For wave action in dams, the maximum height of freeboard is generally taken to be equal to (where hw is height of wave.)

As compared to gravity dams, earthen dams

A

are costlier

B

are less susceptible to failure

C

require sound rock foundations

D

require less skilled labour

If ‘Hs’ is the significant wave height, then the average wave height and highest wave height respectively are given by

A

0.6 Hs and 1.67 Hs

B

0.6 Hs and 1.87 Hs

C

1.27 Hs and 1.87 Hs

D

1.27 Hs and 1.67 Hs

If H is the height of the wave expected, then the height of the breakwater is generally taken as

A

1.2 H to 1.25 H above the datum

B

1.2 H to 1.25 H above the low water level

C

1.2 H to 1.25 H above the high water level

D

1.2 H to 1.25 H above the mean sea level

For heavy embankments and dams, of height h, the depth of exploration of soil should not be less than

A

$$\frac{{\text{h}}}{4}$$

B

$$\frac{{\text{h}}}{2}$$

C

h

D

2h

A shaft of diameter D is subjected to a twisting moment (T) and a bending moment (M). If the maximum bending stress is equal to maximum shear stress developed, then M is equal to

A

$$\frac{{\text{T}}}{2}$$

B

T

C

2T

D

4T

When two shafts of same length, one of which is hollow, transmit equal torques and have equal maximum stress, then they should have equal

A

Polar moment of inertia

B

Polar modulus

C

Diameter

D

Angle of twist

Three forces acting on a rigid body are represented in magnitude, direction and line of action by the three sides of a triangle taken in order. The forces are equivalent to a couple whose moment is equal to

A

Area of the triangle

B

Twice the area of the triangle

C

Half the area of the triangle

D

None of these

Which of the following cements is suitable for use in massive concrete structures such as large dams?

A

Ordinary Portland cement

B

Low heat cement

C

Rapid hardening cement

D

Sulphate resisting cement

The first floating solar power plant in Uttar Pradesh is built on which of the following dams?

A

Matatila Dam

B

Rajghat Dam

C

Dhanraul Dam

D

Rihand Dam

Which of the following dams has generations of power more than irrigation as its main purpose?

A

Gandhi Sagar

B

Hirakud

C

Periyar

D

Tungabhadra

For wave action in dams, the maximum height of freeboard is generally taken to be equal to (where hw is height of wave.)

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