Solved Example: 9079-01

The maximum height of a masonry dam of a triangular section whose base width is b and specific gravity s is: (SSC JE CE Paper II Jan 2018 Morning)

A. b$\sqrt{s}$

B. b$\times$ s

C. $\sqrt{bs}$

D. s $\sqrt{b}$

Correct Answer: A

Solved Example: 9079-02

To dissipate energy a fall is provided in a canal. A fall which has gradual convex and concave curves for smooth transition of water and to reduce disturbance and impact is a: (SSC JE CE Oct 2020 Morning)

A. Ogee fall

B. Stepped fall

C. Rapid fall

D. Notch fall

Correct Answer: A

Solved Example: 9079-03

The 'surcharge storage' in a dam reservoir is the volume of water stored between: (SSC JE CE Mar 2017 Evening)

A. Minimum and maximum reservoir levels

B. Minimum and normal reservoir levels

C. Normal and maximum reservoir levels

D. None of these

Correct Answer: C

Solved Example: 9079-04

The storage of water below the bottom of the lowest sluice way in a reservoir is called: (SSC JE CE Oct 2020 Morning)

A. Dead storage

B. Surcharge storage

C. Live storage

D. Useful storage

Correct Answer: A

Solved Example: 9079-05

The flood absorption capacity of a reservoir is: (SSC JE CE Oct 2020 Morning)

A. The same as the dead storage

B. Some percentage of the storage capacity of dam

C. The water it can absorb through seepage

D. The storage between FSL and MWL

Correct Answer: D

Solved Example: 9079-06

_________ is an example of a non-rigid dam. (MPSC AE Civil Mains 2017 Paper II)

A. Arch dam

B. Timber dam

C. Steel dam

D. Rockfill dam

Correct Answer: D

Solved Example: 9079-07

The silt load in the stream does not depend upon: (MPSC AE Civil Mains 2018 Paper II)

A. Nature of the soil in the catchment area

B. Topography of the catchment area

C. Intensity of rainfall

D. Alignment of dam

Correct Answer: D

Solved Example: 9080-01

To estimate the magnitude of a flood peak (Q$_p$) by the formula \[{Q_P} = \frac{{124A}}{{\sqrt {A + 10.4} }}\] where A = catchment area in km$^2$ . This formula is termed as: (UPPCL JE CE Paper II 2014)

A. Dicken's formula

B. Inglis formula

C. Ryves formula

D. Rational formula

Correct Answer: B

Solved Example: 9141-01

A 6-hour rainfall of 6 cm at a place A was found to have a return period of 40 years. The probability that a 6 hour rainfall of this or larger magnitude will occur at least once in 20 successive years is: (DFCCIL Executive Civil 2018)

A. 0.308

B. 0.015

C. 0.605

D. 0.397

Correct Answer: D

Solved Example: 9141-02

The probability of a 10-year flood to occur at least once in the next 5 years is: (ESE Civil 2014 Paper II)

A. 35%

B. 41%

C. 60%

D. 65%

Correct Answer: B

Solved Example: 9141-03

What is Probable Maximum Precipitation (PMP)? (KPSC AE 2017)

A. Projected precipitation for a 100 years return period

B. Upper limit of rainfall that is justified climatologically

C. Effective perceptible water

D. Maximum precipitation for all recorded storms

Correct Answer: B

Solved Example: 9141-04

The extent to which the inflow hydrograph gets modified due to the reservoir storage can be computed by a process known as: (MPSC AE Civil Mains 2017 Paper II)

A. River routing

B. Channel routing

C. S hydrograph

D. Flood routing or reservoir routing

Correct Answer: D

Solved Example: 9141-05

Hydrologic flood routing methods make use of: (CIL MT Civil 2020)

A. Both momentum and continuity equations

B. Energy equation only

C. Equation of continuity only

D. Equation of motion only

Correct Answer: C

Solved Example: 9141-06

The Flood discharge Q in cumecs (according to Dicken's formula) is given by: (RSMSSB JE Civil Diploma Oct 2016)

A. CA$^3$

B. CA$^{\frac{3}{4}}$

C. CA

D. CA$^{\frac{5}{6}}$

Correct Answer: B

Solved Example: 9141-07

Which of the following is used for channel flow routing? (BPSC AE Paper VI Civil Mar 2022)

A. Puls method

B. Modified Puls method

C. Goodrich method

D. Muskingum method

Correct Answer: D

Solved Example: 9081-01

The discharge passing over an ogee spillway, per unit length of its apex line is proportional to (Where H is head over the apex of its crest): (UPPSC AE Civil Paper II Dec 2020)

A. H

B. H$^2$

C. $\sqrt{H}$

D. H$^{1.5}$

Correct Answer: D

Solved Example: 9081-02

In case of non-availability of space due to topography, the most suitable spillway in this condition is: (MPSC AE Civil Mains 2018 Paper II)

A. Straight drop spillway

B. Chute spillway

C. Shaft spillway

D. Ogee spillway

Correct Answer: C