600 Important Machine Design MCQ Question and Answer | PDF Free Download
1.The endurance limit of a material with finished surface in comparison to rough surface is
- AMore
- BLess
- CSame
- DMore or less depending on quantum of load
2.A saddle key __________ power through frictional resistance only.
- ATransmits
- BDoes not transmit
- CEither A or B
- DNone of these
3.In case of pressure vessels having closed ends, the fluid pressure induces
- ALongitudinal stress
- BShear stress
- CCircumferential stress
- DNone of these
4.In order to obtain bolt of uniform strength
- AIncrease shank diameter
- BIncrease its length
- CDrill an axial hole through head up to threaded portion so that shank area is equal to root area of thread
- DTighten die bolt properly
5.The function of the washer is to
- AFill up the axial gap
- BProvide bearing area
- CProvide cushioning effect
- DAbsorb shocks and vibrations
6.The face of the tooth is the
- ASurface of the top of the tooth
- BSurface of the tooth above the pitch surface
- CSurface of the tooth below the pitch surface
- DWidth of the tooth measured along the pitch circle
7.The flank of the tooth is the
- ASurface of the top of the tooth
- BSurface of the tooth above the pitch surface
- CWidth of the tooth measured along the pitch circle
- DSurface of the tooth below the pitch surface
8.The velocity of sliding __________ the distance of the point of contact from the pitch point.
- AIs directly proportional to
- BIs inversely proportional to
- CIs equal to cos φ multiplied by
- DDoes not depend upon
9.The washer is generally specified by its
- AOuter diameter
- BHole diameter
- CThickness
- DMean diameter
10.Taper on the cotter and slot is provided
- AOn both the sides
- BOn one side only
- COn none of the sides
- DMay be provided anywhere
11.According to Indian standards, the diameter of rivet hole is made larger than the basic size of rivet by
- A0.5 mm up to rivet diameter of 24 mm
- B1 mm for rivet diameter from 27 mm to 36 mm
- C2 mm for rivet diameter from 39 mm to 48 mm
- DAll of the above
12.For low and moderate speed engines, the cam follower should move with
- AUniform velocity
- BSimple harmonic motion
- CUniform acceleration and retardation
- DCycloidal motion
13.For high speed engines, the cam follower should move with
- AUniform velocity
- BSimple harmonic motion
- CUniform acceleration and retardation
- DCycloidal motion
14.A double fillet welded joint with parallel fillet weld of length 'l' and leg 's' is subjected to a tensile force 'P'. Assuming uniform stress distribution, the shear stress in the weld is given by
- A√2P/s.l
- BP/2.s.l
- CP/√2.s.l
- D2P/s.l
15.The square threads are usually found on
- ASpindles of bench vices
- BRailway carriage couplings
- CFeed mechanism of machine tools
- DScrew cutting lathes
16.The acme threads are usually found on
- ASpindles of bench vices
- BRailway carriage couplings
- CFeed mechanism of machine tools
- DScrew cutting lathes
17.Buttress threads are usually found on
- AScrew cutting lathes
- BFeed mechanisms
- CSpindles of bench vices
- DRailway carriage couplings
18.Lewis equation in gears is used to find the
- ATensile stress in bending
- BShear stress
- CCompressive stress in bending
- DFatigue stress
19.The centrifugal tension in belts
- ADecreases the power transmitted
- BIncreases the power transmitted
- CIncrease the wrap angle
- DIncreases the belt tension without increasing power transmission
20.In helical gears, the distance parallel to the axis, between similar faces of adjacent teeth, is called
- ANormal pitch
- BAxial pitch
- CDiametral pitch
- DModule