Description : Does ASME Standard take into consideration shock and fatigue factors? a) Yes b) No
Last Answer : a) Yes
Description : The endurance or fatigue limit is defined as the maximum value of the stress which a polished standard specimen can withstand without failure, for infinite number of cycles, when subjected to (a) static load (b) dynamic load (c) static as well as dynamic load (d) completely reversed load
Last Answer : (d) completely reversed load
Description : If yielding strength=400N/mm2, the find the permissible shear stress according to ASME standards. a) 72 N/mm2 b) 76 N/mm2 c) 268 N/mm2 d) 422 N/mm2
Last Answer : a) 72 N/mm2
Description : According to the ASME code, maximum allowable shear stress is taken as X% of yield strength or Y% of ultimate strength. a) X=30 Y=18 b) X=30 Y=30 c) X=18 Y=18 d) X=18 Y=30
Last Answer : a) X=30 Y=18
Description : May sockets be provided in the wall of a fitting? a) No. b) Yes. c) Yes, in accordance with ASME B16.5, figure 4. d) Yes, as permitted in ASME B16.20.
Last Answer : c) Yes, in accordance with ASME B16.5, figure 4.
Description : Is it permissible to install tapped holes in fittings per ASME B16.5 a) No. b) Yes. c) Yes, if the metal is thick enough to allow the required thread length. d) Yes, as permitted by ASME B16.20.
Last Answer : c) Yes, if the metal is thick enough to allow the required thread length.
Description : When a raised face flange gasket surface is machined to a flat face surface, does the flange still comply with ASME B31.3? a) No. b) Yes. c) Yes, provided the flange meets thickness requirements for flat faced flanges per ASME B31.3. d) Yes, if approached by the flange committee.
Last Answer : c) Yes, provided the flange meets thickness requirements for flat faced flanges per ASME B31.3.
Description : Does ASME B16.5 specify requirements for the alignment and assembly of joints? a) Yes. b) No.
Last Answer : b) No.
Description : Can a manufacturer or contractor use flanges or fittings made in conformance to an earlier edition ASME B16.5 on a current project? a) No. a) b) Yes. b) Yes, if in conformance with the current edition of ASME B16.5. c) Yes, if permitted by the owner-user.
Last Answer : b) Yes, if in conformance with the current edition of ASME B16.5.
Description : What must be considered when using flanges at the ratings listed in ASME B16.5 at low temperatures? a) Toughness. b) Shock loadings. c) Sudden changes of stress or temperature. d) All of the above.
Last Answer : c) Sudden changes of stress or temperature.
Description : The shock absorbing capacity of bolt can be increased by making the shank diameter ________ the root diameter. a) Lesser than b) Equal to c) Greater than d) No effect
Last Answer : b) Equal to
Description : _____ is a surface fatigue failure which occurs when the load on the bearing part exceeds the surface endurance strength of the material. (a) Scoring (b) Pitting (c) Corrosion
Last Answer : (b) Pitting
Description : Scoring is a ________ phenomenon. (a) stick-slip (b) fracture (c) fatigue (d) in-out
Last Answer : (a) stick-slip
Description : Extreme Pressure (EP) additives cause ______ wear in the bearing parts. (a) abrasive (b) corrosive (c) pitting (d) fatigue
Last Answer : (b) corrosive
Description : Scoring is a ________ phenomenon. a) Stick-slip b) Fracture c) Fatigue d) In-out
Last Answer : a) Stick-slip
Description : Propagation of fatigue failure is always due to compressive stresses. a) Due to bending b) Due to tensile c) Due to fatigue d) None of the listed
Last Answer : b) Due to tensile
Description : What will happen if stresses induced due to surge in the spring exceeds the endurance limit stress of the spring. a) Fatigue Failure b) Fracture c) None of the listed d) Nipping
Last Answer : a) Fatigue Failure
Description : The connecting rod bolts are tightened up with the initial tension greater than external load so that (A) Failure of bolt will be static (B) The resultant load on bolt will not be affected by ... ) The bolt will not fail by fatigue although the external load is fluctuating (D) All the three
Last Answer : (D) All the three
Description : When a material is subjected to fatigue loading, the ratio of the endurance limit to the ultimate tensile strength is (a) 0.20 (b) 0.35 (c) 0.50 (d) 0.65
Last Answer : (c) 0.50
Description : Factor of safety for fatigue loading is the ratio of (a) elastic limit to the working stress (b) Young's modulus to the ultimate tensile strength (c) endurance limit to the working stress (d) elastic limit to the yield point
Last Answer : (c) endurance limit to the working stress
Description : The yield point in static loading is ............... as compared to fatigue loading. (a) higher (b) lower (c) same
Last Answer : (a) higher
Description : The resistance to fatigue of a material is measured by (a) elastic limit (b) Young's modulus (c) ultimate tensile strength (d) endurance limit
Last Answer : (d) endurance limit
Description : Failure of a material is called fatigue when it fails (a) at the elastic limit (b) below the elastic limit (c) at the yield point (d) below the yield point
Last Answer : (d) below the yield point
Description : The relationship between the alternating stress and mean stress is given by the following equation: σ a =σ e [1-(σ m /σ u )x], where σ e is the fatigue limit for completely reversed loading. The value of x for Gerber line is equal to _________ a) 1 b) 2 c) 0.5 d) -1
Last Answer : b) 2
Description : Calculate fatigue stress concentration factor, when theoretical stress concentration factor is 1.62 and notch sensitivity is equal to 0.9 a. 1.558 b. 3.358 c. 1.162 d. None of the above
Last Answer : a. 1.558
Description : In S-N diagram, the graph plotted between fatigue strength and number of stress cycles becomes horizontal for which type of materials? a. Ferrous materials b. Non-ferrous materials c. Both a. and b. d. None of the above
Last Answer : a. Ferrous materials
Description : Notch sensitivity (q) is given by the equation _______ where K f = fatigue stress concentration factor and K t = theoretical stress concentration factor a. ( K f + 1 ) / ( K t – 1 ) b. ( K f – 1 ) / ( K t – 1 ) c. ( K f + 1 ) / ( K t + 1 ) d. ( K f - 1 ) / ( K t + 1 )
Last Answer : b. ( K f – 1 ) / ( K t – 1 )
Description : There is sufficient plastic deformation prior to fatigue failure, which gives a warning well in advance. a) True b) False
Last Answer : b) False
Description : Fatigue failure is time dependent failure. a) True b) False
Last Answer : a) True
Description : The phenomenon of decreased resistance of the materials to fluctuating stresses is the main characteristic of _____ failure. a) Fracture b) Fatigue c) Yielding d) None of the mentioned
Last Answer : b) Fatigue
Description : Deformation that occurs due to stress over a period of time is known as ____________ a) Wear resistance b) Fatigue c) Creep d) Fracture
Last Answer : c) Creep
Description : The ability of materials to develop a characteristic behavior under repeated loading known as ___________ a) Toughness b) Resilience c) Hardness d) Fatigue
Last Answer : d) Fatigue
Description : The notch sensitivity q is expressed in terms of fatigue stress concentration factor Kf and theoretical stress concentration factor Kt as (A) (Kf + 1)/ (Kt + 1) (B) (Kf - 1)/ (Kt - 1) (C) (Kt + 1)/ (Kf + 1) (D) (Kt - 1)/ (Kf - 1)
Last Answer : (B) (Kf - 1)/ (Kt - 1)
Description : There is a problem of alignment in deep groove ball bearings. (a) Yes (b) No, it is self-aligning (c) It aligns itself only in some particular cases (d) Can’t be determined
Last Answer : (a) Yes
Description : Deep groove ball bearings create a lot of noise. (a) Yes (b) Depends on the application (c) They create very less noise (d) No reference frame for comparison is mentioned
Last Answer : (c) They create very less noise
Description : There is problem of alignment in deep groove ball bearings. a) Yes b) No, it is self-aligning c) It aligns itself only in some particular cases d) Can’t be determined
Description : Deep groove ball bearings creates a lot of noise. a) Yes b) They create very less noise c) Depends on the application d) No reference frame for comparison is mentioned
Last Answer : b) They create very less noise
Description : Bending stress in graduated length leaves are more than that in full length leaves. a) Yes b) No c) In some cases d) Can’t be stated
Last Answer : b) No
Description : Spiral spring is quite rigid. a) Yes b) No it is flexible c) It is of moderate rigidity d) Rigidity can’t be determined
Last Answer : b) No it is flexible
Description : The load shared by each spring is inversely proportional to the cross section of wire. a) Yes b) No, it is directly proportional c) It is proportional to its square d) It is proportional to its square root
Last Answer : b) No, it is directly proportional
Description : Taper is made cotter and slot on both the side. A. Yes B. No
Last Answer : B. No
Description : Filler material is used in electric resistance welding. a) Yes b) No filler material used c) Depends on the type of welding d) None of the listed
Last Answer : b) No filler material used
Description : Forge welding involves heating of parts to elastic stage and joint is prepared by impact force. a) Yes b) No, it is done up to plastic stage c) Heating is done up to boiling point d) None of the listed
Last Answer : b) No, it is done up to plastic stage
Description : All welding processes require pressure along with heat. a) Yes b) No, fusion doesn’t require c) Can’t be stated d) None of the listed
Last Answer : b) No, fusion doesn’t require
Description : A knuckle joint can be used in valve mechanism of a reciprocating engine. a) Yes b) No c) Yes but there are stress probles d) No as it is very dangerous to use
Description : Knuckle Joint can’t be used to connect two intersecting rods. a) Yes b) No, it can’t be used c) It can be used with some modificatios d) It is expensive and hence isn’t used
Last Answer : b) No, it can’t be used
Description : Set screws are subjected to tensile forces only. a) Yes b) No, they are subjected to compressive forces only c) Both compressive and tensile d) Can’t be determined
Last Answer : b) No, they are subjected to compressive forces only
Description : Does shaft has to be shifted i axial direction to remove clamp coupling. a) Yes b) No