The strain energy stored in a spiral spring is given by? a) 12M2L/Ebtɜ b) 6M2L/Ebtɜ c) 8M2L/Ebtɜ d) None of the listed

The strain energy stored in a spiral spring is given by?

a) 12M2L/Ebtɜ

b) 6M2L/Ebtɜ

c) 8M2L/Ebtɜ

d) None of the listed
by

1 Answer

Answer :

b) 6M2L/Ebtɜ
by

Related questions

The strain energy stored in a spiral spring is given by? (a) 12M²L/Ebtᵌ (b) 6M²L/Ebtᵌ (c) 8M²L/Ebtᵌ (d) None of the listed

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Last Answer : (b) 6M²L/Ebtᵌ

Angle of rotation o arbour with respect to drum is given by? a) None of the listed b) 12ML/Ebtɜ c) 8 ML/Ebtɜ d) 16ML/Ebtɜ

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The strain energy (E) stored in the spring is given by Where P=Load and δ = deflection of spring (A) Pδ/2 (B) 2Pδ (C) Pδ/3 (D) Pδ/4

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The type of spring used to achieve greater load carrying capacity within given space is (A) Spiral spring (B) Springs in series (C) Multi-leaf spring (D) Concentric springs

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The type of spring used to absorb and release energy in mechanical watches is (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring (D) Helical torsion spring

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The type of spring used to measure weights in spring balance is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring

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The type of spring used in door hinges is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring (D) Helical torsion spring

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The type of spring used to absorb shocks and vibrations in vehicles is, (A) Helical extension spring (B) Multi-leaf spring (C) Spiral spring (D) Belleville (coned disk) spring

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The type of spring used to achieve any linear or non-linear load-deflection characteristic is (A) Spiral spring (B) Non-ferrous spring (C) Belleville (coned disk) spring (D) Torsion spring

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The strip of spiral spring is never subjected to pure bending moment. a) True b) False

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Spiral spring is quite rigid. a) Yes b) No it is flexible c) It is of moderate rigidity d) Rigidity can’t be determined

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If number of coils are 8 and wire diameter of spring 3mm, then solid length is given by? a) None of the listed b) 27mm c) 24mm d) 21mm

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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

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The longest leaf in a leaf spring is called centre leaf. a) It is called middle leaf b) It is called master leaf c) Yes d) None of the listed

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The helix angle is very small about 20. The spring is open coiled spring. a) Yes b) It is closed coiled spring c) That small angle isn’t possible d) None of the listed

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The total strain energy for a unit cube subjected to three principal stresses is given by? a) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/3 b) U= [(σ12+σ22+σ32)/2E] – (σ1σ2+σ2σ3+σ3σ1)2μ c) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/4 d) None of the mentioned

Description : The total strain energy for a unit cube subjected to three principal stresses is given by? a) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/3 b) U= [(σ12+σ22+σ32)/2E] – (σ1σ2+σ2σ3+σ3σ1)2μ c) U= [(σέ) 1 + (σέ) 2+ (σέ) 3]/4 d) None of the mentioned

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The strain energy stored in a spring when subjected to greatest load without being permanently distorted, is called (A) Stiffness (B) Proof resilience (C) Proof stress (D) Proof load

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If a circular shaft is welded to the plate by means of circumferential fillet, then the shaft is subjected to torsional moment M. If throat of weld is t, then torsional shear stress is given by a) M/2πtr2 b) M/πtr2 c) M/4πtr2 d) None of the listed

Description : If a circular shaft is welded to the plate by means of circumferential fillet, then the shaft is subjected to torsional moment M. If throat of weld is t, then torsional shear stress is given by a) M/2πtr2 b) M/πtr2 c) M/4πtr2 d) None of the listed

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Find the bending stress in the top weld is if thickness of weld is t. Given P=15kN and e=120mm. a) 230/t b) 360/t c) 200/t d) None of the listed

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A bracket is shown welded to a vertical column by means of two fillet welds. The bending stress induced in the welds can be given by a) My/I b) 2My/I c) My/2I d) None of the listed

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If length of weld is l and leg h, then area of throat can be given by a) 0.707 hl b) 1.414hl c) hl d) None of the listed

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When the shaft is subjected to pure torsional moment, the torsional stress is given by? a) None of the listed b) 32M/πdɜ c) 16M/πdɜ d) 8M/πdɜ

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When the shaft is subjected to pure bending moment, the bending stress is given by? a) None of the listed b) 32M/πdɜ c) 16M/πdɜ d) 8M/πdɜ

Description : When the shaft is subjected to pure bending moment, the bending stress is given by? a) None of the listed b) 32M/πdɜ c) 16M/πdɜ d) 8M/πdɜ

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When the shaft is subjected to pure torsional moment, the torsional stress is given by? a) None of the listed b) 32M/πdɜ c) 16M/πdɜ d) 8M/πdɜ

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When the shaft is subjected to pure bending moment, the bending stress is given by? a) None of the listed b) 32M/πdɜ c) 16M/πdɜ d) 8M/πdɜ

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Modulus of resilience is defined as a) Strain energy per unit volume b) Strain energy per unit area c) Independent of strain energy d) None of the mentioned

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If the length of the shank is doubled, then strain energy absorbed by shank a) Doubles b) Remains same c) Increases 4 time d) Become half

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For a homogeneous & isotropic body under hydrostatic pressure, which theory of elastic failure fails (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal strain Theory (c) Thirdly Maximum Principal Energy Theory (d) None

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Under complex or simple loading, strain energy is (a) External work done (b) Internal work done (c) Both internal and external work (d) None

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Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum Principal stress theory (d) None

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Under complex loading, if elastic limit reaches in tension, then failure occurs due to (a) Firstly Maximum principal strain theory (b) Secondly Maximum principal theory of strain energy (c) Thirdly Maximum shear stress theory (d) None

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A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Shear Stress Theory (b) Secondly Maximum Shear Strain Energy Theory (c) Both (a) & (b) (d) None

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A ductile material may not meet a failure if it has been tested for the theories of failure (a) Firstly Maximum Principal Theory (b) Secondly Maximum Principal Strain Theory (c) Thirdly Maximum principal strain energy theory (d) None

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Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

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Shear strain energy theory is also known as (a) Coulomb’s theory (b) Distortion energy theory (c) Rankine theory (d) None

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Shear strain energy theory is also known as (a) Von Mises Theory (b) Coulomb’s theory (c) Rankine theory (d) None

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Shear strain energy theory is also known as ( a) Huber theory (b) Rankine theory (c) Mises-Hencky theory (d) None

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Maximum total strain energy theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

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Maximum total strain energy is equal to (a) (σ1 2 +σ2 2 )/2E (b) ( σ1 2 +σ2 2 + 2μ σ1 σ2)/2E (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E (d) None

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Last Answer : (c) ( σ1 2 +σ2 2 — 2μ σ1 σ2)/2E

Maximum total strain energy theory is also known as (a) Huber theory (b) Rankine theory (c) St.Venant’s theory (d) None

Description : Maximum total strain energy theory is also known as (a) Huber theory (b) Rankine theory (c) St.Venant’s theory (d) None

Last Answer : (a) Huber theory

Maximum total strain energy theory is also known as (a) Guest’s theory (b) Haigh theory (c) St.Venant’s theory (d) None

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Shear strain energy under principal tensile stresses σ1 and σ2 is (a) (1/12E) (σ1 — σ2) 2 + σ2 2 — σ1 2 ) (b) (1/12G) (σ1 — σ2) 2 + σ2 2 + σ1 2 ) (c) (1/12K) (σ1 — σ2) 2 + σ2 2 + σ1 2 ) (d) None

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Last Answer : (b) (1/12G) (σ1 — σ2) 2 + σ2 2 + σ1 2 )

Which of the following are functions of flywheel? a) Store and release energy during work cycle b) Reduce power capacity of the electric motor c) Reduce amplitude of speed fluctuations d) All of the listed

Description : Which of the following are functions of flywheel? a) Store and release energy during work cycle b) Reduce power capacity of the electric motor c) Reduce amplitude of speed fluctuations d) All of the listed

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Resilience is defined as the property of material to absorb energy when deformed _________ and to release this energy when unloaded. a) Elastically b) Plastically c) Up to fracture point d) None of the listed

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Description : Energy stored in flywheel in the form of 1. heat energy 2. kinetic energy 3. solar energy 4. thermal energy

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Energy is stored in a flywheel in the form of (A) Heat energy (B) Solar energy (C) Kinetic energy (D) Potential energy

Description : Energy is stored in a flywheel in the form of (A) Heat energy (B) Solar energy (C) Kinetic energy (D) Potential energy

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Maximum principal strain is equal to when σ1 and σ2 are tensile (a) (σ1 –μσ2)/E (b) (σ1 + μσ2)/E (c) (–σ1 –μσ2)/E (d) None

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Maximum principal strain theory is also called as (a) Guest’s theory (b) Haigh theory (c) St.Venant’s theory (d) None

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Maximum principal strain theory is applicable to (a) Ductile materials (b) Brittle materials (c) Composite materials (d) None

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Last Answer : (b) Brittle materials

In Mohr’s circle of strain, y-axis represents a. Shear strain b. Half of shear strain c. Normal strain d. Half of normal strain

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Last Answer : b. Half of shear strain