Description : Differences in deflections between two points A and B by the moment area method is given by a.(Area of BMD diagram between A and B ).XB/2EI. b.(Area of BMD diagram between A and B).XB/3EI c.(Area of BMD diagram between A and B) .XB/EI d.None.
Last Answer : c.(Area of BMD diagram between A and B) .XB/EI
Description : A simply supported beam A carries a point load at its mid span. Another identical beam B carries the same load but uniformly distributed over the entire span. The ratio of the maximum deflections of the beams A and B, will be (A) 2/3 (B) 3/2 (C) 5/8 (D) 8/5
Last Answer : (D) 8/5
Description : The Castigliano's second theorem can be used to compute deflections (A) In statically determinate structures only (B) For any type of structure (C) At the point under the load only (D) For beams and frames only
Last Answer : (B) For any type of structure
Description : A beam is designed on the basis of a. Maximum bending moment b. Minimum shear force. c.Maximum bending moment as well as for maximum shear force d. None.
Last Answer : c.Maximum bending moment as well as for maximum shear force
Description : Shear stress causes (a) Deformation (b) Distortion (c) Deformation as well as distortion (d) None
Last Answer : b) Distortion
Description : Nature of shear stress is (a) Positive (b) Negative (c) Positive as well as negative (d) None
Last Answer : (c) Positive as well as negative
Description : In continuous beam, the intermediate beams are subjected to a. some bending moment b. no bending moment c. no slope d.no deflection
Last Answer : a. some bending moment
Description : Which of the following theorem can be used for deflection in fixed beams a. Mohr’s first theorem b. Mohr’s second theorem c. Mohr’s third theorem d.Mohr’s fourth theorem
Last Answer : b. Mohr’s second theorem
Description : For the same span and loads fixed beam in comparison with simply supported beams has a. lesser value of maximum deflection b. more value of maximum deflecction c.twice the value of maximum deflecction d.same value of maximum deflecction
Last Answer : a. lesser value of maximum deflection
Description : For the same span and loads fixed beam in comparison with simply supported beams has a. lesser value of maximum bending moment b. more value of maximum bending moment c.twice the value of maximum bending moment d.same value of maximum bending moment
Last Answer : a. lesser value of maximum bending moment
Description : Fixed beam is also called as a. Propped beams b. Pulled-up beam c.Encaster beam d. Stacked beams
Last Answer : c.Encaster beam
Description : .Freely supported beams are assumed to be fixed beams if subjected to a. end loads which makes displacement zero b. end moments c. end couples which makes slope zero d. moments
Last Answer : c. end couples which makes slope zero
Description : Beams of fixed types are statically indeterminant in which equations of equilibrium are a. incompatible b. insufficient c. incomplete d.complete
Last Answer : b. insufficient
Description : Macaulays method is more convenient for beams carrying a. Single concentrated load. b.UDL c. Multi loads d.None.
Last Answer : c. Multi loads
Description : Which of the following are statically determinate beams? (a) Only simply supported beams (b) Cantilever, overhanging and simply supported (c) Fixed beams (d) Continuous beams
Last Answer : (b) Cantilever, overhanging and simply supported
Description : The Point of contraflexure occurs in case of (a) Cantilever beams (b) Simply supported beams (c) Over hanging beams (d) All types of beams
Last Answer : c) Over hanging beams
Description : Deflection due to shear force as compared to bending moment will be a.equal b.less c.More d.None.
Last Answer : b.less
Description : Magnitude of shear stress induced in a shaft due to applied torque varies from a. Maximum at centre to zero at circumference. b. Maximum at centre to minimum (not-zero) at circumference. c. Zero at centre to maximum at circumference. d. Minimum (not zero) at centre to maximum at circumference.
Last Answer : c. Zero at centre to maximum at circumference.
Description : A pre-stressed concrete member is preferred because (A) Its dimensions are not decided from the diagonal tensile stress (B) Large size of long beams carrying large shear force need not be adopted (C) Removal of cracks in the members due to shrinkage (D) All the above
Last Answer : Answer: Option D
Description : A column that fails due to direct stress is called (a) Short column (b) Long column (c) Medium column (d) Slender column
Last Answer : (a) Short column
Description : Most important features of any spring are (a) Deflection, stiffness and strength (b) Stiffness, bending and shear strengths (c) Strain energy, deflection and strength (d) None
Last Answer : (c) Strain energy, deflection and strength
Description : Wahl suggested the correction in the stress factor to account for a. the additional transverse shear stress b. stress concentration c. fatigue stress d. axial stress
Last Answer : b. stress concentration
Description : The type of stress induced in a closed coiled helical tension spring is a. tensile b. compressive c. torsional shear d. tensile and compressive
Last Answer : c. torsional shear
Description : A compression spring is made of music wire of 2 mm diameter having a shear strength and shear modulus of 800 Mpa and 80 Gpa respectively. The mean coil diameter is 20mm, free length is 40 mm, and the number ... by 8 times b. decreased by 2 times c. increased by 2 times d. decreased by 8 times
Last Answer : a. increased by 8 times
Description : Wahl’s stress concentration factor is used in close coiled springs under axial load to account for (a) Shear effect (b) Bending effect (c) Compression effect (d) none
Last Answer : (b) Bending effect
Description : A open helical spring under axial torque is designed on the basis of (a) Shear (b) Compression (c) Bending (d) None
Last Answer : d) None
Description : A closed helical spring under axial torque is designed on the basis of (a) Shear (b) Compression (c) Bending (d) None
Last Answer : (c) Bending
Description : A closed helical spring under axial load is designed on the basis of (a) Shear (b) Compression (c) Bending (d) None
Last Answer : (a) Shear
Description : A carriage spring is designed on the basis of (a) Shear (b) Compression (c) Bending (d) None
Description : A close coiled helical spring is compressed. Its wire is subjected to A. Compression B. Tension C.Shear D. Torque
Last Answer : B. Tension
Description : When two helical springs of equal lengths are arranged to form a cluster spring, then a. Shear stress in each spring will be equal b. Load taken by each spring will be half the total load c. Only A is correct d. Both A and B is correct
Last Answer : d. Both A and B is correct
Description : Find the shear stress in the spring wire used to design a helical compression sprig if a load of 1200N is applied on the spring. Spring index is 6, and wire diameter 7mm. a) 452.2N/mm² b) 468.6N/mm² c) 512.2N/mm² d) None of the listed
Last Answer : b) 468.6N/mm²
Description : Which factor is used to consider the effects of direct shear stress and torsional shear stress when curvature effect stress is not considered? a. Shear stress concentration factor b. Wahl shear stress concentration factor c. Both a. and b. d. None of the above
Last Answer : a. Shear stress concentration factor
Description : The shear stress concentration factor (Ks) in mechanical springs is given as _____ a. (1 + 0.5 / C) b. 0.615 / C c. (1 + 0.615 / C) d. [(4C – 1) / (4C + 1)] + [0.615 / C]
Last Answer : a. (1 + 0.5 / C)
Description : Shear stress in a close coiled helical spring is (a) 16WD/π d3 (b) 32WD/π d3 (c) 8WD/π d3 (d) None
Last Answer : (c) 8WD/π d3
Description : A close coiled spring under axial load produces (a) Bending stresses (b) Shear stresses (c) Tensile stresses (d) None
Last Answer : (b) Shear stresses
Description : When a close-coiled helical spring is subjected to an axial load, it is said to be under. (a) Bending (b) Shear (c) Torsion (d) Crushing
Last Answer : (c) Torsion
Description : Maximum shear stress in a thick shell is a) (σh+ σl)/2 b) (σh+ σr)/2 c) (σh– σl)/2 d) None
Last Answer : b) (σh+ σr)/2
Description : Considering σh, σl and σr, maximum shear stress will be a) (σh—σl) /2 b) (σl— σh) /2 c) (σh + σr) /2 d) None
Last Answer : c) (σh + σr) /2
Description : A thin spherical shell under internal pressure will fail under a. Maximum shear stress b. Principal compressive stress c. Principal tensile stress d. None
Last Answer : c. Principal tensile stress
Description : A thin cylindrical shell under internal pressure can fail by a. Shear b. Compression c. Tension d. None
Last Answer : c. Tension
Description : Strength of a rivet is a. Strength in shear b. Strength in crushing c. Strength in tension d. None
Last Answer : d. None
Description : When a column is subjected to an eccentric load, the stress induced in the column will be (a) direct stress only (b) bending stress only (c) shear stress only (d) direct and bending stress both
Last Answer : (d) direct and bending stress both
Description : Keeping loading same but increasing the length, shear stresses in a beam will (a) Increase (b) Decrease (c) No change (d) None
Last Answer : (c) No change
Description : When sinking is accounted in a continuous beam the shear force is a.modified b.same c.zero d.infinite
Last Answer : a.modified
Description : The design of a beam is based on strength criteria, if the beam is sufficiently strong to resist ----------------. a.Shear force b.deflection c. both a and b. d. none of the above.
Last Answer : a.Shear force
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 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 : A transmission shaft subjected to bending loads must be designed on the basis of (a) maximum normal stress theory (b) maximum shear stress theory (c) maximum normal stress and maximum shear stress theories (d) fatigue strength
Last Answer : (a) maximum normal stress theory