Explore topic-wise MCQs in Surveying.

This section includes 146 Mcqs, each offering curated multiple-choice questions to sharpen your Surveying knowledge and support exam preparation. Choose a topic below to get started.

51.

Pick up the incorrect statement from the following. Culturable commanded area is the gross area of an irrigation canal system less

A. populated area
B. alkaline area
C. forest area
D. fallow land.
Answer» E.
Discussion
52.

Groynes are generally built

A. perpendicular to the bank
B. inclined up stream up to 30°
C. inclined down stream upto 30°
D. all the above.
Answer» C. inclined down stream upto 30°
Discussion
53.

If A is the area of the surface, x is the depth of its C.G. from the surface of the water and ω is the density of water, then

A. total pressure on the surface is equal to ω x
B. depth of the point at which total pressure acts is equal to its moment of inertia divided by A x
C. depth of the centre of pressure is 2/3H vertically below the surface
D. all the above.
Answer» E.
Discussion
54.

The width of a meander belt is the transverse distance between

A. apex point of one curve and apex point of the reserve curve
B. apex point and the crossing
C. two banks of meandering river
D. none of these.
Answer» B. apex point and the crossing
Discussion
55.

Borrow pits should preferably be located in

A. field on the left side of the canal
B. field on the right side of the canal
C. fields on both sides of the canal
D. central half width of the section of the canal.
Answer» E.
Discussion
56.

Effective precipitation for a crop may be defined as

A. total precipitation minus the loss due to evaporation
B. total precipitation minus the loss due to infiltration
C. total precipitation during the crop period
D. available water stored in soil within root zone of the crop.
Answer» E.
Discussion
57.

Bed bars in a canal are provided

A. to watch the general behaviour of canal
B. to measure the discharge
C. to raise the supply level
D. to control the silting
Answer» B. to measure the discharge
Discussion
58.

A water-logged land is found suitable for cultivation due to

A. ease of tillage for preparation of the field for optimum condition of germination
B. absence of aeration of soil from root zone of the plant
C. regular supply of water to plants from the water table by capillary action
D. none of these.
Answer» E.
Discussion
59.

Canals taken off from ice-fed perennial rivers, are known

A. permanent canals
B. ridge canals
C. perennial canals
D. inundation canals
Answer» D. inundation canals
Discussion
60.

The velocity of drainage water in the barrels of a syphon-aqueduct, is normally limited to

A. 1 to 2 m per second
B. 2 to 3 m per second
C. 3 to 4 m per second
D. 4 to 5 m per second.
Answer» C. 3 to 4 m per second
Discussion
61.

The Lacey's regime velocity is proportional to

A. R^1/2 S^3/4
B. Q^3/4 S^1/3
C. R^3/4 S^1/3
D. R^2/3 S^1/2
Answer» D. R^2/3 S^1/2
Discussion
62.

The sensitivity of a rigid module, is

A. 2.00
B. 1.50
C. 1.00
D. zero
Answer» E.
Discussion
63.

In case of a trapezoidal notch fall

A. top width of the notch is kept between 3/4 th of full water depth above the sill of the notch
B. top length of the piers should not be less than their thickness
C. splay up stream from the notch section is 45°
D. all the above.
Answer» E.
Discussion
64.

Pick up the correct sequence of the part of a canal system from the following

A. Head work-distributary-branch canal-minor
B. Head works-main canal-branch canal-dis-tributary-minor
C. Head works-main canal-branch canal-minor-distributary
D. Heads works-branch canal-main canal distributary, minor.
Answer» C. Head works-main canal-branch canal-minor-distributary
Discussion
65.

A river is said to be of

A. aggrading type if it builds up its bed to a certain slope
B. degrading type if it cuts its bed to a certain slope
C. meandering type if it flows in sinuous curve
D. all the above.
Answer» E.
Discussion
66.

The ratio of the rate of change of discharge of an outlet and parent channel, is known as

A. efficiency
B. sensitivity
C. flexibility
D. modular limit.
Answer» D. modular limit.
Discussion
67.

An outlet is said to be proportional if its flexibility, is

A. zero
B. less than one
C. more than one
D. one
Answer» E.
Discussion
68.

Garnett's diagrams are used for graphical solution of design equations of a canal by

A. Lacey's theory
B. Kennedy's theory
C. Gibb's theory
D. Lindlay theory.
Answer» C. Gibb's theory
Discussion
69.

For a unique design of a channel by Kennedy's theory

A. its breadth must only be known
B. its depth must only be known
C. its breadth and depth ratio must only be known
D. all the above.
Answer» D. all the above.
Discussion
70.

According to Khosla, the exist gradient of surface flow

A. depends upon the b/d ratio
B. is independent of the b/d ratio
C. is independent of the depths of d/s cut off walls
D. none of these.
Answer» B. is independent of the b/d ratio
Discussion
71.

The consumptive use of water for a crop

A. is measured as the volume of water per unit area
B. is measured as depth of water on irrigated area
C. may be supplied partly by precipitation and partly by irrigation
D. all the above.
Answer» E.
Discussion
72.

The top of the capillary zone

A. lies below the water table at every point
B. lies above the water table at every point
C. coincides the water table at every point
D. none of these.
Answer» C. coincides the water table at every point
Discussion
73.

In a barrage, the crest level is kept

A. low with large gates
B. high with large gates
C. high with no gates
D. low with no gates.
Answer» B. high with large gates
Discussion
74.

Solution of following Laplacian equation in three dimensions of water in a syphon, is done by

A. analytical method
B. Khosla's method
C. method of relaxation
D. Unwin's method
Answer» D. Unwin's method
Discussion
75.

Trial procedure of canal design by Kennedy's theory is based upon the equation

A. A
B. B
C. C
D. D
Answer» E.
Discussion
76.

If V0 is the critical velocity of a channel, its silt transporting power, according to Kennedy, is proportional to

A. A
B. B
C. C
D. D
Answer» D. D
Discussion
77.

If Δ is the depth of water in metres, B is the number of days of base period and D is the duty in hactare/cumec, the relationship which holds good, is

A. A
B. B
C. C
D. D
Answer» E.
Discussion
78.

V and R are the regime mean velocity and hydraulic mean depth respectively in metres. Lacey's silt factor f is

A. A
B. B
C. C
D. D
Answer» D. D
Discussion
79.

If Dc is the critical depth, D is the depth of water down stream and HL is the total head loss at the cistern of a vertical fall, the depth x of the cistern below the bed level down stream suggested by Blench, is

A. A
B. B
C. C
D. D
Answer» C. C
Discussion
80.

If D1 and D2 are depths of water upstream and down stream of a hydraulic jump, the loss of head at the jump, is

A. A
B. B
C. C
D. D
Answer» E.
Discussion
81.

According to Kennedy, the critical velocity (V0) in metres in a channel is the mean velocity which keeps the channel free from silting or scouring. Its value is given by (where m is critical velocity ratio and D is the depth of the channel).

A. A
B. B
C. C
D. D
Answer» C. C
Discussion
82.

The sinuosity of a meander is the ratio of

A. meander length and the width of meander
B. meander length and half width of the river
C. curved length and the straight distance
D. none of these.
Answer» D. none of these.
Discussion
83.

For designing the venturi head,

A. width of the throat should not be less than one-third of the bed width of main canal
B. width of the throat should not be less than the width obtained from the formula B = Q / 1.2d^3/2, where d is the difference in levels of F.S.L. and sill
C. minimum throat width should not be less than 60 cm
D. all the above.
Answer» E.
Discussion
84.

For the design of major hydraulic structures on the canals, the method generally preferred to, is based on

A. Bligh's theory
B. Electrical analogy method
C. The relaxation method
D. Khosla's method of independent variables.
Answer» E.
Discussion
85.

The measure to remove water logging of land, is

A. to reduce percolation from canals and water courses
B. to increase outflow from the ground water reservoir
C. both (a) and (b)
D. neither (a) nor (b)
Answer» D. neither (a) nor (b)
Discussion
86.

If the height of the hydraulic gradient line above the floor of thickness t is h and the specific gravity of the material of the floor is G, the minimum thickness t of the floor down stream of the crestwall, is given by the equation

A. A
B. B
C. C
D. D
Answer» D. D
Discussion
87.

F.S.L. of a canal at its head with respect to parent channel is kept

A. at the same level
B. 15 cm lower
C. 15 cm higher
D. none of these.
Answer» C. 15 cm higher
Discussion
88.

The difference in level between the top of a bank and supply level in a canal, is called

A. berm
B. free board
C. height of bank
D. none of these.
Answer» C. height of bank
Discussion
89.

The top soil of a water logged field becomes more alkaline and infertile if its pH value is

A. 6
B. 8
C. 9
D. 11
Answer» E.
Discussion
90.

For the conditions enumerated to provide a crossing at C1 You will probably provide

A. an aqueduct
B. a super-passage
C. a syphon aqueduct
D. none of these.
Answer» C. a syphon aqueduct
Discussion
91.

When a canal flowing under pressure is carried below a natural drainage such that its F.S.L. does not touch the underside of the supporting structure, the structure so provided, is called

A. syphon
B. aqueduct
C. super passage
D. syphon-aqueduct.
Answer» D. syphon-aqueduct.
Discussion
92.

The main function of a diversion head works of a canal from a river, is

A. to remove silt
B. to control floods
C. to store water
D. to raise water level
Answer» E.
Discussion
93.

Retrogression of the bed level of a river downstream a weir, occurs due to

A. heavy impact of water
B. increase of the bed level
C. less percentage of silt
D. soft soil strata.
Answer» D. soft soil strata.
Discussion
94.

Bligh's theory of seepage assumes

A. equal weightage to the horizontal and vertical creep
B. more weightage to horizontal creep than vertical creep
C. less weightage to horizontal creep than vertical creep
D. loss of head follows the sine curve.
Answer» B. more weightage to horizontal creep than vertical creep
Discussion
95.

Process of meandering is due to

A. sediment load of streams
B. discharge and hydraulic properties of streams
C. relative erodibility of the bed and banks
D. all the above.
Answer» E.
Discussion
96.

If D is the depth of water upstream of the throat above its sill, B is the width of the throat, to achieve critical flow in an open venturi flume, the theoretical maximum flow Q, is

A. Q = 1.71 BD^1/2
B. Q = 1.71 BD
C. Q = 1.71 BD^3/2
D. Q = 1/71 BD^2/3
Answer» D. Q = 1/71 BD^2/3
Discussion
97.

If d1 is the depth of cutting, d2 is the height of the bank from bed level r2 : 1 and r1 : 1 are the slopes in filling and cutting respectively, the horizontal distance n between the bed and bank, is

A. x = r1 d1
B. x = r2 d2
C. x = d1 / r1
D. x = d2 / r2
Answer» C. x = d1 / r1
Discussion
98.

If the straight sides of a triangular section of a lined canal with circular bottom of radius R, make an angle θ with horizontal, the perimeter of the canal is

A. R(θ + tan θ)
B. 2R(θ + tan θ)
C. R(θ + cos θ)
D. 2R(θ + cos θ)
Answer» E.
Discussion
99.

Useful soil moisture for plant growth, is

A. capillary water
B. gravity water
C. hygroscopic water
D. chemical water
Answer» B. gravity water
Discussion
100.

A fall in a canal bed is generally provided, if

A. ground slope exceeds the designed bed slope
B. designed bed slope exceeds the ground slope
C. ground slope is practically the same as the designed bed slope
D. none of these.
Answer» B. designed bed slope exceeds the ground slope
Discussion