Hydraulics & Fluid Mechanics objective question and answer

 

Hydraulics & Fluid Mechanics objective question and answer

Question No. 401

With an increase in size of tube, the rise or depression of liquid in the tube due to surface tension 

will 

(A) Decrease 

(B) Increase 

(C) Remain unchanged 

(D) Depend upon the characteristics of liquid 

Answer: Option A

Question No. 402

Gauge pressure at a point is equal to the absolute pressure __________ the atmospheric pressure. 

(A) Plus 

(B) Minus 

(C) Divide 

(D) Multiply 

Answer: Option B 

Question No. 403

The dynamic viscosity of gases __________ with rise in temperature. 

(A) Remain unaffected 

(B) Increases 

(C) Decreases 

(D) None of these 

Answer: Option B 

Question No. 404

The resultant upward pressure of the fluid on an immersed body due to its tendency to uplift the 

submerged body is called 

(A) Up-thrust 

(B) Reaction 

(C) Buoyancy 

(D) Metacentre 

Answer: Option C 

Question No. 405

The purpose of a surge tank is 

(A) To control the pressure variations due to rapid changes in the pipe line flow 

(B) To eliminate water hammer possibilities 

(C) To regulate flow of water to turbines by providing necessary retarding head of water 

(D) All of the above 

Answer: Option D 

Question No. 406

Flow occurring in a pipeline when a valve is being opened is 

(A) Steady 

(B) Unsteady 

(C) Laminar 

(D) Vortex 

Answer: Option B 

Question No. 407

The water pressure per metre length on a vertical masonry wall of dam is (where w = Specific 

weight of the liquid, and H = Height of the liquid) 

(A) wH/2

(B) wH

(C) wH2

/2 

(D) wH2

/4 

Answer: Option C 

Question No. 408

Euler's equation in the differential form for the motion of liquids is given by 

(A) dp/ + g.dz + v.dv = 0

(B) dp/ - g.dz + v.dv = 0

(C) dp + g.dz + v.dv = 0

(D) dp - g.dz + v.dv = 0

Answer: Option A 

Question No. 409

An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 

which the free surface of liquid makes with the horizontal is such that (where a = Horizontal 

acceleration of the tank, and g = Acceleration due to gravity) 

(A) a/g

(B) a/g

(C) a/2g

(D) a

2

/2g

Answer: Option A 

Question No. 410

The discharge through a small rectangular orifice is given by (where Cd = Coefficient of discharge 

for the orifice, a = Cross-sectional area of the orifice, h = Height of the liquid above the centre of 

the orifice) 

(A) Q = Cd × a × 2gh

(B) Q = (2/3). Cd × a × h

(C) Q = (Cd × a) gh) 

(D) Q = (3Cd × a) h) 

Answer: Option A 

Question No. 411

When a body is placed over a liquid, it will float if 

(A) Gravitational force is equal to the up-thrust of the liquid 

(B) Gravitational force is less than the up-thrust of the liquid 

(C) Gravitational force is more than the up-thrust of the liquid 

(D) None of the above 

Answer: Option B 

Question No. 412

A point, in a compressible flow where the velocity of fluid is zero, is called 

(A) Critical point 

(B) Vena contracta

(C) Stagnation point 

(D) None of these 

Answer: Option C 

Question No. 413

For very great pressures, viscosity of moss gases and liquids 

(A) Remain same 

(B) Increases 

(C) Decreases 

(D) Shows erratic behaviour 

Answer: Option D 

Question No. 414

A weir, generally, used as a spillway of a dam is 

(A) Narrow crested weir 

(B) Broad crested weir 

(C) Ogee weir 

(D) Submerged weir 

Answer: Option C 

Question No. 415

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 

Answer: Option C 

Question No. 416

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 

Answer: Option C 

Question No. 417

The stability of a dam is checked for 

(A) Tension at the base 

(B) Overturning of the wall or dam 

(C) Sliding of the wall or dam 

(D) All of these 

Answer: Option D

Question No. 418

Water is __________ liquid. 

(A) A compressible 

(B) An incompressible 

(C) Both A and B 

(D) None of these 

Answer: Option B 

Question No. 419

The unit of kinematic viscosity in S. I. units is 

(A) N-m/s 

(B) N-s/m2

(C) m

2

/s 

(D) N-m 

Answer: Option C 

Question No. 420

Bernoulli's equation is applied to 

(A) Venturimeter 

(B) Orifice meter 

(C) Pitot tube 

(D) All of these 

Answer: Option D 

Question No. 421

Manometer is used to measure 

(A) Pressure in pipes, channels etc. 

(B) Atmospheric pressure 

(C) Very low pressure 

(D) Difference of pressure between two points 

Answer: Option A 

Question No. 422

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 

Answer: Option C 

Question No. 423

A nozzle placed at the end of a water pipe line discharges water at a 

(A) Low pressure 

(B) High pressure 

(C) Low velocity

(D) High velocity 

Answer: Option D 

Question No. 424

The pressure of fluid due to hammer blow is 

(A) Directly proportional to density of fluid 

(B) Inversely proportional to density of fluid 

(C) Directly proportional to (density)1/2 of fluid 

(D) Inversely proportional to (density)1/2 of fluid 

Answer: Option C 

Question No. 425

In order to measure the flow with a Venturimeter, it is installed in 

(A) Horizontal line 

(B) Inclined line with flow upwards 

(C) Inclined line with flow downwards 

(D) Any direction and in any location 

Answer: Option D 

Question No. 426

If mercury in a barometer is replaced by water, the height of 3.75 cm of mercury will be following 

cm of water 

(A) 51 cm 

(B) 50 cm 

(C) 52 cm 

(D) 52.2 cm 

Answer: Option A 

Question No. 427

According to equation of continuity, 

(A) w1a1 = w2a2

(B) w1v1 = w2v2

(C) a1v1 = a2v2

(D) a1/v1 = a2/v2

Answer: Option C 

Question No. 428

The discharge over a rectangular weir, considering the velocity of approach, is (whereH1 = H + Ha = 

Total height of water above the weir, H = Height of water over the crest of the weir, and Ha = 

Height of water due to velocity of approach)

A. (2/3) Cd × L.√2g [H1 - Ha]

B. (2/3) Cd × L. √2g [H13/2 - Ha3/2]

C. (2/3) Cd × L.√2g [H12 - Ha2]

D. (2/3) Cd × L. √2g [H15/2 - Ha5/2]

Answer: Option B

Question No. 429

The Francis formula for the discharge over Cipoletti weir is 

(A) 1.84 LH1/2

(B) 1.84 LH

(C) 1.84 LH3/2

(D) 1.84 LH5/2

Answer: Option C 

Question No. 430

One poise is equal to 

(A) 0.1 N-s/m2

(B) 1 N-s/m2

(C) 10 N-s/m2

(D) 100 N-s/m2

Answer: Option A 

Question No. 431

When a vertical wall is subjected to pressures due to liquid on both sides, the resultant pressure is 

the __________ of the two pressures. 

(A) Sum 

(B) Difference 

(C) Arithmetic mean 

(D) Geometric mean 

Answer: Option B 

Question No. 432

The mercury does not wet the glass. This is due to the property of the liquid known as 

(A) Cohesion 

(B) Adhesion 

(C) Viscosity 

(D) Surface tension 

Answer: Option D 

Question No. 433

A channel is said to be of most economical cross-section, if 

(A) It gives maximum discharge for a given cross-sectional area and bed slope 

(B) It has minimum wetted perimeter 

(C) It involves lesser excavation for the designed amount of discharge 

(D) All of the above 

Answer: Option D 

Question No. 434

The maximum efficiency of transmission through a pipe is 

(A) 50 % 

(B) 56.7 %

(C) 66.67 % 

(D) 76.66 % 

Answer: Option C 

Question No. 435

Ratio of inertia force to elastic force is known as 

(A) Mach number 

(B) Froude number 

(C) Reynolds number 

(D) Weber's number 

Answer: Option A 

Question No. 436

The discharge through an external mouthpiece is given by (where a = Cross-sectional area of the 

mouthpiece, and H = Height of liquid above the mouthpiece) 

(A) 0.855 a. gH)

(B) 1.855 aH. g)

(C) 1.585 a. gH)

(D) 5.85 aH. g)

Answer: Option A 

Question No. 437

If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its 

(A) Specific weight 

(B) Specific mass 

(C) Specific gravity 

(D) Specific density 

Answer: Option C 

Question No. 438

The discharge over a rectangular notch is (where b = Width of notch, and H = Height of liquid, 

above the sill of the notch) 

(A) (2/3) Cd × b × gH)

(B) (2/3) Cd × b × g) × H

(C) (2/3) Cd × b × g) × H3/2

(D) (2/3) Cd × b × g) × H2

Answer: Option C

Question No. 439

A metal with specific gravity of o floating in a fluid of same specific gravity a will

A. sink to bottom

B. float over fluid

C. partly immersed

D. be fully immersed with top surface at fluid surface

Answer: Option D

Question No. 440

In a short cylindrical external mouthpiece, the vena contracta occurs at a distance __________ the 

diameter of the orifice from the outlet of orifice. 

(A) Equal to 

(B) One-fourth 

(C) One-third 

(D) One-half 

Answer: Option B 

Question No. 441

A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the 

centre of buoyancy. 

(A) Coincides with 

(B) Lies below 

(C) Lies above 

(D) None of these 

Answer: Option B 

Question No. 442

The power transmitted through the nozzle is maximum when the head lost due to friction in the 

pipe is __________ of the total supply head. 

(A) One-half 

(B) One-third 

(C) Two-third 

(D) None of these 

Answer: Option B 

Question No. 443

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 

Answer: Option C 

Question No. 444

The pressure at a point in a fluid will not be same in all the directions when the fluid is 

(A) Moving 

(B) Viscous 

(C) Viscous and static 

(D) Viscous and moving 

Answer: Option D 

Question No. 445

The pressure of air __________ with the increase of height from the surface of the earth.

(A) Does not change 

(B) Decreases 

(C) Increases 

(D) None of these 

Answer: Option B 

Question No. 446

Froude's number is the ratio of inertia force to 

(A) Pressure force 

(B) Elastic force 

(C) Gravity force 

(D) Surface tension force 

Answer: Option C 

Question No. 447

The pressure measured with the help of a Piezometer tube is in 

(A) N/mm2

(B) N/m2

(C) Head of liquid 

(D) All of these 

Answer: Option C 

Question No. 448

The total energy line lies over the centre line of the pipe by an amount equal to 

(A) Pressure head 

(B) Velocity head 

(C) Pressure head + velocity head 

(D) Pressure head - velocity head 

Answer: Option C 

Question No. 449

Water is a __________ fluid. 

(A) Real 

(B) Ideal 

(C) Newtonian 

(D) Non-Newtonian 

Answer: Option C 

Question No. 450

The resultant of all normal pressures acts 

(A) At C.G. of body 

(B) At center of pressure 

(C) Vertically upwards 

(D) At metacentre 

Answer: Option C

Question No. 451

According to Newton's law of viscosity, the shear stress on a layer of a fluid is __________ to the 

rate of shear strain. 

(A) Equal to 

(B) Directly proportional 

(C) Inversely proportional 

(D) None of these 

Answer: Option B 

Question No. 452

A vessel of 4 m3

 contains oil which weighs 30 kN. The specific weight of the oil is 

(A) 4.5 kN/m3

(B) 6 kN/m3

(C) 7.5 kN/m3

(D) 10 kN/m3

Answer: Option C 

Question No. 453

The loss of head at entrance in a pipe is (where v = Velocity of liquid in the pipe) 

(A) v²/2g 

(B) 0.5v²/2g 

(C) 0.375v²/2g 

(D) 0.75v²/2g 

Answer: Option B 

Question No. 454

The increase of temperature results in 

(A) Increase in viscosity of gas 

(B) Increase in viscosity of liquid 

(C) Decrease in viscosity of gas 

(D) Decrease in viscosity of liquid 

Answer: Option D 

Question No. 455

Which of the following is an example of laminar flow? 

(A) Underground flow 

(B) Flow past tiny bodies 

(C) Flow of oil in measuring instruments 

(D) All of these 

Answer: Option D 

Question No. 456

Re-entrant or Borda's mouthpiece is an __________ mouthpiece. 

(A) Internal 

(B) External

(C) Both A and B 

(D) None of these 

Answer: Option A 

Question No. 457

The product of mass and acceleration of flowing liquid is called 

(A) Inertia force 

(B) Viscous force 

(C) Gravity force 

(D) Pressure force 

Answer: Option A 

Question No. 458

The top of the weir over which the water flows is known as 

(A) Sill or crest 

(B) Nappe or vein 

(C) Orifice 

(D) None of these 

Answer: Option A 

Question No. 459

The meatcentric height is the distance between the 

(A) Centre of gravity of the floating body and the centre of buoyancy 

(B) Centre of gravity of the floating body and the metacentre 

(C) Metacentre and centre of buoyancy 

(D) Original centre of buoyancy and new centre of buoyancy 

Answer: Option B 

Question No. 460

The time oscillation of a floating body with increase in meatcentric height will be 

(A) Same 

(B) Higher 

(C) Lower 

(D) Lower/higher depending on weight of body 

Answer: Option C 

Question No. 461

The property of a liquid which offers resistance to the movement of one layer of liquid over 

another adjacent layer of liquid, is called 

(A) Surface tension 

(B) Compressibility 

(C) Capillarity 

(D) Viscosity 

Answer: Option D

Question No. 462

An internal mouthpiece is said to be running __________ if the length of the mouthpiece is more 

than three times the diameter of the orifice. 

(A) Free 

(B) Partially 

(C) Full 

(D) None of these 

Answer: Option C 

Question No. 463

A manometer is used to measure 

(A) Low pressure 

(B) Moderate pressure 

(C) High pressure 

(D) Atmospheric pressure 

Answer: Option C 

Question No. 464

Which of the following meters is not associated with viscosity? 

(A) Red wood 

(B) Say bolt 

(C) Engler 

(D) Orsat 

Answer: Option D 

Question No. 465

The specific weight of water in S.I. units is taken as 

(A) 9.81 kN/m3

(B) 9.81 × 103

 N/m3

(C) 9.81 × 10-6 N/mm3

(D) Any one of these 

Answer: Option D

Question No. 466

The celerity (velocity) of a pressure wave in a fluid is given by (where K = Bulk modulus, and ρ = Density of the fluid)

A. K.ρ

B. K/ρ

C. ρ/K

D. None of these

Answer: Option B

Question No. 467

A fluid having no viscosity is known as 

(A) Real fluid

(B) Ideal fluid 

(C) Newtonian fluid 

(D) Non-Newtonian fluid 

Answer: Option B 

Question No. 468

In order to avoid tendency of separation at throat in a Venturimeter, the ratio of the diameter at 

throat to the diameter of pipe should be 

(A) 1/16 to 1/8

(B) 1/8 to 1/4 

(C) 1/4 to 1/3 

(D) 1/3 to 1/2 

Answer: Option D 

Question No. 469

Liquids transmit pressure equally in all the directions. This is according to 

(A) Boyle's law 

(B) Archimedes principle 

(C) Pascal's law 

(D) Newton's formula 

Answer: Option C 

Question No. 470

The discharge over a triangular notch is 

A) Inversely proportional to H

3/2

B) Directly proportional to H

3/2

C) Inversely proportional to H

5/2

D) Directly proportional to H

5/2

Answer: Option D 

Question No. 471

A flow whose streamline is represented by a straight line, is called __________ dimensional flow. 

(A) One 

(B) Two 

(C) Three 

(D) Four 

Answer: Option A 

Question No. 472

The body will float if the force of buoyancy is __________ the weight of the liquid displaced. 

(A) Equal to 

(B) Less than 

(C) More than 

(D) None of these 

Answer: Option C

Question No. 473

The velocity corresponding to Reynold number of 2000 is called 

(A) Sub-sonic velocity 

(B) Super-sonic velocity 

(C) Lower critical velocity 

(D) Higher critical velocity 

Answer: Option C 

Question No. 474

A structure, whose width is __________ the width of the channel, is called a flumed structure. 

(A) Less than 

(B) More than 

(C) Equal 

(D) None of these 

Answer: Option A 

Question No. 475

The force of buoyancy is always __________ the weight of the liquid displaced by the body. 

(A) Equal to 

(B) Less than 

(C) More than 

(D) None of these 

Answer: Option A 

Question No. 476

The density of water is 1000 kg/m3

 at 

(A) 0° C 

(B) 0° K 

(C) 4° C 

(D) 20° C 

Answer: Option C 

Question No. 477

Bulk modulus of a fluid __________ as the pressure increases. 

(A) Remain same 

(B) Decreases 

(C) Increases 

(D) None of these 

Answer: Option C 

Question No. 478

The coefficient of viscosity may be determined by 

(A) Capillary tube method 

(B) Orifice type viscometer 

(C) Rotating cylinder method

(D) All of these 

Answer: Option D 

Question No. 479

Center of pressure on an inclined plane is 

(A) At the Centroid 

(B) Above the Centroid 

(C) Below the Centroid 

(D) At metacentre 

Answer: Option C 

Question No. 480

When the Mach number is less than unity, the flow is called 

(A) Sub-sonic flow 

(B) Sonic flow 

(C) Super-sonic flow 

(D) Hyper-sonic flow 

Answer: Option A 

Question No. 481

When the pressure intensity at a point is more than the local atmospheric pressure, then the 

difference of these two pressures is called 

(A) Gauge pressure 

(B) Absolute pressure 

(C) Positive gauge pressure 

(D) Vacuum pressure 

Answer: Option C 

Question No. 482

If the coefficient of discharge is 0.6, then the discharge over a right angled notch is 

(A) 0.417 H5/2

(B) 1.417 H5/2

(C) 4.171 H5/2

(D) 7.141 H5/2

Answer: Option B 

Question No. 483

The most efficient section of a channel is 

(A) Triangular 

(B) Rectangular 

(C) Square 

(D) Trapezoidal 

Answer: Option D

Question No. 484

A pipe of length more than double the diameter of orifice fitted externally or internally to the 

orifice is called a 

(A) Notch 

(B) Weir 

(C) Mouthpiece 

(D) Nozzle 

Answer: Option C 

Question No. 485

An open tank containing liquid is moving with an acceleration on an inclined plane. The inclination 

of the free surface of the liquid will be __________ to the acceleration of the tank. 

(A) Equal to 

(B) Directly proportional 

(C) Inversely proportional 

(D) None of these 

Answer: Option B 

Question No. 486

The coefficient of discharge for an external mouthpiece is 

(A) 0.375 

(B) 0.5 

(C) 0.707 

(D) 0.855 

Answer: Option D 

Question No. 487

The process of diffusion of one liquid into the other through a semi permeable membrane is called 

(A) Viscosity 

(B) Osmosis 

(C) Surface tension 

(D) Cohesion 

Answer: Option B 

Question No. 488

One stoke is equal to 

(A) 10-2 m2

/s 

(B) 10-3 m2

/s 

(C) 10-4 m2

/s 

(D) 10-6 m2

/s 

Answer: Option C 

Question No. 489

Falling drops of water become spheres due to the property of 

(A) Surface tension of water

(B) Compressibility of water 

(C) Capillarity of water 

(D) Viscosity of water 

Answer: Option A 

Question No. 490

The specific gravity of an oil whose specific weight is 7.85 kN/m3

, is 

(A) 0.8 

(B) 1 

(C) 1.2 

(D) 1.6 

Answer: Option A 

Question No. 491

The length of the divergent cone in a Venturimeter is __________ that of the convergent cone. 

(A) Equal to 

(B) Double 

(C) Three to four times 

(D) Five to six times 

Answer: Option C 

Question No. 492

If a body floating in a liquid returns back to its original position, when given a small angular 

displacement, the body is said to be in 

(A) Neutral equilibrium 

(B) Stable equilibrium 

(C) Unstable equilibrium 

(D) None of these 

Answer: Option B 

Question No. 493

The stress-strain relation of the Newtonian fluid is 

(A) Linear 

(B) Parabolic 

(C) Hyperbolic 

(D) Inverse type 

Answer: Option A 

Question No. 494

The viscosity of a liquid __________ its rate of flow through a hole in a vessel. 

(A) Effects 

(B) Does not effect 

(C) Both A and B 

(D) None of these 

Answer: Option A

Question No. 495

The coefficient of discharge in case of internal mouthpiece is __________ that of external 

mouthpiece. 

(A) Less than 

(B) More than 

(C) Equal to 

(D) None of these 

Answer: Option A 

Question No. 496

The unit of surface tension is 

(A) N/m 

(B) N/m2

(C) N/m3

(D) N-m 

Answer: Option A 

Question No. 497

The units of dynamic or absolute viscosity are 

(A) Metres² per sec 

(B) kg sec/meter 

(C) Newton-sec per meter 

(D) Newton-sec² per meter 

Answer: Option C 

Question No. 498

A notch is used to measure __________ of liquids. 

(A) Pressure 

(B) Discharge 

(C) Velocity 

(D) Volume 

Answer: Option B 

Question No. 499

Euler's number is the ratio of __________ force to pressure force. 

(A) Inertia 

(B) Gravity 

(C) Viscous 

(D) None of these 

Answer: Option A 

Question No. 500

A flow in which the volume of a fluid and its density does not change during the flow is called 

_________ flow. 

(A) Incompressible

(B) Compressible 

(C) Viscous 

(D) None of these 

Answer: Option A

Question No. 501

The weight per unit volume of a liquid at a standard temperature and pressure is called 

(A) Specific weight 

(B) Mass density 

(C) Specific gravity 

(D) None of these 

Answer: Option A 

Question No. 502

The efficiency of power transmission through pipe is (where H = Total supply head, and hf

 = Head 

lost due to friction in the pipe) 

(A) (H - hf )/H

(B) H/(H - hf )

(C) (H + hf )/H

(D) H/(H + hf )

Answer: Option A 

Question No. 503

The error in discharge (dQ/Q) to the error in measurement of head (dH/H) over a rectangular 

notch is given by 

(A) dQ/Q = (1/2) × (dH/H)

(B) dQ/Q = (3/4) × (dH/H)

(C) dQ/Q = (dH/H)

(D) dQ/Q = (3/2) × (dH/H)

Answer: Option D 

Question No. 504

The flow of water through the hole in the bottom of a wash basin is an example of 

(A) Steady flow 

(B) Uniform flow 

(C) Free vortex 

(D) Forced vortex 

Answer: Option C 

Question No. 505

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

Answer: Option C 

Question No. 506

The hydraulic mean depth or the hydraulic radius is the ratio of 

(A) Area of flow and wetted perimeter 

(B) Wetted perimeter and diameter of pipe 

(C) Velocity of flow and area of flow 

(D) None of these 

Answer: Option A 

Question No. 507

A flow whose streamline is represented by a curve, is called 

(A) One-dimensional flow 

(B) Two-dimensional flow 

(C) Three-dimensional flow 

(D) Four-dimensional flow 

Answer: Option B 

Question No. 508

The value of coefficient of discharge is __________ the value of coefficient of velocity. 

(A) Less than 

(B) Same as 

(C) More than 

(D) None of these 

Answer: Option A 

Question No. 509

The hydraulic mean depth for a circular pipe of diameter (d) is 

(A) d/6 

(B) d/4 

(C) d/2 

(D) d

Answer: Option B 

Question No. 510

A fluid whose viscosity does not change with the rate of deformation or shear strain is known as 

(A) Real fluid 

(B) Ideal fluid 

(C) Newtonian fluid 

(D) Non-Newtonian fluid 

Answer: Option C 

Question No. 511

Barometer is used to measure 

(A) Velocity of liquid

(B) Atmospheric pressure 

(C) Pressure in pipes and channels 

(D) Difference of pressure between two points in a pipe 

Answer: Option B 

Question No. 512

An error of 1% in measuring head over the crest of the notch (H) will produce an error of 

__________ in discharge over a triangular notch, 

(A) 1 % 

(B) 1.5 % 

(C) 2 % 

(D) 2.5 % 

Answer: Option D 

Question No. 513

The coefficient of venturi-flume, generally, lies between 

(A) 0.3 to 0.45 

(B) 0.50 to 0.75 

(C) 0.75 to 0.95 

(D) 0.95 to 1.0 

Answer: Option D 

Question No. 514

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 

Answer: Option D 

Question No. 515

The specific gravity of water is taken as 

(A) 0.001 

(B) 0.01 

(C) 0.1 

(D) 1 

Answer: Option D