In the case of steady flow of a fluid, the acceleration of any fluid particle is (A) Constant (B) Variable (C) Zero (D) Zero under limiting conditions

In the case of steady flow of a fluid, the acceleration of any fluid particle is
(A) Constant
(B) Variable
(C) Zero
(D) Zero under limiting conditions
by

1 Answer

Answer :

Answer: Option C
by

Related questions

In an ideal P.F.R. at steady state conditions (A) The composition of reactants remains constant along a flow path (B) The conversion of the reactant varies from point to point along a flow path (C) There is no lateral mixing of fluid (D) There may be diffusion along the flow path

Description : In an ideal P.F.R. at steady state conditions (A) The composition of reactants remains constant along a flow path (B) The conversion of the reactant varies from point to point along a flow path (C) There is no lateral mixing of fluid (D) There may be diffusion along the flow path

Last Answer : (B) The conversion of the reactant varies from point to point along a flow path

The fluid velocity varies as the cube of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop for __________ fluid. (A) Newtonian (B) Pseudo-plastic (C) Dilatent (D) Bingham plastic

Description : The fluid velocity varies as the cube of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop for __________ fluid. (A) Newtonian (B) Pseudo-plastic (C) Dilatent (D) Bingham plastic

Last Answer : (B) Pseudo-plastic

The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid. (A) Newtonian (B) Dilatant (C) Pseudo-plastic (D) Non-Newtonian

Description : The fluid velocity varies as the square of the cylindrical pipe diameter, in case of steady state laminar flow at constant pressure drop, for __________ fluid. (A) Newtonian (B) Dilatant (C) Pseudo-plastic (D) Non-Newtonian

Last Answer : (A) Newtonian

The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop of __________ fluid. (A) Dilatent (B) Pseudo-plastic (C) Bingham plastic (D) Newtonian

Description : The fluid velocity varies as the square root of the cylindrical pipe diameter in case of steady state laminar flow at constant pressure drop of __________ fluid. (A) Dilatent (B) Pseudo-plastic (C) Bingham plastic (D) Newtonian

Last Answer : (A) Dilatent

Consider the following statements in respect of steady laminar flow through a circular pipe: 1. Shear stress is zero on the central axis of the pipe 2. Discharge varies directly with the viscosity of the fluid 3. Velocity is maximum at the centre of the pipe. 4. Hydraulic gradient varies as the square of the mean velocity of flow. Which of these statements are correct? (a) 1, 2 , 3 & 4 (b) 1 & 3 only (c) 2 & 4 only (d)3 & 4 only

Description : Consider the following statements in respect of steady laminar flow through a circular pipe: 1. Shear stress is zero on the central axis of the pipe 2. Discharge varies directly with the viscosity of the fluid 3. Velocity is maximum at the ... 2 , 3 & 4 (b) 1 & 3 only (c) 2 & 4 only (d)3 & 4 only

Last Answer : (b) 1 & 3 only

a particle moves with uniform velocity. Which o fthe following statements about the motion of the particle is true. (a) its speed is zero. (b) its acceleration is zero. © its acceleration is opposite to the velocity. (d) its speed may be variable

Description : a particle moves with uniform velocity. Which o fthe following statements about the motion of the particle is true. (a) its speed is zero. (b) its acceleration is zero. © its acceleration is opposite to the velocity. (d) its speed may be variable

Last Answer : Its acceleration is zero

According to Bernoulli's equation for steady ideal fluid flow (A) Principle of conservation of mass holds (B) Velocity and pressure are inversely proportional (C) Total energy is constant throughout (D) The energy is constant along a streamline but may vary across streamlines

Description : According to Bernoulli's equation for steady ideal fluid flow (A) Principle of conservation of mass holds (B) Velocity and pressure are inversely proportional (C) Total energy is constant throughout (D) The energy is constant along a streamline but may vary across streamlines

Last Answer : Answer: Option D

The space time is equivalent to the holding time in a steady state mixed reactor for (A) Non-isothermal gas reaction (B) Variable fluid density systems (C) Constant fluid density systems(D) Gas reactions with changing number of moles

Description : The space time is equivalent to the holding time in a steady state mixed reactor for (A) Non-isothermal gas reaction (B) Variable fluid density systems (C) Constant fluid density systems (D) Gas reactions with changing number of moles

Last Answer : (C) Constant fluid density systems

The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream (A) Keeps on increasing (B) Keeps on decreasing (C) Remain constant (D) May increase/decrease

Description : The total energy of each particle at various places in the case of perfect incompressible fluid flowing in continuous stream (A) Keeps on increasing (B) Keeps on decreasing (C) Remain constant (D) May increase/decrease

Last Answer : Answer: Option C

A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is – (1) zero (2) V/r (3) V/r² (4) V²/r

Description : A particle is moving in a uniform circular motion with constant speed v along a circle of radius r. The acceleration-of the particle is – (1) zero (2) V/r (3) V/r² (4) V²/r

Last Answer : (4) V²/r Explanation: When a particle is moving in a uniform circular motion with constant speed and radius. the acceleration of the particle is given by v2/r. The particle will exhibit centripetal acceleration.

One dimensional fluid flow implies the (A) Flow in straight lines only (B) Uniform flow (C) Steady uniform flow (D) Flow in which transverse components are zero

Description : One dimensional fluid flow implies the (A) Flow in straight lines only (B) Uniform flow (C) Steady uniform flow (D) Flow in which transverse components are zero

Last Answer : (D) Flow in which transverse components are zero

In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow? (A) Discharge of water by a centrifugal pump being run at a constant rpm (B) Water flow in the suction and discharge pipe of a reciprocating pump (C) Water discharge from a vertical vessel in which constant level is maintained (D) Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe

Description : In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow? (A) ... level is maintained (D) Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe

Last Answer : (B) Water flow in the suction and discharge pipe of a reciprocating pump

A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called (A) Steady flow (B) Uniform flow (C) Streamline flow (D) Turbulent flow

Description : A flow in which each liquid particle has a definite path, and the paths of individual particles do not cross each other, is called (A) Steady flow (B) Uniform flow (C) Streamline flow (D) Turbulent flow

Last Answer : Answer: Option C

The flow in which each liquid particle has a definite path and their paths do not cross each other is called (A) One dimensional flow (B) Streamline flow (C) Steady flow (D) Turbulent flow

Description : The flow in which each liquid particle has a definite path and their paths do not cross each other is called (A) One dimensional flow (B) Streamline flow (C) Steady flow (D) Turbulent flow

Last Answer : Answer: Option B

Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition. (A) ∂/∂s = 0 (B) ∂/∂t = 0 (C) ∂/∂s = constant (D) ∂/∂t = constant

Description : Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition. (A) ∂/∂s = 0 (B) ∂/∂t = 0 (C) ∂/∂s = constant (D) ∂/∂t = constant

Last Answer : (B) ∂/∂t = 0

For steady ideal fluid flow, the Bernoulli's equation states that the (A) Velocity is constant along a stream line (B) Energy is constant throughout the fluid (C) Energy is constant along a stream line, but may vary across stream lines (D) None of these

Description : For steady ideal fluid flow, the Bernoulli's equation states that the (A) Velocity is constant along a stream line (B) Energy is constant throughout the fluid (C) Energy is constant along a stream line, but may vary across stream lines (D) None of these

Last Answer : (C) Energy is constant along a stream line, but may vary across stream lines

Pick out the wrong statement. (A) For a first order consecutive reaction, a tubular flow reactor as compared to a stirred tank reactor provides higher overall selectivity(B) For an ideal mixed reactor at steady state, the exit stream has the samecomposition as fluid within the reactor and the space time is equivalent toholding time for constant density system(C) Plug flow reactor (PFR) is always smaller than mixed reactor for allpositive reaction orders for a particular duty(D) Reaction rate does not decrease appreciably as the reaction proceeds incase of an autocatalytic reaction

Description : Pick out the wrong statement. (A) For a first order consecutive reaction, a tubular flow reactor as compared to a stirred tank reactor provides higher overall selectivity(B) For an ideal ... D) Reaction rate does not decrease appreciably as the reaction proceeds in case of an autocatalytic reaction

Last Answer : (A) For a first order consecutive reaction, a tubular flow reactor as compared to a stirred tank reactor provides higher overall selectivity

Steady flow occurs, when the (A) Conditions change steadily with time (B) Conditions are the same at the adjacent points at any instant (C) Conditions do not change with time at any point (D) Rate of the velocity change is constant

Description : Steady flow occurs, when the (A) Conditions change steadily with time (B) Conditions are the same at the adjacent points at any instant (C) Conditions do not change with time at any point (D) Rate of the velocity change is constant

Last Answer : (C) Conditions do not change with time at any point

A flow in which the viscosity of fluid is dominating over the inertia force is called (A) Steady flow (B) Unsteady flow (C) Laminar flow (D) Turbulent flow

Description : A flow in which the viscosity of fluid is dominating over the inertia force is called (A) Steady flow (B) Unsteady flow (C) Laminar flow (D) Turbulent flow

Last Answer : Answer: Option C

The Euler's equation for the motion of liquids is based upon the assumption that (A) The fluid is non - viscous, homogeneous and incompressible (B) The velocity of flow is uniform over the section (C) The flow is continuous, steady and along the stream line (D) All of the above

Description : The Euler's equation for the motion of liquids is based upon the assumption that (A) The fluid is non - viscous, homogeneous and incompressible (B) The velocity of flow is uniform over the section (C) The flow is continuous, steady and along the stream line (D) All of the above

Last Answer : Answer: Option D

The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as (A) One dimensional flow (B) Uniform flow (C) Steady flow (D) Turbulent flow

Description : The flow in which the particles of a fluid attain such velocities that varies from point to point in magnitude and direction as well as from instant to instant, is known as (A) One dimensional flow (B) Uniform flow (C) Steady flow (D) Turbulent flow

Last Answer : Answer: Option D

Steady flow occurs when (A) The direction and magnitude of the velocity at all points are identical (B) The velocity of successive fluid particles, at any point, is the same at successive periods of time (C) The magnitude and direction of the velocity do not change from point to point in the fluid (D) The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

Description : Steady flow occurs when (A) The direction and magnitude of the velocity at all points are identical (B) The velocity of successive fluid particles, at any point, is the same at successive ... fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

Last Answer : Answer: Option B

Mass velocity in case of steady flow and through a constant cross￾section conduit is independent of the (A) Temperature (B) Pressure (C) Both (A) & (B) (D) Neither (A) nor (B)

Description : Mass velocity in case of steady flow and through a constant cross￾section conduit is independent of the (A) Temperature (B) Pressure (C) Both (A) & (B) (D) Neither (A) nor (B)

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

In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when (A) n = y = 1.4 (B) n = 0 (C) n = 1 (D) n = 1.66

Description : In case of steady flow compression polytropic process (PVn = constant), the work done on air is the lowest, when (A) n = y = 1.4 (B) n = 0 (C) n = 1 (D) n = 1.66

Last Answer : (C) n = 1

The flow in which conditions do not change with time at any point, is known as (A) One dimensional flow (B) Uniform flow (C) Steady flow (D) Turbulent flow

Description : The flow in which conditions do not change with time at any point, is known as (A) One dimensional flow (B) Uniform flow (C) Steady flow (D) Turbulent flow

Last Answer : Answer: Option C

A one dimensional flow is one which (A) Is uniform flow (B) Is steady uniform flow (C) Takes place in straight lines (D) Involves zero transverse component of flow

Description : A one dimensional flow is one which (A) Is uniform flow (B) Is steady uniform flow (C) Takes place in straight lines (D) Involves zero transverse component of flow

Last Answer : Answer: Option D

Boyle’s law i.e. pV = constant is applicable to gases under  (a) all ranges of pressures  (b) only small range of pressures  (c) high range of pressures  (d) steady change of pressures  (e) atmospheric conditions.

Description : Boyle’s law i.e. pV = constant is applicable to gases under  (a) all ranges of pressures  (b) only small range of pressures  (c) high range of pressures  (d) steady change of pressures  (e) atmospheric conditions.

Last Answer : Answer : b

What is the nature of velocity versus time in the case of an object moving at a steady acceleration from a stationary position ?

Description : What is the nature of velocity versus time in the case of an object moving at a steady acceleration from a stationary position ?

Last Answer : In the case of an object moving at a steady acceleration from a stationary position, the velocity versus the time line will be a straight line to the point.

In case of type-1 system steady state acceleration is?

Description :  In case of type-1 system steady state acceleration is?

Last Answer :  In case of type-1 system steady state acceleration is infinity.

A flow in which the quantity of liquid flowing per second is not constant, is called (A) Streamline flow (B) Turbulent flow (C) Steady flow (D) Unsteady flow

Description : A flow in which the quantity of liquid flowing per second is not constant, is called (A) Streamline flow (B) Turbulent flow (C) Steady flow (D) Unsteady flow

Last Answer : Answer: Option D

A flow in which the quantity of liquid flowing per second is constant, is called __________ flow. (A) Steady (B) Streamline (C) Turbulent (D) Unsteady

Description : A flow in which the quantity of liquid flowing per second is constant, is called __________ flow. (A) Steady (B) Streamline (C) Turbulent (D) Unsteady

Last Answer : Answer: Option A

Uniform flow occurs when (A) The flow is steady (B) The flow is streamline (C) Size and shape of the cross section in a particular length remain constant (D) Size and cross section change uniformly along length

Description : Uniform flow occurs when (A) The flow is steady (B) The flow is streamline (C) Size and shape of the cross section in a particular length remain constant (D) Size and cross section change uniformly along length

Last Answer : Answer: Option C

A flow through a long pipe at constant rate is called (A) Steady uniform flow (B) Steady non-uniform flow (C) Unsteady uniform flow (D) Unsteady non-uniform flow

Description : A flow through a long pipe at constant rate is called (A) Steady uniform flow (B) Steady non-uniform flow (C) Unsteady uniform flow (D) Unsteady non-uniform flow

Last Answer : Answer: Option A

A flow through an expanding tube at constant rate is called (A) Steady uniform flow (B) Steady non-uniform flow (C) Unsteady uniform flow (D) Unsteady non-uniform flow

Description : A flow through an expanding tube at constant rate is called (A) Steady uniform flow (B) Steady non-uniform flow (C) Unsteady uniform flow (D) Unsteady non-uniform flow

Last Answer : Answer: Option B

Consider the following assumption made in the analysis of a jet impinging normally on a moving plate to introduce the principle of moment of momentum: 1. Friction between jet and plate is neglected. 2. Flow is steady 3. Impinging momentum of jet is uncharged. 4. Plate moves at a constant velocity. Which of these statements are relevant? (a) 1, 2 & 4 only (b) 1, 2 & 3 only (c) 2, 3 and 4 only (d) 1, 2, 3 & 4

Description : Consider the following assumption made in the analysis of a jet impinging normally on a moving plate to introduce the principle of moment of momentum: 1. Friction between jet and plate is neglected. 2. Flow is steady 3. Impinging momentum of ... b) 1, 2 & 3 only (c) 2, 3 and 4 only (d) 1, 2, 3 & 4

Last Answer : (a) 1, 2 & 4 only

Our weight will be zero under all of the following conditions EXCEPT a.107 dynes b.We are at the centre of the earth c.When we are ascending in a lift with acceleration of 4.9 m/s2 d.We are orbiting in a satellite e.When we are freely faling

Description : Our weight will be zero under all of the following conditions EXCEPT a.107 dynes b.We are at the centre of the earth c.When we are ascending in a lift with acceleration of 4.9 m/s2 d.We are orbiting in a satellite e.When we are freely faling

Last Answer : c. When we are ascending in a lift with acceleration of 4.9 m/s2

A stream line is (A) Fixed in space in steady flow (B) Always the path of particle (C) Drawn normal to the velocity vector at every point (D) A line connecting the mid points of flow cross-section

Description : A stream line is (A) Fixed in space in steady flow (B) Always the path of particle (C) Drawn normal to the velocity vector at every point (D) A line connecting the mid points of flow cross-section

Last Answer : (A) Fixed in space in steady flow

Pick out the wrong statemen(A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an irreversible series reaction (C) The fractional conversion at any time is same for both the constant as well as the variable volume system in case of an irreversible unimolecular type first order reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Description : Pick out the wrong statemen (A) Autocatalytic reactions are exemplified by microbial fermentation reactions (B) The slowest step has the greatest influence on the overall reaction rate in case of an ... reaction (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Last Answer : (D) Hydrolysis of ester in presence of alkali or acid is a zero order reaction

Why is the acceleration of a moving particle zero ?

Description : Why is the acceleration of a moving particle zero ?

Last Answer : : If the value and direction of velocity of a particle remains unchanged during motion, that is, if the particle travels equal distances at the same time in a certain direction, then the velocity of ... there is no acceleration. This is why the acceleration of a particle moving at zero is zero.

A particle experiences constant acceleration for 20 seconds after starting from rest. If it travels a distance D1 in the first 10 seconds and distance D2 in the next 10 seconds then, (a) D2 = D1 (b) D2 = 2D1 (c) D2 = 3D1 (d) D2 = 4D1 -Science

Description : A particle experiences constant acceleration for 20 seconds after starting from rest. If it travels a distance D1 in the first 10 seconds and distance D2 in the next 10 seconds then, (a) D2 = D1 (b) D2 = 2D1 (c) D2 = 3D1 (d) D2 = 4D1 -Science

Last Answer : (c) is the answer

A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that (a) Its velocity is constant (b) Its acceleration is constant (c) Its kinetic energy is constant (d) It moves in a circular path

Description : A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that (a) Its ... ) Its acceleration is constant (c) Its kinetic energy is constant (d) It moves in a circular path

Last Answer : Ans:(d)

If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with– (1) constant speed (2) constant velocity (3) constant acceleration (4) varying acceleration

Description : If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with– (1) constant speed (2) constant velocity (3) constant acceleration (4) varying acceleration

Last Answer : (3) constant acceleration Explanation: In this case the given equation shows that that the velocity is linear with time and therefore the particle is moving with constant acceleration because for a ... acceleration the graph of the velocity time graph should be in linear with the time function.

If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with (1) constant speed (2) constant velocity (3) constant acceleration (4) varying acceleration

Description : If the velocity-time graph of a particle is represented by y = mt + c, then the particle is moving with (1) constant speed (2) constant velocity (3) constant acceleration (4) varying acceleration

Last Answer : constant acceleration

The continuity equation in ideal fluid flow states that (A) Net rate of inflow into any small volume must be zero (B) Energy is not constant along a streamline (C) Energy is constant along a streamline (D) There exists a velocity potential

Description : The continuity equation in ideal fluid flow states that (A) Net rate of inflow into any small volume must be zero (B) Energy is not constant along a streamline (C) Energy is constant along a streamline (D) There exists a velocity potential

Last Answer : (A) Net rate of inflow into any small volume must be zero

In an incompressible flow of fluid, the fluid (A) Temperature remains constant (B) Compressibility is greater than zero (C) Density does not change with pressure & temperature (D) Is frictionless

Description : In an incompressible flow of fluid, the fluid (A) Temperature remains constant (B) Compressibility is greater than zero (C) Density does not change with pressure & temperature (D) Is frictionless

Last Answer : (C) Density does not change with pressure & temperature

In an ideal mixed reactor (at steady state), the (A) Space time is equivalent to holding time for constant density systems (B) Composition throughout the reactor remains same (C) Exit stream has the same composition as the fluid within the reactor (D) All (A), (B) and (C)

Description : In an ideal mixed reactor (at steady state), the (A) Space time is equivalent to holding time for constant density systems (B) Composition throughout the reactor remains same (C) Exit stream has the same composition as the fluid within the reactor (D) All (A), (B) and (C)

Last Answer : (D) All (A), (B) and (C)

Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is steady. C. Fluid flow is uniform & turbulent. D. Fluid is compressible. E. Fluid is incompressible. (A) A, C, D (B) B, D, E (C) A, B, E (D) A, D, E

Description : Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation? A. Fluid flow is frictionless & irrotational. B. Fluid flow is ... A, C, D (B) B, D, E (C) A, B, E (D) A, D, E

Last Answer : (C) A, B, E

Nature of fluid flow during the opening of a valve in a pipeline is (A) Laminar (B) Unsteady (C) Steady (D) Uniform

Description : Nature of fluid flow during the opening of a valve in a pipeline is (A) Laminar (B) Unsteady (C) Steady (D) Uniform

Last Answer : (B) Unsteady

Fluid flow at increasing rate through a diverging pipe is an example of __________ flow. (A) Steady uniform (B) Non-steady uniform (C) Steady non-uniform (D) Non-steady non-uniform

Description : Fluid flow at increasing rate through a diverging pipe is an example of __________ flow. (A) Steady uniform (B) Non-steady uniform (C) Steady non-uniform (D) Non-steady non-uniform

Last Answer : (D) Non-steady non-uniform

Pick out the wrong statement. (A) The form drag is dependent upon the occurrence of a wake (B) The shear stress at any given cross-section of a pipe for steady flow (either laminar or turbulent) varies linearly as the radial distance (C) An ideal fluid is the one, which has negligible surface tension and obeys the Newton's law of viscosity (D) Existence of the boundary layer in fluid flow is because of viscosity of the fluid

Description : Pick out the wrong statement. (A) The form drag is dependent upon the occurrence of a wake (B) The shear stress at any given cross-section of a pipe for steady flow (either laminar or turbulent ... of viscosity (D) Existence of the boundary layer in fluid flow is because of viscosity of the fluid

Last Answer : (C) An ideal fluid is the one, which has negligible surface tension and obeys the Newton's law of viscosity