Irrigation Engineering (3170609) MCQs

MCQs of DIVERSION HEAD WORKS & STORAGE WORKS

Showing 41 to 49 out of 49 Questions
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41.

 The vertical downward earthquake acceleration av = 0.1g acting on a gravity dam will ________________________

(a)

 increase the resisting weight of the dam by 10%
(b)

decrease the resisting weight of the dam by 10%
(c)

increase the uplift by 10%
(d)

decrease the uplift by 10%
Answer:

Option (b)

42.

A gravity dam is subjected to hydrodynamic pressure caused by __________

(a)

the rising waves of the reservoir when a flood wave enters into it
(b)

the rising waves in the reservoir due to high winds
(c)

 the increase in water pressure momentarily caused by the horizontal earthquake acting towards the reservoir
(d)

the increase in water pressure momentarily caused by the horizontal earthquake acting towards the dam
Answer:

Option (c)

43.

 In a concrete gravity dam with a vertical upstream face the stabilising force is provided by the ___________________

(a)

weight of the dam
(b)

 the water supported against the upstream slope
(c)

 uplift pressure
(d)

water pressure at the tail end
Answer:

Option (a)

44.

What is the value of horizontal destabilizing force caused by the formation of waves in a storage reservoir having a fetch of 52 km due to high wind of 172 km/h?

(a)

30KN
(b)

60KN
(c)

130KN
(d)

180KN
Answer:

Option (d)

45.

The upward acceleration of dam due to seismic activity will ________________________

(a)

increase the base pressure
(b)

decrease the base pressure
(c)

not affect the effective weight of the dam
(d)

increase the horizontal dynamic force
Answer:

Option (a)

46.

What is the average value of acceleration that is sufficient for high dams in seismic zones?

(a)

 0.1g to 0.15g
(b)

 0.05g to 0.1g
(c)

 0.3gs
(d)

0.15g (where g is the acceleration due to gravity)
Answer:

Option (a)

47.

 What is Von Karman’s formula for hydrodynamic force (Pe)?

(a)

Pe = 0.726 pe H
(b)

 Pe = 0.424 pe H
(c)

Pe = 0.555 pe H
(d)

Pe = 0.555.Kh. Yw H2
Answer:

Option (d)

48.

On flatlands what type of canal alignment is used?

(a)

Side Slope Canal
(b)

Contour Canal
(c)

Watershed Canal
(d)

 Field Channel
Answer:

Option (c)

49.

Inflow and Outflow method is generally used to measure ____________

(a)

transpiration loss
(b)

seepage loss
(c)

evaporation loss
(d)

percolation loss
Answer:

Option (b)

Showing 41 to 49 out of 49 Questions
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