Springs with rectangular or square cross section used for a. higher stiffness b. larger volume c. larger length d. smaller length

Springs with rectangular or square cross section used for
a. higher stiffness b. larger volume
c. larger length d. smaller length
by

1 Answer

Answer :

b. larger volume
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Related questions

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

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Two concentric springs with stiffness equal to 100 N/mm and 80 N/mm respectively, when subjected to load of 900N will deflect by a. 9mm b. 11.25 mm c. 5mm d. 31.5 mm

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Two close-coiled helical springs are equal in all respects except the number of turns. If the number of turns are in the ratio of 2:3, then the stiffness of the spring will be in the ratio of (a) 2:3 (b) 4:9 (c) 3:2 (d) 9:4

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A close –coiled helical spring is cut into two equal parts. The stiffness of the resulting springs will be (a) same (b) double (c) half (d) One-fourth

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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

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Stiffness of the spring can be increased by a. increase the number of turns b. increase the free length c. decrease the number of turns d. decrease the spring wire diameter

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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 of active coils is 10. If the mean coil diameter is reduced to 10 mm, the stiffness of the spring is approximately a. increased by 8 times b. decreased by 2 times c. increased by 2 times d. decreased by 8 times

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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.

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A simply supported beam is of rectangular section.It carries a uniformly distributed load over the whole span.The deflection at the centre is y.If the depth of beam is doubled ,the deflection at the centre would be a.2y b.4y c.y/2 d.y/8.

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The region of the cross-section of a column in which compressive load may be applied without producing any tensile stress, is known as the core of the cross-section. In circular columns the radius of the core, is (a) One-half of the radius (b) One-third of the radius (c) One-quarter of the radius (d) One-fifth of the radius

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Compression members always tend to buckle in the direction of (a) Vertical axis (b) Horizontal axis (c) Minimum cross-section (d) Least radius of gyration

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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

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Stress in the cross section of a shaft at the centre ________ a. is zero b. decreases linearly to the maximum value of at outer surface c. both a. and b. d. none of the above

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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

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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

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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

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Bending stress will be least at the extreme fibres for (a) Maximum area of cross section (b) Maximum moment of inertia (c) Maximum section modulus (d) None

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For a beam of triangular cross section, the ratio τmax/ τav is (a) 3/2 (b) 4/2 (c) 5/2 (d) None

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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

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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

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Real stress after load application is based on (a) Original area of cross section (b) Changing area of cross section (c) Final area of cross section under maximum load (d) None

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Unit stress after load application is based on (a) Original area of cross section (b) Changing area of cross section (c) Final area of cross section under maximum load (d) None

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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

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The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

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Last Answer : b) Spring stiffness

A spring of stiffness 100 N/mm used in a spring-loaded safety valve of diameter 20 mm on a boiler with the pressure inside the boiler equal to 1 MPa should be initially compressed by a. 5mm b. 3.14 mm c. 2mm d. 6.28 mm

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A spring with 25 active coils cannot be accommodated within a given space. Hence 5 coils of the spring are cut. The stiffness of the new spring will be a. the same b. 1.25 times the original spring c. 0.8 times the original spring d. 20 times the original spring

Description : A spring with 25 active coils cannot be accommodated within a given space. Hence 5 coils of the spring are cut. The stiffness of the new spring will be a. the same b. 1.25 times the original spring c. 0.8 times the original spring d. 20 times the original spring

Last Answer : b. 1.25 times the original spring

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

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Last Answer : (c) Strain energy, deflection and strength

Determine number of coils in a helical compression spring, if modulus of rigidity is 80 Gpa and spring stiffness is 50 N/ mm. Assume wire diameter and spring index as 8 mm and 5 respectively a. 11.8 turns b. 12.8 turns c. 13.3 turns d. None of the above

Description : Determine number of coils in a helical compression spring, if modulus of rigidity is 80 Gpa and spring stiffness is 50 N/ mm. Assume wire diameter and spring index as 8 mm and 5 respectively a. 11.8 turns b. 12.8 turns c. 13.3 turns d. None of the above

Last Answer : b. 12.8 turns

If a close-coiled helical spring absorbs 50 N-mm of energy while extending by 5 mm, its stiffness will be (a) 2 N/mm (b) 4 N/mm (c) 6 N/mm (d) 10 N/mm

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Last Answer : (d) 10 N/mm

A close-coiled helical spring of stiffness 30 N/mm is arranged in series with another such spring of stiffness 60 N/mm. The stiffness of composite unit is (a) 20 N/mm (b) 30 N/mm (c) 45 N/mm (d) 90 N/mm

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Last Answer : (a) 20 N/mm

In the above question, the ratio of stiffness of spring A to spring B is (a) 1/2 (b) 1 (c) 2 (d) 4

Description : In the above question, the ratio of stiffness of spring A to spring B is (a) 1/2 (b) 1 (c) 2 (d) 4

Last Answer : (c) 2

The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

Description : The load required to produce a unit deflection in the spring is called (a) Modulus of Rigidity (b) Spring stiffness (c) Flexural rigidity (d) Tensional rigidity

Last Answer : (b) Spring stiffness

Pure Buckling uses the equation of (a) Rankin-Gordon (b) Euler (c) Stiffness (d) None

Description : Pure Buckling uses the equation of (a) Rankin-Gordon (b) Euler (c) Stiffness (d) None

Last Answer : (b) Euler

The stiffness of solid shaft is---------- than the stiffness of hollow shaft with same weight. a) less b) more c) equal d) not equal

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Last Answer : b) more

A shaft is designed for (a) Strength alone (b) Stiffness alone (c) Both for strength and stiffness (d) None

Description : A shaft is designed for (a) Strength alone (b) Stiffness alone (c) Both for strength and stiffness (d) None

Last Answer : (c) Both for strength and stiffness