**Description :** Angle of friction and angle of repose are (1) Equal to each other (2) Not equal to each other (3) Proportional to each other (4) None of the above

**Last Answer :** (1) Equal to each other Explanation: The angle of repose or the critical angle of repose, of a granular material is the steepest angle of descent or dip of the slope relative to the horizontal ... the density, surface area and shapes of the particles, and the coefficient of friction of the material.

**Description :** Which one of the following statements is not correct? (A) The tangent of the angle of friction is equal to coefficient of friction (B) The angle of repose is equal to angle of ... coefficient of friction (D) The sine of the angle of repose is equal to coefficient to friction

**Last Answer :** (D) The sine of the angle of repose is equal to coefficient to friction

**Description :** Tangent of angle of friction is equal to (A) Kinetic friction (B) Limiting friction (C) Angle of repose (D) Coefficient of friction

**Last Answer :** (D) Coefficient of friction

**Description :** The slope on the road generally provided on the curves is known as a.Angle of repose b.Angle of friction c.Angle of banking d.Angle of reaction e.None of the above

**Last Answer :** c. Angle of banking

**Description :** The angle which an inclined surface makes with the horizontal when a body placed on it is on the point moving down is known as a.Angle of friction b.Angle of limiting friction c.Angle of inclination d.Angle of repose e.None of the above

**Last Answer :** d. Angle of repose

**Description :** The angle which an inclined plane makes with the horizontal when a body placed on it is about to move down is known as angle of (A) Friction (B) Limiting friction (C) Repose (D) Kinematic friction

**Last Answer :** (C) Repose

**Description :** The ratio of limiting friction and normal reaction is known as (A) Coefficient of friction (B) Angle of friction (C) Angle of repose (D) Sliding friction

**Last Answer :** (A) Coefficient of friction

**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

**Description :** Drillability of fertilizer is _______________ proportional to the kinetic energy of repose a) Inversely b) Directly c) Unaffected d) None of these

**Last Answer :** a) Inversely

**Description :** The passive earth pressure of a soil is proportional to (where is the angle of internal friction of the soil.) (A) tan (45° - ) (B) tan (45° + ) (C) tan2 (45° - ) (D) tan2 (45° + )

**Last Answer :** (D) tan2 (45° + )

**Description :** The active earth pressure of a soil is proportional to (where is the angle of friction of the soil) (A) tan (45° - ) (B) tan2 (45° + /2) (C) tan2 (45° - /2) (D) tan (45° + )

**Last Answer :** Answer: Option C

**Description :** The earth pressure of a soil at rest, is proportional to (where is the angle of internal friction of the soil) (A) tan (45° - ) (B) tan (45° + ) (C) tan2 (45° - ) (D) None of these

**Last Answer :** Answer: Option D

**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

**Description :** Grinding characteristic of a material is given by its (A) HGI (B) Angle of repose (C) Shatter index (D) Abrasion index

**Last Answer :** (A) HGI

**Description :** Pick out the correct statement. (A) Angle of repose is always greater than the angle of slide (B) A hopper is a small bin with a sloping bottom (C) A silo is a short height ... used as a 'modifying agent' (for activating or depressing the adsorption of filming agents) in froth floatation process

**Last Answer :** (B) A hopper is a small bin with a sloping bottom

**Description :** Pick out the wrong statement. (A) Angle of repose of coal increases with its increasing size (B) Specific gravity of coal increases with its increasing maturity (C) Refractive index and reflectance of ... of coal decreases with increases in the volatile matter and decrease in the C/H ratio of coal

**Last Answer :** (D) Specific heat of coal decreases with increases in the volatile matter and decrease in the C/H ratio of coal

**Description :** The change of moisture content of soils, changes the (A) Value of the angle of repose (B) Amount of compaction required (C) Cohesive strength of soil (D) All the above

**Last Answer :** Answer: Option D

**Description :** A plane inclined at an angle to the horizontal at which the soil is expected to stay in the absence of any lateral support, is known as (A) Natural slope line (B) Repose line (C) The line (D) All the above

**Last Answer :** Answer: Option D

**Description :** The angle of repose of a soil is the maximum angle which the outer face of the soil mass makes (A) With the horizontal (B) With the vertical (C) With the perpendicular to the inclined plane of the soil (D) None of these

**Last Answer :** Answer: Option A

**Description :** The stem of a cantilever retaining wall which retains earth level with top is 6 m. If the angle of repose and weight of the soil per cubic metre are 30° and 2000 kg respectively, the effective width of the stem at the bottom, is (A) 51.5 (B) 52.5 (C) 53.5 (D) 54.5

**Last Answer :** Answer: Option C

**Description :** If is the angle of repose of soil of weight w kg/m3 , the horizontal pressure p at a depth of h metres per metre length of wall, is (A) wh × [(1 - sin )/(1 + )] (B) (wh/2) × [(1 - sin )/(1 + )] (C) wh - sin )/(1 + )] (D) wh )/(1 - )

**Last Answer :** Answer: Option A

**Description :** What is the angle of repose and what are its applications in the chemical industry?

**Last Answer :** The dictionary defines angle of repose as the inclination of a plane at which a body placed on the plane would remain at rest, or if in motion would roll or slide down with uniform velocity ... concept is also important in the design of system designed to move bulk solids for the same reasons.

**Description :** Durability of the fertilizer increases with a) Increase in the kinetic angle of repose b) Decrease in the kinetic angle of repose c) Decrease in the speed of the forward travel d) None of the above

**Last Answer :** b) Decrease in the kinetic angle of repose

**Description :** The side slope of formation in embankment /cutting depends on a) Shearing strength of soil and its angle of repose* b) Angle of repose c) Bearing capacity of the soil d) Optimum moisture content of the soil

**Last Answer :** a) Shearing strength of soil and its angle of repose*

**Description :** Define angle of repose.

**Last Answer :** Angle of repose is defined as the angle made by the inclined plane with the horizontal plane at which the body placed on an inclined plane is just on the point of moving down the plane, under the action of its own weight.

**Description :** Incorrect statement for co-efficient of friction could be that A. The coefficient of friction is denoted by the Greek letter µ. B. The coefficient of friction is directly proportional to ... D. The coefficient of friction is inversely proportional to the force pressing the surfaces together

**Last Answer :** The coefficient of friction is constant even in the conditions of fast slipping and high contact pressure

**Description :** he lateral earth pressure on a retaining wall (A) Is equal to mass of the soil retained (B) Proportional to the depth of the soil (C) Proportional to the square of the depth of the soil (D) Proportional to the internal friction of the soil

**Last Answer :** (D) Proportional to the internal friction of the soil

**Description :** The statement ---- if three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two ---- is known as a.Law of polygon of forces b.D'Alembert's principle c.Newtons law of forces d.Lami's theorem e.Law of triangle of forces

**Last Answer :** d. Lami's theorem

**Description :** According to law of triangle of forces (A) Three forces acting at a point will be in equilibrium (B) Three forces acting at a point can be represented by a triangle, each side ... point are in equilibrium, each force is proportional to the sine of the angle between the other two

**Last Answer :** (C) If three forces acting upon a particle are represented in magnitude and direction by the sides of a triangle, taken in order, they will be in equilibrium

**Description :** According to Lami's theorem (A) Three forces acting at a point will be in equilibrium (B) Three forces acting at a point can be represented by a triangle, each side being proportional to ... point are in equilibrium, each force is proportional to the sine of the angle between the other two

**Last Answer :** Answer: Option D

**Description :** Self-locking takes place when a) Coefficient of friction is equal to or greater than the tangent of the helix angle b) Coefficient of friction is lesser than or equal to the tangent of the helix ... friction is equal to or greater than the tangent of the helix angle d) None of the mentioned

**Last Answer :** c) Coefficient of friction is equal to or greater than the tangent of the helix angle

**Description :** Least force required to draw a body up the inclined plane is W sin (plane inclination + friction angle) applied in the direction (A) Along the plane (B) Horizontally (C) Vertically (D) At an angle equal to the angle of friction to the inclined plane

**Last Answer :** (D) At an angle equal to the angle of friction to the inclined plane

**Description :** The angle of internal friction of soil mass is the angle whose (A) Tangent is equal to the rate of the maximum resistance to sliding on any internal inclined plane to the normal pressure acting on ... on any internal inclined plane to the normal pressure acting on the plane (D) None of these

**Last Answer :** Answer: Option A

**Description :** Tangent of angle of friction is equal to?

**Last Answer :** Tangent of angle of friction is equal to coefficient of friction.

**Description :** A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... c.Indeterminate d.Determinate but depends on the acceleration of the cylinder e.None of the above

**Last Answer :** c. Indeterminate

**Description :** A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... on the acceleration of the cylinder d.107 dynes e.Proportional to the coefficient of static friction

**Last Answer :** c. Determinate but depends on the acceleration of the cylinder

**Description :** A sliding contact bearing is operating under stable condition. The pressure developed in oil film is p when the journal rotates at N rpm. The dynamic viscosity of lubricant is μ and effective coefficient of ... to p and f) (d) f is directly proportional to μ and inversely proportional to N

**Last Answer :** (b) f is directly proportional to μ and N

**Description :** Which of the following statements are TRUE for damped vibrations? (P) . For a system having critical damping, the value of the damping ratio is unity and system does not undergo a vibratory motion. (Q) . Logarithmic decrement method ... Q only (B) P and S only (C) P, Q and R only (D) Q and S only

**Last Answer :** (C) P, Q and R only

**Description :** The friction factor is (A) Always inversely proportional to the Reynolds number (B) Not dimensionless (C) Not dependent on the roughness of the pipe (D) None of these

**Last Answer :** (D) None of these

**Description :** Pick out the correct statement. (A) Fanning friction factor is inversely proportional to Reynolds number always (B) The property of a randomly packed bed (with raschig rings) is given by the ratio of the ... the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow

**Last Answer :** (D) Mach number is given by the ratio of the speed of the fluid to that of sound in the fluid under conditions of flow

**Description :** Fanning friction factor for laminar flow of fluid in a circular pipe is (A) Not a function of the roughness of pipe wall (B) Inversely proportional to Reynolds number (C) Both (A) & (B) (D) Neither (A) nor (B)

**Last Answer :** (C) Both (A) & (B)

**Description :** Pick up wrong statement about friction force for dry surfaces. Friction force is (A) Proportional to normal load between the surfaces (B) Dependent on the materials of contact surface (C) Proportional to velocity of sliding (D) Independent of the area of contact surfaces

**Last Answer :** (C) Proportional to velocity of sliding

**Description :** Which one of the following statements is not correct with respect to PSC beams? (a) Loss due to shrinkage is proportional to water-cement ratio used in concrete (b) Loss due to creep is ... to the modulus of elasticity of concrete (d) Loss due to friction occurs in post tensioned concrete members

**Last Answer :** (c) Loss due to elastic deformation is directly proportionally to the modulus of elasticity of concrete

**Last Answer :** The friction at the track is proportional to speed.

**Description :** What is Hooke's Law? (1) Stress is inversely proportional to strain. (2) Stress is directly proportional to strain. (3) Stress and strain are dependent on each other. (4) Stress and strain are independent of each other.

**Last Answer :** (2) Stress is directly proportional to strain. Explanation: Hooke's law is a principle of physics that states that the force (F) needed to extend or compress a spring by some distance X scales linearly with respect to that distance.

**Description :** What is Hooke’s Law? (1) Stress is inversely proportional to strain. (2) Stress is directly proportional to strain. (3) Stress and strain are dependent on each other. (4) Stress and strain are independent of each other.

**Last Answer :** (2) Stress is directly proportional to strain. Explanation: Hooke’s law is a principle of physics that states that the force (F) needed to extend or compress a spring by some distance X scales linearly with respect to that distance.

**Description :** Electrical force exerted by two point charges on each other is inversely proportional to A. sum of their charges B. product of their charges C. distance between them D. square of distance between them

**Last Answer :** square of distance between them

**Description :** Kinetic friction is always A. lesser than static friction B. greater than static friction C. equal to static friction D. equal to contact force

**Last Answer :** lesser than static friction

**Description :** A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is: w) all converted into heat x) equal to its ... kinetic energy at the top of the plane z) dependant on the materials of which the block is made

**Last Answer :** ANSWER: X -- EQUAL TO ITS POTENTIAL ENERGY (WITH RESPECT TO THE BOTTOM OF PLANE) WHEN IT WAS AT THE TOP OF THE PLANE.