MCQs of Unit 2 : Deign of drainage (Railway and Airport Engineering - 3170619)

Railway and Airport Engineering (3170619) MCQs

MCQs of Unit 2 : Deign of drainage

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Basic requirements of an airport drainage (1) Rapid drainage with sufficient capacity (2) Structural strength and safety (3) Capability of expansion (4) All above

(a)	(1) and (2)
(b)	(1) and (3)
(c)	(2) and (3)
(d)	(1), (2), (3) and (4)

Is a graphical representation of the amount of earth excavation and embankment involved in a project and the manner in which the earth is to be moved

(a)	Mass curve
(b)	Mass haul curve
(c)	Lead and lift
(d)	None

Airport drainage system serves functions

(a)	Removal of surface runoff from airfield
(b)	Interception and diversion of surface and ground water flow
(c)	Lowering of subsurface water level
(d)	All the above

The runoff can be estimate by (A) Q= CIA (B) Q=AR^2/3S^1/2/n

(a)	A-true
(b)	B-True
(c)	A and B true
(d)	Both wrong

The granular material which is used as a back fill in the trenches where sub drains are placed

(a)	Filter media
(b)	Filter paper
(c)	Filteration
(d)	Flocculation

Principally to prevent the scouring in drain the minimum mean velocity shall be

(a)	7.5 m/sec
(b)	0.57 m/sec
(c)	0.75 m/sec
(d)	0.075 m/sec

The minimum diameter of storm water shall be not less than

(a)	45 cm
(b)	30 cm
(c)	15 cm
(d)	25 cm

In a ponding condition of drainage system the inlets are kept @ ___________m to _______m center to center

(a)	30m to 50 m
(b)	100 to 200 m
(c)	40m to 100m
(d)	60 m to 120 m

In a drainage design the pipe diameter and slope can be calculated using (A) Q=CIA (B) Q=A*R^2/3*S^1/2/n

(a)	A only
(b)	B only
(c)	A and B both
(d)	None

10.

Providing temporary storage of runoff water prior to its entry in the underground system is known as_____________

(a)	Collection
(b)	Ponding
(c)	Interception
(d)	None

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