Which one of the following statements is true for Mohr-Coulomb envelope? (A) Coulomb suggests that the relationship between shear strength and normal stress, is adequately represented by the straight line (B) The generalised Mohr theory suggests that, though the shear stress depends on the normal stress, the relation is not linear (C) Coulomb and Mohr suggest that a definite relationship exists among the principal stress and the angle of internal friction (D) All the above

Which one of the following statements is true for Mohr-Coulomb envelope?
(A) Coulomb suggests that the relationship between shear strength and normal stress, is
adequately represented by the straight line
(B) The generalised Mohr theory suggests that, though the shear stress depends on the normal
stress, the relation is not linear
(C) Coulomb and Mohr suggest that a definite relationship exists among the principal stress and
the angle of internal friction
(D) All the above
by

1 Answer

Answer :

Answer: Option D
by

Related questions

The shear strength of a soil (A) Is directly proportional to the angle of internal friction of the soil (B) Is inversely proportional to the angle of internal friction of the soil (C) Decreases with increase in normal stress (D) Decreases with decrease in normal stress

Description : The shear strength of a soil (A) Is directly proportional to the angle of internal friction of the soil (B) Is inversely proportional to the angle of internal friction of the soil (C) Decreases with increase in normal stress (D) Decreases with decrease in normal stress

Last Answer : Answer: Option D

Which of the following is not depends on shear strength of the material? (A) Cohesion (B) Internal friction (C) Normal stress (D) Mass of the material

Description : Which of the following is not depends on shear strength of the material? (A) Cohesion (B) Internal friction (C) Normal stress (D) Mass of the material

Last Answer : (D) Mass of the material 

The Mohr's straight theory is based on the following fact: (A) Material fails essentially by shear (B) Ultimate strength of the material is determined by the stress in the plane of slip (C) Failure criterion is independent of the intermediate principal stress (D) All the above

Description : The Mohr's straight theory is based on the following fact: (A) Material fails essentially by shear (B) Ultimate strength of the material is determined by the stress in the plane of slip (C) Failure criterion is independent of the intermediate principal stress (D) All the above

Last Answer : Answer: Option D

Consider the following statements: For pure clay, the shear strength parameters will be 1. Cohesion c = 0; and angle of internal friction  will be maximum. 2. Cohesion c is maximum; and angle of internal friction  is also maximum. 3. Angle of internal friction  is zero, with some value of cohesion c. Which of these statements is/are correct? (a) 1, 2 & 3 (b) 1 only (c) 3 only (d) 2 only

Description : Consider the following statements: For pure clay, the shear strength parameters will be 1. Cohesion c = 0; and angle of internal friction  will be maximum. 2. Cohesion c is maximum; and angle of internal friction  is also maximum. ... is/are correct? (a) 1, 2 & 3 (b) 1 only (c) 3 only (d) 2 only

Last Answer : (c) 3 only

Explain with sketch Mohr-Coulomb failure theory.

Description : Explain with sketch Mohr-Coulomb failure theory.

Last Answer : Mohr presented a theory for rupture in materials. The failure along a plane in a material occurs by a critical combination of normal and shear stresses, and not by normal or shear stress alone. The ... to the Mohr circles can be drawn, and is called the Mohr-Coulomb failure envelope. 

Depending upon the properties of a material, the failure envelope may (A) Be either straight or curved (B) Pass through the origin of stress (C) Intersect the shear stress axis (D) All the above

Description : Depending upon the properties of a material, the failure envelope may (A) Be either straight or curved (B) Pass through the origin of stress (C) Intersect the shear stress axis (D) All the above

Last Answer : (D) All the above

The angle that Coulomb's failure envelope makes with the horizontal is called (A) Cohesion (B) Angle of internal friction (C) Angle of repose (D) None of the above

Description : The angle that Coulomb's failure envelope makes with the horizontal is called (A) Cohesion (B) Angle of internal friction (C) Angle of repose (D) None of the above

Last Answer : Answer: Option A

The equation = C + is given by (A) Rankine (B) Coulomb (C) Coleman (D) Mohr

Description : The equation = C + is given by (A) Rankine (B) Coulomb (C) Coleman (D) Mohr

Last Answer : (B) Coulomb

Which of the following statements is/are true for coulomb damping? 1. Coulomb damping occurs due to friction between two lubricated surfaces2. Damping force is opposite to the direction of motion of vibrating body 3. For smooth surfaces, coefficient of friction depends upon velocity 4. Damping force depends upon the rubbing velocity between two rubbing surfaces a. Only statement 1 b. Statement 2, 3 and statement 4 c. Only statement 2 d. All the above statements are true

Description : Which of the following statements is/are true for coulomb damping? 1. Coulomb damping occurs due to friction between two lubricated surfaces2. Damping force is opposite to the direction of motion of vibrating body ... 2, 3 and statement 4 c. Only statement 2 d. All the above statements are true

Last Answer : c. Only statement 2

For a certain set of external loads, concordant profile in a prestressed beam represents to some scale the (a) Influence line diagram (b) Shear force diagram (c) Bending moment diagram (d) Williot-Mohr diagram

Description : For a certain set of external loads, concordant profile in a prestressed beam represents to some scale the (a) Influence line diagram (b) Shear force diagram (c) Bending moment diagram (d) Williot-Mohr diagram

Last Answer : (c) Bending moment diagram

The shear strength in plastic undrained clay, is due to (A) Inter-granular friction (B) Internal friction (C) Cohesion (D) None of these

Description : The shear strength in plastic undrained clay, is due to (A) Inter-granular friction (B) Internal friction (C) Cohesion (D) None of these

Last Answer : (C) Cohesion

Which of the following theories of failure is most appropriate for a brittle material? (a) Maximum principal strain theory (b) Maximum principal stress theory (c) Maximum shear stress theory (d) Maximum strain energy theory

Description : Which of the following theories of failure is most appropriate for a brittle material? (a) Maximum principal strain theory (b) Maximum principal stress theory (c) Maximum shear stress theory (d) Maximum strain energy theory

Last Answer : (b) Maximum principal stress theory

Through a point in a loaded soil mass, there exists typical planes mutually orthogonal on which the stress is wholly normal and no shear stress acts, if is (A) 1 (B) 2 (C) 3 (D) 4

Description : Through a point in a loaded soil mass, there exists typical planes mutually orthogonal on which the stress is wholly normal and no shear stress acts, if is (A) 1 (B) 2 (C) 3 (D) 4

Last Answer : Answer: Option C

Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Description : Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Last Answer : b) Distortion energy theory

Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Description : Among maximum shear stress theory and distortion energy theory, which gives the higher value shear yield strength? a) Maximum shear stress theory b) Distortion energy theory c) Both give equal values d) Vary from material to material

Last Answer : b) Distortion energy theory

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

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

In a static fluid (A) Resistance to shear stress is small (B) Fluid pressure is zero (C) Linear deformation is small (D) Only normal stresses can exist

Description : In a static fluid (A) Resistance to shear stress is small (B) Fluid pressure is zero (C) Linear deformation is small (D) Only normal stresses can exist

Last Answer : Answer: Option D

A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m² when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of internal friction for the soil are respectively (A) 0.5 N/mm² and 30° (B) 0.05 N/mm² and 0° (C) 0.2 N/mm² and 0° (D) 0.05 N/mm² and 45°

Description : A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m² when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of ... N/mm² and 0° (C) 0.2 N/mm² and 0° (D) 0.05 N/mm² and 45°

Last Answer : Answer: Option B

A thin spherical shell under internal pressure will fail under a. Maximum shear stress b. Principal compressive stress c. Principal tensile stress d. None

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

A transmission shaft subjected to pure bending moment should be designed on the basis of (A) Maximum principal stress theory (B) Maximum shear stress theory (C) Distortion energy theory (D) Goodman or Soderberg diagrams

Description : A transmission shaft subjected to pure bending moment should be designed on the basis of (A) Maximum principal stress theory (B) Maximum shear stress theory (C) Distortion energy theory (D) Goodman or Soderberg diagrams

Last Answer : (A) Maximum principal stress theory

For a homogeneous & isotropic body under hydrostatic pressure, which theory of elastic failure does not fail (a) Firstly Maximum Principal Theory (b) Secondly Maximum Shear Stress Theory (c) Thirdly Maximum Principal Energy Theory (d) None

Description : For a homogeneous & isotropic body under hydrostatic pressure, which theory of elastic failure does not fail (a) Firstly Maximum Principal Theory (b) Secondly Maximum Shear Stress Theory (c) Thirdly Maximum Principal Energy Theory (d) None

Last Answer : (a) Firstly Maximum Principal Theory

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

Description : 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

Last Answer : (d) None

Under maximum principal stress theory, maximum principal stress is equal to (a) Allowable stress in tension (b) Allowable stress in compression (c) Allowable stress in shear (d) None

Description : Under maximum principal stress theory, maximum principal stress is equal to (a) Allowable stress in tension (b) Allowable stress in compression (c) Allowable stress in shear (d) None

Last Answer : (a) Allowable stress in tension

The shear stress-strain graph for a Newtonian fluid is a (A) Straight line (B) Parabolic curve (C) Hyperbolic curve (D) Elliptical

Description : The shear stress-strain graph for a Newtonian fluid is a (A) Straight line (B) Parabolic curve (C) Hyperbolic curve (D) Elliptical

Last Answer : Answer: Option A

In a reinforced concrete beam , the shear stress distribution above the neutral axis following a (a) A straight line (b) Circular curve (c) Parabolic curve (d) All the above

Description : In a reinforced concrete beam , the shear stress distribution above the neutral axis following a (a) A straight line (b) Circular curve (c) Parabolic curve (d) All the above

Last Answer : (c) Parabolic curve

The shear strength of a soil (A) Increases with an increase in the normal stress (B) Is proportional to the cohesion of the soil (C) Is generally known as the strength of the soil (D) All the above

Description : The shear strength of a soil (A) Increases with an increase in the normal stress (B) Is proportional to the cohesion of the soil (C) Is generally known as the strength of the soil (D) All the above

Last Answer : (D) All the above

. A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid. (A) Newtonian (B) Non-Newtonian (C) Ideal (D) Incompressible

Description : . A fluid which has a linear relationship between the magnitude of applied shear-stress and the resulting rate of deformation is called a/an __________ fluid. (A) Newtonian (B) Non-Newtonian (C) Ideal (D) Incompressible

Last Answer : (A) Newtonian

A typical objective of an operational audit is to determine whether an entity's a. Internal control structure is adequately operating as designed b. Operational information is in accordance with generally accepted accounting principles. c. Specific operating units are functioning efficiently and effectively d. Financial statements present fairly the results of operations

Description : A typical objective of an operational audit is to determine whether an entity's a. Internal control structure is adequately operating as designed b. Operational information is in ... are functioning efficiently and effectively d. Financial statements present fairly the results of operations

Last Answer : Specific operating units are functioning efficiently and effectively

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

A principal stress is a a. Shear stress with zero normal stress b. Normal stress with zero shear stress c. Both (a) & (b) d. None

Description : A principal stress is a a. Shear stress with zero normal stress b. Normal stress with zero shear stress c. Both (a) & (b) d. None

Last Answer : b. Normal stress with zero shear stress

A principal plane is a plane of (a) Only normal stress (b) Only shear stress (c) Only bending stress (d) None

Description : A principal plane is a plane of (a) Only normal stress (b) Only shear stress (c) Only bending stress (d) None

Last Answer : (a) Only normal stress

Principal stress is the magnitude of ________ stress acting on the principal plane. a. Normal stress b. Shear stress c. Both a. and b. d. None of the above

Description : Principal stress is the magnitude of ________ stress acting on the principal plane. a. Normal stress b. Shear stress c. Both a. and b. d. None of the above

Last Answer : a. Normal stress

(A) The nucleus of gold is stable even though there is a very strong coulombic repulsion among the protons. (R ) The inverse square coulomb force is e

Description : (A) The nucleus of gold is stable even though there is a very strong coulombic repulsion among the protons. (R ) The inverse square coulomb force is e

Last Answer : (A) The nucleus of gold is stable even though there is a very strong coulombic repulsion among the protons. ... . If both (A) and (R ) are incorrect.

A 55-year-old renal transplant patient has been hospitalized in a Surgical Intensive Care Unit, receiving a prolonged course of antibiotics following an attack of acute cholecystitis. The following statement(s) is/are true concerning his management. a. Due to the potential risk of Candida infection, prophylaxis with oral nystatin should be instituted early in the patient’s course b. A Candida urinary tract infection should be treated with systemic amphotericin B c. Changes of Candida retinitis are of little significance d. The presence of a virulent Candida bacteremia should suggest a dosage reduction in immunosuppressive agents until the infection can be adequately controlled

Description : A 55-year-old renal transplant patient has been hospitalized in a Surgical Intensive Care Unit, receiving a prolonged course of antibiotics following an attack of acute cholecystitis. The ... suggest a dosage reduction in immunosuppressive agents until the infection can be adequately controlled

Last Answer : Answer: a, d Infections due to fungal pathogens have become increasingly common during the past decade, frequently occurring in patients undergoing prolonged hospitalization in the Surgical ... agents should be discontinued until evidence of infection is absolutely controlled or is eradicated

In a shell and tube heat exchanger, (A) The temperature drops in the two fluids and the wall are proportional to individual resistances (B) The temperature drop is inversely proportional to the resistance across which the drop occurs (C) There is no relationship between temperature drop and resistance (D) The relationship is not generalised

Description : In a shell and tube heat exchanger, (A) The temperature drops in the two fluids and the wall are proportional to individual resistances (B) The temperature drop is inversely proportional to ... ) There is no relationship between temperature drop and resistance (D) The relationship is not generalised

Last Answer : (A) The temperature drops in the two fluids and the wall are proportional to individual resistances

. In case of turbulent flow of fluid through a circular pipe, the (A) Mean flow velocity is about 0.5 times the maximum velocity (B) Velocity profile becomes flatter and flatter with increasing Reynolds number (C) Point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius) (D) Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more

Description : . In case of turbulent flow of fluid through a circular pipe, the (A) Mean flow velocity is about 0.5 times the maximum velocity (B) Velocity profile becomes flatter and flatter with ... , shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more

Last Answer : (D) Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more

Pick up the correct statement from the following: (A) The bending stress in a section is zero at its neutral axis and maximum at the outer fibres (B) The shear stress is zero at the outer fibres and maximum at the neutral axis (C) The bending stress at the outer fibres, is known as principal stress (D) All the above

Description : Pick up the correct statement from the following:  (A) The bending stress in a section is zero at its neutral axis and maximum at the outer fibres  (B) The shear stress is zero at the outer ... (C) The bending stress at the outer fibres, is known as principal stress  (D) All the above 

Last Answer : (D) All the above 

Along the principal plan subjected to maximum principal stress (A) Maximum shear stress acts (B) Minimum shear stress acts(C) No shear stress acts (D) None of these

Description : Along the principal plan subjected to maximum principal stress (A) Maximum shear stress acts (B) Minimum shear stress acts (C) No shear stress acts (D) None of these

Last Answer : (C) No shear stress acts

The principal stresses at a point are 100, 100 and -200 kgf/cm2 , the octahedral shear stress at the point is: (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2(D) 400 kg/cm2

Description : The principal stresses at a point are 100, 100 and -200 kgf/cm2 , the octahedral shear stress at the  point is:  (A) 100 kg/cm2 (B) 200 kg/cm2 (C) 300 kg/cm2 (D) 400 kg/cm2

Last Answer : (A) 100 kg/cm2

Pick up the correct statement from the following: (A) An unconfined compression test is a special case of triaxial compression test (B) An unconfined compression test is a special case of direct shear test (C) The confining pressure is maximum during an unconfined compression test (D) The cylindrical specimen of a soil is subjected to major principal stress till it fails due to shearing along the plane of the failure

Description : Pick up the correct statement from the following: (A) An unconfined compression test is a special case of triaxial compression test (B) An unconfined compression test is a special case of direct ... subjected to major principal stress till it fails due to shearing along the plane of the failure

Last Answer : Option A

Presence of tail water in a gravity dam (i) Increases the principal stress (ii) Decreases the principal stress (iii) Increases the shear stress (iv) Decreases the shear stress The correct answer isA) (i) and (iii) (B) (i) and (iv) (C) (ii) and (iii) (D) (ii) and (iv)

Description : Presence of tail water in a gravity dam (i) Increases the principal stress (ii) Decreases the principal stress (iii) Increases the shear stress (iv) Decreases the shear stress The correct answer is A) (i) and (iii) (B) (i) and (iv) (C) (ii) and (iii) (D) (ii) and (iv)

Last Answer : Answer: Option D

The angle of contact in case of a liquid depends upon (A) The nature of the liquid and the solid (B) The material which exists above the free surface of the liquid (C) Both of die above (D) Any one of the above

Description : The angle of contact in case of a liquid depends upon (A) The nature of the liquid and the solid (B) The material which exists above the free surface of the liquid (C) Both of die above (D) Any one of the above

Last Answer : Answer: Option C

Coulomb friction is the friction between (A) Bodies having relative motion (B) Two dry surfaces (C) Two lubricated surfaces (D) Solids and liquids

Description : Coulomb friction is the friction between  (A) Bodies having relative motion  (B) Two dry surfaces  (C) Two lubricated surfaces  (D) Solids and liquids 

Last Answer : (A) Bodies having relative motion 

The stress-strain relation of the Newtonian fluid is (A) Linear (B) Parabolic (C) Hyperbolic (D) Inverse type

Description : The stress-strain relation of the Newtonian fluid is (A) Linear (B) Parabolic (C) Hyperbolic (D) Inverse type

Last Answer : Answer: Option A

In a R.C section under flexure, the assumption that “a plane section before bending remains plane after bending” leads to (a) Strain distribution being linear across the depth (b) Stress distribution being linear across the depth (c) Both stress and strain distribution being linear across the depth (d) Shear stress distribution being uniform along the depth

Description : In a R.C section under flexure, the assumption that a plane section before bending remains plane after bending leads to (a) Strain distribution being linear across the depth (b) ... strain distribution being linear across the depth (d) Shear stress distribution being uniform along the depth

Last Answer : (a) Strain distribution being linear across the depth

The coefficient of friction depends on (A) Area of contact (B) Shape of surfaces (C) Strength of surfaces (D) Nature of surface

Description : The coefficient of friction depends on (A) Area of contact (B) Shape of surfaces (C) Strength of surfaces (D) Nature of surface

Last Answer : (D) Nature of surface

Maximum principal theory is also known as (a) Beltrami Theory (b) Maximum normal stress theory (c) Saint Venant’s theory (d) None

Description : Maximum principal theory is also known as (a) Beltrami Theory (b) Maximum normal stress theory (c) Saint Venant’s theory (d) None

Last Answer : (b) Maximum normal stress theory

Mohr’s stress circle is named so because it has equation of the form a. x^2 + y^2 = r^2 b. (x-a)^2 + y^2 = r^2 c. (x-a)^2 + (y-b)^2 = r^2 d. It was desired by German Engineer Otto Mohr

Description : Mohr’s stress circle is named so because it has equation of the form a. x^2 + y^2 = r^2 b. (x-a)^2 + y^2 = r^2 c. (x-a)^2 + (y-b)^2 = r^2 d. It was desired by German Engineer Otto Mohr

Last Answer : b. (x-a)^2 + y^2 = r^2