The Following Section consists of Multiple Choice Questions on Machine Design.
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Machine Design MCQ
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Question 1 of 20
1. Question
1 pointsThe sleeve or muff coupling is designed as a
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Question 2 of 20
2. Question
1 pointsScrews used for power transmission should have
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Question 3 of 20
3. Question
1 pointsWhen bevel gears connect two shafts whose axes intersect at an angle greater than a right angle and one of the bevel gears has a pitch angle of 90°, then they are known as
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Question 4 of 20
4. Question
1 pointsThe number of slots in a 25 mm castle nut is
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Question 5 of 20
5. Question
1 pointsA screw is said to be over hauling screw, if its efficiency is
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Question 6 of 20
6. Question
1 pointsThe application of third type levers is found in
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Question 7 of 20
7. Question
1 pointsFor unequal width of butt straps, the thickness of butt straps are
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Question 8 of 20
8. Question
1 pointsIn second type of levers,
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Question 9 of 20
9. Question
1 pointsIn a flange coupling, the flanges are coupled together by means of
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Question 10 of 20
10. Question
1 pointsA transmission shaft includes
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Question 11 of 20
11. Question
1 pointsA locking device in which the bottom cylindrical portion is recessed to receive the tip of the locking set screw, is called
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Question 12 of 20
12. Question
1 pointsSlenderness ratio is the ratio of
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Question 13 of 20
13. Question
1 pointsAccording to Indian standard specifications, 100 H6/g5 means that the
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Question 14 of 20
14. Question
1 pointsWhen screw threads are to be used in a situation where power is being transmitted in one direction only, then the screw threads suitable for this will be
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Question 15 of 20
15. Question
1 pointsIn radial cams, the follower moves
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Question 16 of 20
16. Question
1 pointsIn order to avoid tearing of the plate at an edge, the distance from the centre line of the rivet hole to the nearest edge of the plate should be equal to (where d = Diameter of rivet hole)
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Question 17 of 20
17. Question
1 pointsThe value of stress concentration factor depends upon
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Question 18 of 20
18. Question
1 pointsWhich of the following material has the maximum ductility?
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Question 19 of 20
19. Question
1 pointsWhen a bolt is subjected to shock loading, the resilience of the bolt should be considered in order to prevent breakage at the
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Question 20 of 20
20. Question
1 pointsAn open belt drive is used when
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Machine Design MCQ 2
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Question 1 of 20
1. Question
1 pointsIn unilateral system of tolerance, the tolerance is allowed on
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Question 2 of 20
2. Question
1 pointsThe constant factor in case of R10 series of preferred numbers is
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Question 3 of 20
3. Question
1 pointsThe pipe joint mostly used for pipes carrying water at low pressures is
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Question 4 of 20
4. Question
1 pointsSurface endurance limit of gear material is dependent upon its
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Question 5 of 20
5. Question
1 pointsIn a hydrodynamic lubricated bearing
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Question 6 of 20
6. Question
1 pointsWhich of the following statement is correct for gears?
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Question 7 of 20
7. Question
1 pointsStress concentration is caused due to
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Question 8 of 20
8. Question
1 pointsThe resistance to fatigue of a material is measured by
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Question 9 of 20
9. Question
1 pointsThe load cup of a screw jack is made separate from the head of the spindle to
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Question 10 of 20
10. Question
1 pointsWhich of the following statement is wrong ?
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Question 11 of 20
11. Question
1 pointsThe rolling contact bearings are known as
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Question 12 of 20
12. Question
1 pointsThe backlash for spur gears depends upon
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Question 13 of 20
13. Question
1 pointsThe size of a gear is usually specified by
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Question 14 of 20
14. Question
1 pointsThe bearings of heavy series have capacity __________ over the medium series.
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Question 15 of 20
15. Question
1 pointsIn leaf springs, the longest leaf is known as
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Question 16 of 20
16. Question
1 pointsThe taper on cotter varies from
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Question 17 of 20
17. Question
1 pointsWhich of the following screw thread is used for power transmission in one direction only.
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Question 18 of 20
18. Question
1 pointsWhen the bearing is subjected to large fluctuations of load and heavy impacts, the bearing characteristic number should be __________ the bearing modulus.
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Question 19 of 20
19. Question
1 pointsThe rolling contact bearings as compared to sliding contact bearings have
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Question 20 of 20
20. Question
1 pointsThe maximum normal stress theory is used for
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Machine Design MCQ 3
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Question 1 of 20
1. Question
1 pointsThe difference between the tooth space and the tooth thickness as measured on the pitch circle, is called
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Question 2 of 20
2. Question
1 pointsA sliding bearing which operates without any lubricant present, is called
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Question 3 of 20
3. Question
1 pointsThe radial distance of a tooth from the pitch circle to the top of the tooth is called
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Question 4 of 20
4. Question
1 pointsIn a gear, having involute teeth, the normal to the involute is a tangent to the
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Question 5 of 20
5. Question
1 pointsWhich of the following statement is correct ?
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Question 6 of 20
6. Question
1 pointsIf a bearing is designated by the number 305, it means that the bearing is of
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Question 7 of 20
7. Question
1 pointsTapered roller bearings can take
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Question 8 of 20
8. Question
1 pointsIn order to remove internal stresses produced by hardening the steel, the process usually adopted is
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Question 9 of 20
9. Question
1 pointsA bolt of uniform strength can be developed by
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Question 10 of 20
10. Question
1 pointsThe ratio of endurance limit in shear to the endurance limit in flexure is
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Question 11 of 20
11. Question
1 pointsThe lower deviation is the algebraic difference between the
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Question 12 of 20
12. Question
1 pointsWhen carbon in the cast iron is principally in the form of graphite, the cast iron will be of
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Question 13 of 20
13. Question
1 pointsThe rivet head used for boiler plate riveting is usually
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Question 14 of 20
14. Question
1 points18/8 steel contains
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Question 15 of 20
15. Question
1 pointsThe velocity factor for carefully cut gears operating at velocities upto __________ is equal to 4.5/4.5 + v.
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Question 16 of 20
16. Question
1 pointsA localised compressive stress at the area of contact between two members is known as
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Question 17 of 20
17. Question
1 pointsThe metal suitable for bearings subjected to heavy loads is
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Question 18 of 20
18. Question
1 pointsFor hardening alloy steels and high speed steels, they are heated to
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Question 19 of 20
19. Question
1 pointsAn universal coupling is used to connect two shafts
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Question 20 of 20
20. Question
1 pointsEuler’s formula for a mild steel column is not valid if the slenderness ratio is
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Machine Design MCQ 4
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Question 1 of 20
1. Question
1 pointsThe standard length of the shaft is
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Question 2 of 20
2. Question
1 pointsAccording to I.B.R., when the thickness of boiler shell (t) is greater than 8 mm, then the diameter of rivet hole (d) is obtained by
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Question 3 of 20
3. Question
1 pointsWhen the shaft rotates in anticlockwise direction at slow speed in a bearing, it will
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Question 4 of 20
4. Question
1 pointsA taper key which fits half in the key way of the hub and half in the key way of shaft, is known as
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Question 5 of 20
5. Question
1 pointsA sliding bearing which can support steady loads without any relative motion between the journal and the bearing, is called
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Question 6 of 20
6. Question
1 pointsIn case of pressure vessels having closed ends, the fluid pressure induces
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Question 7 of 20
7. Question
1 pointsA machine part subjected to __________ is called a strut.
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Question 8 of 20
8. Question
1 pointsWhen two helical springs of equal lengths are arranged to form a cluster spring, then
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Question 9 of 20
9. Question
1 pointsFor a shaft diameter of 200 mm, the number of bolts in a marine flange coupling should be
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Question 10 of 20
10. Question
1 pointsThe dedendum circle diameter is equal to (where φ = Pressure angle)
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Question 11 of 20
11. Question
1 pointsWhich one of the following is a positive drive?
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Question 12 of 20
12. Question
1 pointsThe period during which the cam follower remains at rest, when cam moves, is known as
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Question 13 of 20
13. Question
1 pointsThe flank of the tooth is the
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Question 14 of 20
14. Question
1 pointsThe included angle for the British Association thread is
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Question 15 of 20
15. Question
1 pointsThe contact ratio is the ratio of
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Question 16 of 20
16. Question
1 pointsThe cracks in helical springs used in railway carriages usually start on the inner side of the coil because of the fact that
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Question 17 of 20
17. Question
1 pointsIn a marine flange coupling, the thickness of flange is taken as
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Question 18 of 20
18. Question
1 pointsThe wire ropes make contact at
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Question 19 of 20
19. Question
1 pointsWhen the speed of belt increases,
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Question 20 of 20
20. Question
1 pointsAn involute pinion and gear are in mesh. If both have the same size of addendum, then there will be interference between the
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