MCQ
3101. The maximum water cement ratio for durable concrete is-
0.2
0.4
0.6
0.8
3102. A continuous beam is one which is-
fixed at both ends
fixed at one end and free at the other end
extending beyond the supports
supported on more than two supports
3103. The top diameter and height of the mould used for slump test respectively-
100 mm, 200 mm, 300 mm
200 mm, 100 mm, 300 mm
100 mm, 300 mm, 200 mm
200 mm, 300 mm, 100 mm
3104. The frictional resistance of a pope varies approximately with- of the liquid.
pressure
velocity
square of velocity
cube of velocity
3105. A cantilever retaining wall should not be used for heights more than
4m
6m
8m
10m
3106. The top of the ground on which the foundation of road is called-
sub-grade
soiling
wearing later
base
3107. The neutral axis of a beam is subjected to-
zero
maximum tensile
minimum tensile
maximum compressive
3108. The contour lines can cross one another on map only in case of-
a vertical cliff
an overhanging cliff
a ridge
a valley
3109. When a beam is subjected to bending moment the stress at any point is- the distance of the point from the neutral axis?
equal to
directly proportional to
inversely proportional to
independent of
3110. A long column is one whose ratio of effective length to its least internal dimension exceeds-
5
10
12
20
3111. The continuous strain, which the concrete undergoes due to application of external loads, is called-
workability
bleeding
segregation
creep
3112. For reinforced cement concrete lintels and slabs the nominal size of coarse aggregate should not exceed-
10 mm
15 mm
20 mm
40 mm
3113. A fixed point of reference of known elevation is called-
change cliff
station point
bench mark
datum
3114. The number of bags of cement required per cubic meter of 1:1.5:3 approximately. concrete will be
3 to 4
4 to 5
5 to 6
6 to 8
3115. The hydraulic mean depth or the hydraulic radius is the ratio of-
area of flow and wetted perimeter
wetted perimeter and the diameter of the pope
velocity of flow and area of flow
none of these
3116. The under weight of hard rock is-
2400 kg/m³
2500 kg/m³
2600 kg/m³
2700 kg/m³
3117. The spacing of vertical stirrups in a rectangular beam is-
maximum near the supports
minimum near the supports
maximum near the center
minimum near the center
3118. The vertical depth for a channel is given by (q=unit discharge through the channel)
(q/g)1/2
(q²/g
(q³/g) 1/4
none of these
3119. The thickness of slab not be less then
100 mm
125 mm
200 mm
none of these
3120. At the neutral axis of a beam, the shear stress is-
zero
minimum
maximum
infinity