitch blade c. Use flexible blade d. At least 2 to 3 teeth should be in contact

100. Hacksaw blade may be set in frame in a. 4 different positions b. 2 different positionsc. only 1 position d. 6 different positions

101. __________ is cylinder with teeth resembling those of an acme thread a. Worm gear b. Worm c. Bevel gear d. Helical gear

102. MTCS i. Before each, use the torque wrench should be visually inspected for damage ii. If a bent pointer, cracked or broken glass, signs of rough handling are found the wrench must be

tested iii. Torque wrench must be tested at periodic intervals iv. The three most commonly used torque wrenches are the deflecting beam, dial indicating and

micrometer setting types a. Only i and ii are correct b. Only ii and iii are correct c. Only ii, iii and iv are correct d. All are correct

103. Aviation snip can be identified by a. Their length b. Their shape c. Their jaw opening d. All

104. MTCS i. Right – cut snips, when held in your hand, the upper jaw is on the right ii. Right hand snips have red handle


105. MTCS i. Tinner snip ranges in length from about 7-12 inchii. Tinner sinp are basically used for making straight cut and also to cut curves to either right or left.


106. Files are classified with regard to a. Physical shap b. Length c. Type of cut d. All

107. Vixen file have a. Curved teeth b. No taper either in width or thickness c. A special file holder d. All

108. Stubby screw driver has a. A blunt edge b. Blade length of upto 2 inch c. Only wooden handle d. All are correct

109. MTISi. Tightening a bolt or nut to a pre – determined torque or pre – load with the torque wrench ii. A torque wrench is a precision measuring tools that measure the amount of force applied to a

fastener iii. There are three types of torque wrenches – deflecting beam type, torsion type and toggle type iv. Toggle type torque wrench is preset to a value before use

a. Only i and ii are incorrect b. Only ii is incorrect c. Only iv is incorrect d. None

110. A bearing a. Provide support or guide to moving parts in positioned with respect to other mechanism b. Used to reduce friction or wear c. Classified by type of rolling element used d. All

111. Identify the which is not component of bearing a. Outer ring b. Cage c. Guide ring d. Spindle

112. Ball bearing and roller bearing are designed for operation under a. Continuous rotary b. Oscillatory c. Both d. None

113. Throat and throat radius are termed used in a. Helical b. Worm gear c. Bevel gear d. Herringbone gear

114. In a gear train with three wheels having 15, 10 & 30 teeth, velocity ratio of third wheel to first wheel shall be a. 0.5 in same direction b. 0.5 in opposite direction c. 2 in opposite direction d. 2 in same direction

115. A rake is a gear of infinite a. Pitch b. Module c. Diameter d. Number of teeth

116. What is tapers in a tapered roller bearing a. Cage b. Roller c. Inner race d. Outer race

117. Tapered roller bearing accept a. Radial load only b. Axial load only c. Shear load only d. Both a and b

118. Which is not a ball bearing a. Radial b. Thrust c. Tapered d. Angular contact

119. In radial bearing axial load limited due to a. Presence of no. of ball b. Presence of the race way interruption c. Presence of less no. of ball d. Both a and b

120. Buttress thread is a. Combination of triangular and the square thread b. One flank is perpendicular to axis + as in ac. As in b plus angle between flank in 53°d. As in c plus used in ratchets

121. Identify which is not modified square thread a. Acme thread b. Brown and sharp worm thread c. Sellers thread d. Knuckle thread

122. In specification of thread ½ - 14 Nf – 4 B – 4 holes digit ‘4’ designate a. No. of thread per inch b. Class of fit c. Nominal size

123. In thread specification 4B means a. Medium fit and external thread b. Close fit and internal thread c. Free hit and external & internal thread both d. Force fit only

124. ___________ has smaller major diameter and pitch diameter a. No. 1 serial tap b. No. 2 serial tap c. No. 3 serial tap d. No. 4 serial tap

125. A tap is used for finishes the thread to size a. No. 1 serial tap b. No. 2 serial tap c. No. 3 serial tap d. No. 4 serial tap

126. Gear “A” having 60 teeth and gear “B” having 20 teeth are meshing gears its speed ratio is a. 3 : 1b. 1 : 3c. 6 : 2d. None

127. In simple gear train a. Driver and driven are mounted on same shaft b. Driver and idler are mounted on different shaft c. Driver, driven and idler are mounted on separate shaft d. Idler is between driver and driven gear and all these are mounted on separate shaft

128. Number of teeth per inch of pitch diameter is a. Pitch circle b. Diametrical pitch c. Pitch diameter d. Circular pitch

129. The distance from the center of one tooth to the next consecutive tooth measured on the pitch circle is a. Pitch diameter b. Diametrical pitch c. Circular pitch d. Chordral thickness

130. Pressure angle of stub tooth is a. 14 ½ °b. 20 °c. 25 °d. 35 °

131. A wheel that has teeth on a part of its periphery only is a. Gear sector and used to change rotary motion into reciprocating motion b. Gear sector and used to transmit power in an intermittent manner c. Gear sector and used to transmit motion from one direction to other d. Gear rack and used transmit motion in one direction to other

132. In figure gear “A” have 10 teeth and gear “B” have and 8 teeth which is gear and pinion in these two gears

a. Gear “A” is pinion while “B” is gear b. Gear “B” is gear while “A” is pinion c. Neither “A” is gear nor “B” is pinion

133. MTCS i. Dedendum includes the clearance ii. Dedendum is the tooth portion below the pitch circle

a. Only i is correct b. Only ii is correct c. Both are correct d. Both are incorrect

134. Pitch diameter plus twice of addendum is a. Dedenudum b. Whole depth c. Outside diameter d. Pitch circle

135. ______________ have infinite radius a. herringbone gear b. Miter gear c. Straight bevel gear d. Gear rack

136. A bearing does not employ steel balls a. Radial b. Angular contact c. Thrust d. Needle

137. In figure shows the bearing a. Radial b. Angular contact c. Cylindrical roller d. Tapered roller

138. MTCS i. Thurst bearing never run unloaded ii. Angular contact bearing suitable for carrying heavy load at low speed

Only i is correct Only ii is correct Both are correct None

139. This is essential condition for _______ bearing that radial load should always be lighter than axial load a. Angular contact b. Thrust c. Radial d. Needle

140. A bearing have higher degree of accuracy a. Tapered roller4 b. Needle c. Thrust d. Instrument precision

141. MTCS i. Cylinder roller bearing are capable of carrying greater radial load than ball bearing ii. Cylinder roller bearing have greater contact area

a. Only i is correct b. Only ii is correct c. Both d. None

142. A bearing designed for carrying pure radial load and used where movement is oscillatory rather than rotary a. Anguar contact b. Needle c. Spherical roller d. Thrust

143. A bearing accepting simultaneous radial and axial load in one direction a. Angular contact b. Tapered roller c. Needle d. Radial

144. MTCS i. Spherical roller bearing is capable of withstanding heavy radial and moderate axial load from

either direction ii. Cage is bearing serve to maintain uniform rolling element spacing in the races of inner and outer

ring a. Only i is correct b. Only ii is correct c. Both d. None

145. Identify the part of tapered roller bearing a. Cup b. Cone c. Rib d. Inner ring

146. In wire gauge No. 1 is a. Largest size with 0.228 inch diameter b. Smaller with 0.228 inch diameter c. Largest size 0.413 inch diameter d. Smallest with 0.0135 inch diameter

147. Non – parallel non intersecting gear is a. Rack and pinion b. Hypoid and as in a c. As in b and worm gear d. As in c and helical gear

148. Miter gear a. Is straight bevel gear b. Having same number of teeth c. As in b and shaft intersecting angle is 90°d. All

149. Spiral bevel gear a. Have large load carrying capacity b. Pressure angle is 14 ½ & 20°c. Spiral angle is 45°d. All

150. Hypoid gear a. Is similar to spiral bevel gear b. Spiral pinion is stonger than hypoid c. Used for higher reduction ratio than spiral bevel gear d. Only a and b are correct

151. MTCSi. Hypoid pinion are stronger than spiral bevel pinion because the helix angle is largen than that

gear ii. Zero bevel having zero degree mean spiral angle

a. Only i is correct b. Only ii is correct c. Both d. None

152. A gear used to transmit a motion form one shaft to another shaft, which is parallel with it or which is non parallel with it a. Herringbone b. Worm & woom c. Helical d. Hypoid bevel

153. MTCS i. Worm and worm gear are designed to run in an oil bath, as in automobile transmission ii. In helical gear two mating gears must have equal helix angle but apposite hand


154. MTCS i. Herringbone gear is right hand and left hand helices ii. Herringbone gear eliminate use of thrust bearing use under axial load in helical gear

a. Only 1 is correct b. Only ii is correct c. Both are correct d. None

155. A surface plate a. Use for laying out and inspecting work piece b. Provide smooth, true plane surface from which measurement may be made c. Granite plat is non – magnetic d. All

156. A tool used scribe a line on metal being laid out a. Scriber b. Punch c. Scale d. Scraper

157. Which tool can be used to measure the alignment of rotor shaft or the plane rotation of disk a. Dial indicator b. Shaft gauge c. Protractor d. Depth gauge

158. Which number represents the vernier scale gradation of a micrometer a. 0.0001 b. 0.001c. 0.0011

159. A clearance between the piston ring and the ring land is measured with a. Micrometer caliper b. Thickness gauge c. Depth gauge

160. A tool used for remove sharp internal edges form soft bushing a. Three square scraper b. Triangular file c. Tinner snip d. All

161. The rake angle is 90° or more a. It will give a good cutting b. Cutting edge become so thin that it brent down under the strain work c. As in a and make the lightly rolled chip d. As in a and make a chip tends to cut into a more loosely rooled helix

162. Lip clearance angle of drill a. 8 ° to 2°b. 12 ° to 15°c. 59°d. 118°

163. The measurement reading the illustrated micrometer is a. 0.241b. 0.2401c. 2.4001d. 2401

164. The measurement reading the illustrated micrometer is a. .4753b. .4693c. .4359d. 4.953

165. The measurement reading the illustrated micrometer a. .627b. .527c. 1.627d. 2.627

SUBJECTIVE

1. Write down definations a. Margin b. Point c. Body Clearance

2. Write about radial ball bearing 3. Write down definition

a. Basic size b. Limit c. Tolerance d. Clearance e. Allowance

4. Write down short notes on a. Counter sinking b. Counter boring

5. What is meant by pinning and cause of pinning 6. Write down definition of

a. Root b. Crest c. Lead d. Pitch e. Depth of gauge

7. What is gear rack, purpose and its linear pitch 8. Short notes on surface plate 9. Precaution while hammering 10. Necessity of lubrication of gear

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