Description : A beam of T-section is subjected to a shear force of F. The maximum shear force will occur at the a. top of the section b. bottom of the section c. neutral axis of the section d. junction of web and flange
Last Answer : c. neutral axis of the section
Description : Shear stress is maximum at the (a) Outermost fiber (b) Central fiber (c) Neither outermost nor central fiber (d) None
Last Answer : (b) Central fiber
Description : Shear stress is zero at the (a) Outermost fiber (b) Central fiber (c) Neither outermost nor central fiber (d) None
Last Answer : (a) Outermost fiber
Description : A hollow prismatic beam of circular section is subjected to a torsional moment. The maximum shear stress occurs at (a) inner wall of cross section (b) middle of thickness (c) outer surface of shaft (d) none of these
Last Answer : (c) outer surface of shaft
Description : The average shear stress in a beam of circular section is _______ times the maximum shear stress. a. 0.75 b. 1.5 c. 4/3 d. equa
Last Answer : a. 0.75
Description : A beam of uniform strength has a. same cross-section throughout the beam b. same bending stress at every section c. same bending moment at every section d. same shear stress at every section
Last Answer : b. same bending stress at every section
Description : Shear stress in the beam acting on the cross section is (a) Normal to the cross section (b) Tangential to the cross section (c) Neither normal nor tangential (d) None
Last Answer : b) Tangential to the cross section
Description : What is the shear stress acting along the neutral axis of triangular beam section, with base 60 mm and height 150 mm, when shear force of 30 kN acts? a. 15.36 N/mm2 b. 10.6 N/mm2 c. 8.88 N/mm2 d. Insufficient data
Last Answer : c. 8.88 N/mm2
Description : The slope of shear force line at any section of the beam is also called (a) Bending moment at that section (b) Rate of loading at that section (c) Maximum Shear force (d) Maximum bending moment
Last Answer : (b) Rate of loading at that section
Description : A T-section beam having flange 180mm wide and 20 mm thick and web 150 mm long and 20 mm thick carries a udl of 80 kN/m over an effective span of 8 m. Calculate the maximum bending stress.
Last Answer : Solution :
Description : The shear stress acting on the neutral axis of a beam is _____ a. maximum b. minimum c. zero d. none of the above
Last Answer : a. maximum
Description : What is the average shear stress acting on a rectangular beam, if 50 N/mm2is the maximum shear stress acting on it? a. 31.5 N/mm2 b. 33.33 N/mm2 c. 37.5 N/mm2 d. 42.5 N/mm2
Last Answer : b. 33.33 N/mm2
Description : The ratio of maximum bending stress to maximum shear stress on the cross section when a shaft is simultaneously subjected to a torque T and bending moment M, a. T/M b. M/T c. 2T/M d. 2M/T
Last Answer : d. 2M/T
Description : Maximum shear stress in a triangular section ABC of height H and base B occurs at _________ a. H b. H/2 c. H/3 d. neutral axis
Last Answer : b. H/2
Description : The ratio of maximum shear stress to average shear stress is 4/3 in _______ a. circular cross-section b. rectangular cross-section c. square cross-section d. all of the above
Last Answer : a. circular cross-section
Description : A uniformly distributed load of 20 kN/m acts on a simply supported beam of rectangular cross section of width 20 mm and depth 60 mm. What is the maximum bending stress acting on the beam of 5m? a. 5030 Mpa b. 5208 Mpa c. 6600 Mpa d. Insufficient data
Last Answer : b. 5208 Mpa
Description : Under sagging bending moment, the uppermost fiber of the beam is in (a) Shear (b) Compression (c) Tension (d) None)
Last Answer : (b) Compression
Description : Find the shear stress in a flange at the junction of hub in rigid flanged coupling if torsional moment is 2980N-m and diameter of hub being 125mm. Also the thickness of flange is 25mm. a) 6.77N/mm2 b) 10.24N/mm2 c) 4.84N/mm2 d) 4.22N/mm2
Last Answer : c) 4.84N/mm2
Description : A cast iron T section beam is subjected to pure bending. For maximum compressive stress to be three times the maximum tensile stress, centre of gravity of the section from flange side is (A) h/4 (B) h/3 (C) h/2 (D) 2/3 h
Last Answer : (A) h/4
Description : When a shaft is subjected to a twisting moment, every cross-section of the shaft will be under (a) Tensile stress (b) Compressive stress (c) Shear stress (d) All of these
Last Answer : c) Shear stress
Description : What is the shear stress acting along the neutral axis, over a triangular section? a. 2.66 (S/bh) b. 1.5 (S/bh) c. 0.375 (S/bh) d. None of the above
Last Answer : a. 2.66 (S/bh)
Description : The graphical representation of variation of axial load on y axis and position of cross section along x axis is called as _____ (a) Bending moment diagram (b) Shear force diagram (c) Stress-strain diagram (d) Trust diagram
Last Answer : (d) Trust diagram
Description : When a section is subjected to two equal and opposite forces tangentially to the section, the stress produced is known as (a) Tensile stress (b) Lateral stress (c) Shear stress (d) No stress
Last Answer : (c) Shear stress
Description : In a simply supported beam loaded with U.D.L over the whole section, the bending stress is …………. at top and ………….. at bottom. (a) Compressive, tensile (b) Tensile, compressive (c) Tensile, zero (d) Compressive, zero
Last Answer : (a) Compressive, tensile
Description : The strength of a beam depends upon (a) Its section modulus (b) Permissible bending stress (c) Both (a) and (b) (d) None of these
Last Answer : (a) Its section modulus
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 : In case of a cantilever beam, shear force at the fixed end will be (a) Maximum (b) Minimum (c) Zero (d) None
Last Answer : (a) Maximum
Description : At the supports of a simply supported beam, shear forces will be (a) Maximum (b) Minimum (c) Zero (d) None
Description : At a point in a simply supported or overhanging beam where Shear force changes sign and = 0, Bending moment is (a) Maximum (b) Zero (c) Either increasing or decreasing (d) Infinity
Description : A cantilever beam of length of 2m carries a U.D.L. of 150 N/m over its whole span. The maximum shear force in the beam will be (a) 150 N (b) 300 N (c) 150 N-m (d) 600 N-m
Last Answer : (b) 300 N
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 : 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
Description : A hollow circular tube with a 2.3-cm I.D. and 2.5-cm O.D. is rigidly supported at its ends. A 2.5 kN-m torque is applied at the center of this tube. What is the maximum shear stress acting on this tube? (a) 2.87Mpa (b) 4.27 Mpa (c) 6.92 Mpa (d) 10.2 Mpa
Last Answer : (a) 2.87Mpa
Description : A circular shaft subjected to torsion undergoes a twist of 10in a length of 120 cm. If the maximum shear stress induced is limited to 1000 kg/cm2and if modulus of rigidity G = 0.8 x 106then the radius of the shaft should be (a) p/8 (b) p/27 (c) 18/p (d) 27/p
Last Answer : (d) 27/p
Description : A solid shaft has diameter 80 mm. It is subjected to a torque of 4 KNm. The maximum shear stress induced in the shaft would be (a) 75/p N/mm2 (b) 250/p N/mm2 (c) 125/p N/mm2 (d) 150/p N/mm2
Last Answer : (c) 125/p N/mm2
Description : Torque and bending moment of 100 kN.m and 200 kN.m acts on a shaft which has external diameter twice of internal diameter. What is the external diameter of the shaft which is subjected to a maximum shear stress of 90 N/mm2? a. 116.5 mm b. 233.025 mm c. 587.1 mm d. 900 mm
Last Answer : c. 587.1 mm
Description : What is the maximum shear stress induced in a solid shaft of 50 mm diameter which is subjected to both bending moment and torque of 300 kN.mm and 200 kN.mm respectively? a. 9.11 N/mm2 b. 14.69 N/mm2 c. 16.22 N/mm2 d. 20.98 N/mm2
Last Answer : b. 14.69 N/mm2
Description : Strength of a shaft a. Is equal to maximum shear stress in the shaft at the time of elastic failure b. Is equal to maximum shear stress in the shaft at the time of rupture c. Is equal to torsional rigidity d. Is ability to resist maximum twisting moment
Last Answer : d. Is ability to resist maximum twisting moment
Description : Which of the following is incorrect? a. In a solid shaft maximum shear stress occurs at radius = radius of shaft b. In a solid shaft maximum shear stress occurs at center c. In a hollow ... maximum shear stress occurs at outer radius d. In a hollow shaft minimum shear stress occurs at inner radius
Last Answer : b. In a solid shaft maximum shear stress occurs at center
Description : Maximum shear stress in a hollow shaft subjected to a torsional moment is at the a. Middle of thickness. b. At the inner surface of the shaft. c. At the outer surface of the shaft. d. At the middle surface of the shaft.
Last Answer : c. At the outer surface of the shaft.
Description : Maximum shear stress of a solid shaft is given by a. 16T/πd b. 16T/πd2 c. 16T/πd3 d. 16T/πd4
Last Answer : c. 16T/πd3
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 square object of 4 mm is subjected to a force of 3000 N. What is the maximum allowable shear stress acting on it? a. 250.14 mm2 b. 281.25 mm2 c. 400.32 mm2 d. 500 mm2
Last Answer : b. 281.25 mm2
Description : A circular pipe is subjected to maximum shear force of 60 kN. What is the diameter of the pipe if maximum allowable shear stress is 5 Mpa? a. 27.311 mm b. 75.56 mm c. 142.72 mm d. 692.10 mm
Last Answer : c. 142.72 mm
Description : A beam of uniform rectangular section 200 mm wide and 300mm deep is simply supported at its ends.It carries a uniformly distributed load of 9KN/m run over the entire span of 5m.If E=1×104 N/mm2, what is the maximum deflection? a.14.26 mm b.17.28 mm c.18.53 mm d.16.27 mm.
Last Answer : d.16.27 mm.
Description : When a simply supported beam is loaded with a point load at the centre, the maximum tensile stress is developed on the (a) Top fibre (b) Bottom fibre (c) Neutral axis (d) None of these
Last Answer : (b) Bottom fibre
Description : Consider the following statements in respect of design of web and flange as splices: 1. Flange splice shall be designed for actual BM at the section. 2. Flange splice shall be designed to resist the actual shear at the section. 3. Web ... are correct? (a) 1 and 3 (b) 2 and 3 (c) 3 and 4 (d)1 and 4
Last Answer : (a) 1 and 3