MCQOPTIONS
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MCQOPTIONS
This section includes 297 Mcqs, each offering curated multiple-choice questions to sharpen your Environmental Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 251. |
A syphon is used |
| A. | to connect water reservoirs at different levels intervened by a hill |
| B. | to supply water to a town from higher level to lower level |
| C. | to fill up a tank with water at higher level from a lower level |
| D. | none of these. |
| Answer» B. to supply water to a town from higher level to lower level | |
| 252. |
The gases are considered incompressible if Match number is |
| A. | equal to 1.0 |
| B. | equal to 1.5 |
| C. | is more than 0.5 |
| D. | less than 0.2 |
| Answer» E. | |
| 253. |
A pitot tube is used to measure |
| A. | pressure |
| B. | difference in pressure |
| C. | velocity of flow |
| D. | none of these. |
| Answer» D. none of these. | |
| 254. |
If u, v, w are the components of the velocity v of a moving particle, then the following equation represents |
| A. | one dimensional flow |
| B. | two dimensional flow |
| C. | three dimensional flow |
| D. | none of these |
| Answer» D. none of these | |
| 255. |
In flow, the liquid particles may possess |
| A. | potential energy |
| B. | kinetic energy |
| C. | pressure energy |
| D. | all the above. |
| Answer» E. | |
| 256. |
Euler's equation for motion of liquids, is given by |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 257. |
An ideal flow of a liquid obeys |
| A. | Continuity equation |
| B. | Newton's law of viscosity |
| C. | Newton's second law of motion |
| D. | dynamic viscosity law, |
| Answer» B. Newton's law of viscosity | |
| 258. |
Chezy's constant given by following equation is suggested by |
| A. | Bazin |
| B. | Kutter |
| C. | Manning |
| D. | Powell |
| Answer» B. Kutter | |
| 259. |
The discharge through a V-notch weir varies as |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 260. |
The dimensional formula of force is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 261. |
For an irrotational flow, the following equation is given by |
| A. | Cauchy-Riemann |
| B. | Reynold |
| C. | Laplaces |
| D. | Bernoulli |
| Answer» D. Bernoulli | |
| 262. |
The velocity of flow (v) at the outlet of a syphon of length l, is given by |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 263. |
The velocity of flow at the critical depth (hc) is called critical velocity (Vc) which is equal to |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» C. C | |
| 264. |
Pick up the correct statement regarding convergent divergent mouth piece from the following : |
| A. | It converges upto Venacontracta and then diverges |
| B. | In this mouth piece there is no loss of energy due to sudden enlargement |
| C. | The coefficient of discharge is unity |
| D. | All the above. |
| Answer» E. | |
| 265. |
A spherical load 900 kg is rolled through 9.8 m across the deck of a ship weighing 10, 000 kg. If the metacentric height of the ship is 5 metres, the angle of heel, is |
| A. | 10° 5' |
| B. | 10° 10' |
| C. | 10° 15' |
| D. | 10° 20' |
| Answer» D. 10° 20' | |
| 266. |
If a pitot tube is placed with its nose facing down stream, the liquid |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 267. |
The following equation for the viscosity, is suggested |
| A. | Bernoulli |
| B. | Newton |
| C. | Chezy |
| D. | Bezin |
| Answer» C. Chezy | |
| 268. |
Mach number is the ratio of inertia force to |
| A. | viscosity |
| B. | surface tension |
| C. | gravitational force |
| D. | elasticity. |
| Answer» E. | |
| 269. |
Which one of the following equation is applicable to unsteady flow in open channels : |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 270. |
Flow in pipes is turbulent if Reynold number is |
| A. | less than 2100 |
| B. | more than 3000 |
| C. | between 2100 and 3000 |
| D. | none of these. |
| Answer» C. between 2100 and 3000 | |
| 271. |
To ensure that water does not rise more than 100 cm above the crest, for a discharge of 5.00 m³/sec, the length of water will be |
| A. | 2.48 m |
| B. | 2.49 m |
| C. | 2.50 m |
| D. | 2.51 m. |
| Answer» C. 2.50 m | |
| 272. |
The velocity of the fluid particle at the centre of the pipe section, is |
| A. | minimum |
| B. | maximum |
| C. | equal throughout |
| D. | none of these. |
| Answer» C. equal throughout | |
| 273. |
Total energy line is |
| A. | pressure head |
| B. | datum head |
| C. | kinetic head |
| D. | All the above. |
| Answer» E. | |
| 274. |
Mass density of liquid (ρ) is given by |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 275. |
In case of laminar flow through a circular pipe, |
| A. | momentum correction factor is 1.33 |
| B. | energy correction factor is 2.00 |
| C. | both (a) and (b) |
| D. | Neither (a) nor (b). |
| Answer» D. Neither (a) nor (b). | |
| 276. |
Cavitation is caused by |
| A. | Low pressure |
| B. | High pressure |
| C. | Low velocity |
| D. | High velocity |
| Answer» B. High pressure | |
| 277. |
The discharge through a 100 mm diameter external mouth piece fitted to the side of a large vessel is 0.05948 m³/s. The head over the mouth piece is |
| A. | 2 m |
| B. | 2.5 m |
| C. | 3.0 m |
| D. | 4.0 m. |
| Answer» E. | |
| 278. |
If D is the diameter of a pipe of length L and f is the coefficient of friction of pipe then diameter of the nozzle d is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 279. |
The ratio of inertia force of a flowing fluid and the viscous force of the liquid is called : |
| A. | Renold's number |
| B. | Froude's number |
| C. | Euler's number |
| D. | Weber's number. |
| Answer» B. Froude's number | |
| 280. |
In a fluid flow a particle may posses |
| A. | elevation energy |
| B. | kinetic energy |
| C. | pressure energy |
| D. | all the above. |
| Answer» E. | |
| 281. |
In a short cylindercial external mouthpiece, the venacontracta occurs at a distance from the outlet of orifice equal to |
| A. | diameter of the orifice |
| B. | one-fourth the diameter of the orifice |
| C. | one-third the diameter of the orifice |
| D. | two-third the diameter of the orifice |
| Answer» C. one-third the diameter of the orifice | |
| 282. |
The mouth piece shown in the below figure is generally known as |
| A. | Internal mouth piece |
| B. | Re-entrant mouth piece |
| C. | Borda's mouth piece |
| D. | All the above |
| Answer» E. | |
| 283. |
Product of Renold number, Froud's number and Mach number is : |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 284. |
Time of emptying liquid from a hemispherical vessel through an orifice at its bottom, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» E. | |
| 285. |
Critical depth (h) of a channel, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» B. B | |
| 286. |
The time required to close a valve gradually is (where L is the length of pipe and C = velocity of pressure wave) |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 287. |
The moment of inertia of a floating body along its longitudinal axis and the volume of water displaced by it are I and V respectively. The height of the metacentre above centre of buoyancy of the body, is |
| A. | A |
| B. | B |
| C. | C |
| D. | D |
| Answer» D. D | |
| 288. |
THE_SUPERFICIAL_VELOCITY_IN_A_STRATIFIED_BED_IS_EQUAL_TO?$ |
| A. | Terminal settling velocity |
| B. | Terminal settling velocity * porosity |
| C. | Terminal settling velocity * (porosity) <sup>2</sup> |
| D. | Terminal settling velocity * (porosity) <sup>4.5</sup> |
| Answer» E. | |
| 289. |
WHEN_DOES_THE_PARTICLE_BECOME_SUSPENDED_IN_EXPANDED_BED??$ |
| A. | When superficial velocity is greater than critical velocity |
| B. | When superficial velocity is less than critical velocity |
| C. | When superficial velocity is equal to critical velocity |
| D. | When superficial velocity is constant |
| Answer» D. When superficial velocity is constant | |
| 290. |
Carmen-Kozney equation has been derived using which of the following equation?$ |
| A. | Cole brook white equation |
| B. | Bernoulli equation |
| C. | Darcy Weisbach equation |
| D. | Swamee jain equation |
| Answer» D. Swamee jain equation | |
| 291. |
State whether the following statement is true or fals? |
| A. | |
| B. | True |
| Answer» B. True | |
| 292. |
The value of Reynolds number R is 1.5. The coefficient of drag is |
| A. | 8 |
| B. | 10 |
| C. | 12 |
| D. | 16 |
| Answer» E. | |
| 293. |
When the Reynolds number is greater than 1.9 but less than 500, the coefficient of drag CD is |
| A. | CD = 24/R |
| B. | CD = R/24 |
| C. | CD = 18.5/R<sup>0.6</sup> |
| D. | CD = R<sup>0.6</sup>/18.5 |
| Answer» D. CD = R<sup>0.6</sup>/18.5 | |
| 294. |
Which of the following represents the correct relation between dimensionless friction factor f and Reynolds number? |
| A. | f = 150* ((1-e) /R<sup>2</sup>) +1.75 |
| B. | f = 150* ((1-e) /R) +1.75 |
| C. | f = 150* ((1-e) /R<sup>3</sup>) +1.75 |
| D. | f = 150* ((1-e<sup>2</sup>) /R) +1.75 |
| Answer» C. f = 150* ((1-e) /R<sup>3</sup>) +1.75 | |
| 295. |
Which of the following is the expression of the Carmen equation where symbols have their usual meanings? |
| A. | hf = f* (L/(s *d)) * ((1-e)/e<sup>3</sup>) * (v<sup>2</sup>/g) |
| B. | hf = f* (L/(s *d)) * ((1-e)/e<sup>3</sup>) * (v/g) |
| C. | hf = f* (L/(s *d)) * ((1-e)/e) * (v<sup>2</sup>/g) |
| D. | hf = f* (L/(s *d)) * ((1-e)/e<sup>2</sup>) * (v<sup>2</sup>/g) |
| Answer» B. hf = f* (L/(s *d)) * ((1-e)/e<sup>3</sup>) * (v/g) | |
| 296. |
Which of the following has highest shape factor as stated by Carmen? |
| A. | Ottawa sand |
| B. | Pulverized coal |
| C. | Rounded coal |
| D. | Angular sand |
| Answer» B. Pulverized coal | |
| 297. |
The head loss through the bed of solids of the filter can be determined by |
| A. | Carmen-Kozney equation |
| B. | Rose equation |
| C. | Carmen-Kozney and Rose equation |
| D. | Charles equation |
| Answer» D. Charles equation | |