Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross- section and highest value of actual stress near discontinuity. a) True b) False

Stress Concentration Factor is the ratio of nominal stress obtained by elementary equations for minimum cross-

section and highest value of actual stress near discontinuity.

a) True

b) False
by

1 Answer

Answer :

b) False
by

Related questions

Stress concentration is defined as the localization of high stresses due to irregularities present in the component and no changes of the cross section. a) True b) False

Description : Stress concentration is defined as the localization of high stresses due to irregularities present in the component and no changes of the cross section. a) True b) False

Last Answer : b) False

Keyed joints never lead to stress concentration on shafts. a) True b) False

Description : Keyed joints never lead to stress concentration on shafts. a) True b) False

Last Answer : b) False

Is it logical to use fluid analogy to understand the phenomenon of stress concentration? a) True b) False

Description : Is it logical to use fluid analogy to understand the phenomenon of stress concentration? a) True b) False

Last Answer : a) True

A fillet weld is an approximately triangular cross section joining two surfaces lying parallels to each other. a) True b) False

Description : A fillet weld is an approximately triangular cross section joining two surfaces lying parallels to each other. a) True b) False

Last Answer : b) False

Nominal diameter of the screw thread is the same as core diameter. a) True b) False

Description : Nominal diameter of the screw thread is the same as core diameter. a) True b) False

Last Answer : b) False

Stress concentration is caused due to A. Variation in properties of material from point to point in a member B. Pitting at points or areas at which loads on a member are applied C. Abrupt change of section D. All of the above

Description : Stress concentration is caused due to A. Variation in properties of material from point to point in a member B. Pitting at points or areas at which loads on a member are applied C. Abrupt change of section D. All of the above

Last Answer : D. All of the above

Transverse fillet weld can be designed using the same equations as of parallel fillet weld. a) True b) False

Description : Transverse fillet weld can be designed using the same equations as of parallel fillet weld. a) True b) False

Last Answer : b) False

Wahl factor to account for direct shear stress and stress concentration due to curvature for helical springs is given by, (A) (4C - 1/4C - 4) + 0.615/C (B) (4C - 1/4C + 4) + 0.615/C (C) (4C + 1/4C - 4) + 0.615/C (D) (4C + 1/4C + 4) + 0.615/C

Description : Wahl factor to account for direct shear stress and stress concentration due to curvature for helical springs is given by, (A) (4C - 1/4C - 4) + 0.615/C (B) (4C - 1/4C + 4) + 0.615/C (C) (4C + 1/4C - 4) + 0.615/C (D) (4C + 1/4C + 4) + 0.615/C

Last Answer : (A) (4C - 1/4C - 4) + 0.615/C

For a helical torsion sprig, the stress concentration factor at outer fibre is? Give spring index=5. a) 0.78 b) 0.87 c) 1.87 d) 0.69

Description : For a helical torsion sprig, the stress concentration factor at outer fibre is? Give spring index=5. a) 0.78 b) 0.87 c) 1.87 d) 0.69

Last Answer : b) 0.87

For a helical torsion sprig, the stress concentration factor at inner fibre is? Give spring index=5. a) 1.005 b) 1.175 c) 1.223 d) 1.545

Description : For a helical torsion sprig, the stress concentration factor at inner fibre is? Give spring index=5. a) 1.005 b) 1.175 c) 1.223 d) 1.545

Last Answer : b) 1.175

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

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

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 )

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 )

In which of the following case stress concentration factor is ignored? a) Ductile material under static load b) Ductile material under fluctuating load c) Brittle material under static load

Description : In which of the following case stress concentration factor is ignored? a) Ductile material under static load b) Ductile material under fluctuating load c) Brittle material under static load

Last Answer : a) Ductile material under static load

For an elliptical hole on a flat plate, if width of the hole in direction of the load decrease, Stress Concentration Factor will______ a) Increase b) Decrease c) Remains constant d) Can’t be determined. Varies from material to material

Description : For an elliptical hole on a flat plate, if width of the hole in direction of the load decrease, Stress Concentration Factor will______ a) Increase b) Decrease c) Remains constant d) Can’t be determined. Varies from material to material

Last Answer : a) Increase

If a flat plate with a circular hole is subjected to tensile force, then its theoretical stress concentration factor is? a) 2 b) 3 c) 4 d) 1

Description : If a flat plate with a circular hole is subjected to tensile force, then its theoretical stress concentration factor is? a) 2 b) 3 c) 4 d) 1

Last Answer : b) 3

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)

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)

For the majority of bearings, actual life is considerably greater than rated life. (a) True (b) False

Description : For the majority of bearings, actual life is considerably greater than rated life. (a) True (b) False

Last Answer : (a) True

For majority of bearings, actual life is considerably greater than rated life. a) True b) False

Description : For majority of bearings, actual life is considerably greater than rated life. a) True b) False

Last Answer : a) True

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

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

The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called (a) repeated stress (b) yield stress (c) fluctuating stress (d) alternating stress

Description : The stress which vary from a minimum value to a maximum value of the same nature (i.e. tensile or compressive) is called (a) repeated stress (b) yield stress (c) fluctuating stress (d) alternating stress

Last Answer : (c) fluctuating stress

Minor principal stress has minimum ________ a. value of shear stress acting on the plane b. intensity of direct stress c. both a. and b. d. none of the above

Description : Minor principal stress has minimum ________ a. value of shear stress acting on the plane b. intensity of direct stress c. both a. and b. d. none of the above

Last Answer : b. intensity of direct stress

Parallel fillet weld and transverse fillet weld both have the plane in which maximum shear stress occurs at 45’ to the leg dimension. a) True b) False

Description : Parallel fillet weld and transverse fillet weld both have the plane in which maximum shear stress occurs at 45’ to the leg dimension. a) True b) False

Last Answer : b) False

In cold riveting like hot riveting shank is subjected to majorly tensile stress. a) True b) False

Description : In cold riveting like hot riveting shank is subjected to majorly tensile stress. a) True b) False

Last Answer : b) False

The hub is treated as a solid shaft while calculating torsional shear stress in the hub. a) True b) False

Description : The hub is treated as a solid shaft while calculating torsional shear stress in the hub. a) True b) False

Last Answer : b) False

The hub is treated as a solid shaft while calculating torsional shear stress in the hub. a) True b) False

Description : The hub is treated as a solid shaft while calculating torsional shear stress in the hub. a) True b) False

Last Answer : b) False

Distortion energy theory is slightly liberal as compared to maximum shear stress theory. a) True b) False

Description : Distortion energy theory is slightly liberal as compared to maximum shear stress theory. a) True b) False

Last Answer : a) True

Maximum Principal Stress Theory is not good for brittle materials. a) True b) False

Description : Maximum Principal Stress Theory is not good for brittle materials. a) True b) False

Last Answer : b) False

The normal stress is perpendicular to the area under considerations, while the shear stress acts over the area. a) True b) False

Description : The normal stress is perpendicular to the area under considerations, while the shear stress acts over the area. a) True b) False

Last Answer : a) True

The dynamic load-carrying capacity of a bearing is defined as the radial load in radial bearings that can be carried for a minimum life of 1000 revolutions. (a) True (b) False

Description : The dynamic load-carrying capacity of a bearing is defined as the radial load in radial bearings that can be carried for a minimum life of 1000 revolutions. (a) True (b) False

Last Answer : (b) False

The dynamic load carrying capacity of a bearing is defined as the radial load in radial bearings that can be carried for a minimum life of 1000 revolutions. a) True b) False

Description : The dynamic load carrying capacity of a bearing is defined as the radial load in radial bearings that can be carried for a minimum life of 1000 revolutions. a) True b) False

Last Answer : b) False

The keyway, (A) Reduces strength of shaft (B) Reduces rigidity of shaft (C) Increases stress concentration (D) All of above

Description : The keyway, (A) Reduces strength of shaft (B) Reduces rigidity of shaft (C) Increases stress concentration (D) All of above

Last Answer : (D) All of above

Which of the following reduces the stress concentration? a) Use of multiple notches b) Drilling additional holes c) Removal of undesired material d) Each of the mentioned

Description : Which of the following reduces the stress concentration? a) Use of multiple notches b) Drilling additional holes c) Removal of undesired material d) Each of the mentioned

Last Answer : d) Each of the mentioned

Use of multiple notches in a V shaped flat plate will a) Reduce the stress concentration b) Increase the stress concentration c) No effect d) Cannot be determined

Description : Use of multiple notches in a V shaped flat plate will a) Reduce the stress concentration b) Increase the stress concentration c) No effect d) Cannot be determined

Last Answer : a) Reduce the stress concentration

The cross section of flywheel arm is 1. I section 2. Rectangular 3. Elliptical 4. Circular

Description : The cross section of flywheel arm is 1. I section 2. Rectangular 3. Elliptical 4. Circular

Last Answer : 3. Elliptical

The cross-section of the flywheel arm is, (A) I section (B) Rectangular (C) Elliptical (D) Circular

Description : The cross-section of the flywheel arm is, (A) I section (B) Rectangular (C) Elliptical (D) Circular

Last Answer : (C) Elliptical

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

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

Martin’s factor compensates for curvature effect in springs. a) True b) False

Description : Martin’s factor compensates for curvature effect in springs. a) True b) False

Last Answer : b) False

If core diameter of bolt is 13.8cm the it’s nominal diameter is given by? a) 17.27mm b) 15.34mm c) 14.67mm d) 16.34mm

Description : If core diameter of bolt is 13.8cm the it’s nominal diameter is given by? a) 17.27mm b) 15.34mm c) 14.67mm d) 16.34mm

Last Answer : a) 17.27mm

What is the approximate nominal diameter for coarse threads? a. d = 1.136 dc b. d = 1.59 dc c. d = 1.19 dc d. d = 0.5 dc

Description : What is the approximate nominal diameter for coarse threads? a. d = 1.136 dc b. d = 1.59 dc c. d = 1.19 dc d. d = 0.5 dc

Last Answer : c. d = 1.19 dc

The spring index is the ratio of wire diameter to mean coil diameter. a) True b) False

Description : The spring index is the ratio of wire diameter to mean coil diameter. a) True b) False

Last Answer : a) True

Principal planes are those planes on which a. Normal stress is maximum b. Normal stress is minimum c. Normal stress is either maximum or minimum d. Shear stress is maximum

Description : Principal planes are those planes on which a. Normal stress is maximum b. Normal stress is minimum c. Normal stress is either maximum or minimum d. Shear stress is maximum

Last Answer : c. Normal stress is either maximum or minimum

In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2 , nominal reinforcement is provided at a pitch of (A) One-half lever arm of the section (B) One-third lever arm of the section (C) Lever arm of the section (D) One and half lever arm of the section

Description : In the zone of R.C.C. beam where shear stress is less than 5 kg/cm2 , nominal reinforcement is provided at a pitch of (A) One-half lever arm of the section (B) One-third lever arm of the section (C) Lever arm of the section (D) One and half lever arm of the section

Last Answer : Answer: Option C

The connecting rod bolts are tightened up so that the initial tightening stress (A) Approaches yield point (B) Approaches endurance limit (C) Approaches (yield point stress/factor of safety) (D) Approaches (endurance limit stress/factor of safety)

Description : The connecting rod bolts are tightened up so that the initial tightening stress (A) Approaches yield point (B) Approaches endurance limit (C) Approaches (yield point stress/factor of safety) (D) Approaches (endurance limit stress/factor of safety)

Last Answer : (A) Approaches yield point

Which of the following equations is correct for Soderberg Criteria? a. (σ m / S ut ) + (σ a / S e ) = (1 / N f ) b. (σ m / S ut ) - (σ a / S e ) = (1 / N f ) c. (σ m / S yt ) + (σ a / S e ) = (1 / N f ) d. (σ m / S ut ) - (σ a / S e ) = (1 / N f )

Description : Which of the following equations is correct for Soderberg Criteria? a. (σ m / S ut ) + (σ a / S e ) = (1 / N f ) b. (σ m / S ut ) - (σ a / S e ) = (1 / N f ) c. (σ m / S yt ) + (σ a / S e ) = (1 / N f ) d. (σ m / S ut ) - (σ a / S e ) = (1 / N f )

Last Answer : c. (σ m / S yt ) + (σ a / S e ) = (1 / N f )

The equations for principal stresses are valid only when (a)σ x and σ y are both tensile (b) σ x is compressive and σ y is tensile (c) σ x is tensile and σ y is compressive (d) None

Description : The equations for principal stresses are valid only when (a)σ x and σ y are both tensile (b) σ x is compressive and σ y is tensile (c) σ x is tensile and σ y is compressive (d) None

Last Answer : (a)σ x and σ y are both tensile

is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is (A) f = (P/A) - (Z/M) (B) f = (A/P) - (M/Z) (C) f = (P/A) - (M/Z) (D) f = (P/A) - (M/6Z)

Description : is the pre-stressed force applied to tendon of a rectangular pre-stressed beam whose area of cross section is and sectional modulus is . The minimum stress on the beam subjected to a maximum bending moment is (A) f = (P/A) - (Z/M) (B) f = (A/P) - (M/Z) (C) f = (P/A) - (M/Z) (D) f = (P/A) - (M/6Z)

Last Answer : Answer: Option C

The spring index is, (A) Ratio of wire diameter to mean coil diameter (B) Force per unit cross-sectional area of spring (C) Ratio of mean coil diameter to wire diameter (D) Force required to produce unit deflection

Description : The spring index is, (A) Ratio of wire diameter to mean coil diameter (B) Force per unit cross-sectional area of spring (C) Ratio of mean coil diameter to wire diameter (D) Force required to produce unit deflection

Last Answer : (C) Ratio of mean coil diameter to wire diameter

The stiffness of spring is, (A) Deflection per unit of axial force (B) Force per unit cross-sectional area of spring (C) Ratio of mean coil diameter to wire diameter (D) Force required to produce unit deflection

Description : The stiffness of spring is, (A) Deflection per unit of axial force (B) Force per unit cross-sectional area of spring (C) Ratio of mean coil diameter to wire diameter (D) Force required to produce unit deflection

Last Answer : (D) Force required to produce unit deflection

When the nominal shear stress is less than permissible shear stress in concrete then [ A ] Provide minimum shear reinforcement [ B ] No shear reinforcement is necessary [ C ] Provide design shear reinforcement [ D ] None of the above

Description : When the nominal shear stress is less than permissible shear stress in concrete then [ A ] Provide minimum shear reinforcement [ B ] No shear reinforcement is necessary [ C ] Provide design shear reinforcement [ D ] None of the above

Last Answer : [ A ] Provide minimum shear reinforcement

Where the asset is received as gift then cost of the asset will be a) Actual cost to previous owner b) Nominal Value c) WDV on date of receipt of gift d) None of the above

Description : Where the asset is received as gift then cost of the asset will be a) Actual cost to previous owner b) Nominal Value c) WDV on date of receipt of gift d) None of the above

Last Answer : c) WDV on date of receipt of gift