MCQ
1. The detention period in a septic tank is assumed
20 minutes
25 minutes
30 minutes
40 minutes
2. The order of booking dimensions is
Length, breadth, height
Breadth, length, height
Height, breadth, length
None of these
3. Pick up the incorrect statement from the following:
Dimensions are measured to the nearest 0.01 m
Areas are measured to the nearest 0.01 sq.m Book
Cubic contents are measured to the nearest 0.1 cum
Weights are measured to the nearest 0.001 tonnes
4. The minimum width of a septic tank is taken
70 cm
75 cm
80 cm
90 cm
5. Pick up the incorrect statement regarding a master trap from the following:
It is provided in between the lower end of the house drain and the street sewer
It is provided a cleaning eye at the top of the trap
The mica flap valve which opens inwards only, is fitted at the top of the inlet pipe
The water seal is less than that of ordinary traps
6. The cross-sectional area of the embankment of a canal fully in embankment in the given figure is
½ (+) h
(+) h+sb²
(+)+2sh
2 [(+) (b+sh²)]
7. The inspection pit or chamber is a manhole provided in a base drainage system
At every change of direction
At every change of gradient
At every 30 m intervals
All the above
8. The ground surface slopes 1 in 50 along a proposed railway embankment 150 m in length. The height of the embankment at zero chainage is 0.5 m, the width is 11 m and side slopes 2:1. If the falling gradient of the embankment is 1 in 150, the quantity of the earthwork calculated by Prismoidal formula, is
3250 m3
3225 m3
3275 m3
3300 m3
9. Pick up the item of work not included in the plinth area estimate
Wall thickness
Room area
W.C. area
Courtyard area
10. Pick up the incorrect statement from the following:
The built up covered area at the floor level of any storey of a building is called plinth area
The usable covered area of the rooms of any storey of a building is called carpet area
The carpet area of a building along with area of its kitchen, pantry, store, lavatory, bath room and glazed veranda, is called floor area
None of these
11. If Bis the width of formation, d is the height of the embankment, side slope S: 1, for a highway with no transverse slope, the area of cross-section is
B+d+Sd
Bd +Sd2
Bxd-Sd1/2
½ (Bd +Sd2)
12. S: 1 and length is
d x d x s
d 2 x (ds)2]
L.D 1+s2)
2 L.D 1+s2)
13. The 'centre line method' is specially adopted for estimating
Circular buildings
Hexagonal buildings
Octagonal buildings
All the above
14. In case of laying gullies, siphons, intercepting traps, the cost includes
Setting and laying
Bed concreting
Connection to drains
All of these
15. The diameter of a domestic sewer pipe laid at gradient 1 in 100 is recommended
100 mm
150 mm
200 mm
175 mm
16. The unit of measurement is per quintal for the following:
Collapsible gates with rails
Rolling shutters
Expanded metal wire netting
M.S. reinforcement of R.C.C. works
17. The correct Prismoidal formula for volume is
D [first area + last area + Even area + 2 odd areas)
D/3 [first area + last area + 4 Even area + 2 odd areas]
D/3 [first area last area + 2 Even area + 4 odd areas]
D/6 [first area + odd areas]
18. Berms are provided in canals if these are
Fully in excavation
Partly in excavation and partly in embankment
Fully in embankment
All the above
19. The slope of the outlet of 'P trap' below the horizontal is kept
8°
10°
12°
14°
20. The weight of an item is measured correct to nearest
0.25 kg
0.50 kg
0.75 kg
1.00 kg