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Concrete Technology
See What Others Are Saying!
Question
The minimum percentage of chemical ingredient of cement is that of
Options
A. magnesium oxide
B. iron oxide
C. alumina
D. lime
E. silica.
Correct Answer
magnesium oxide
More questions
1. Accidental or compensating errors of length
L
are proportional to
Options
A.
L
B.
L
C.
D. 1/
L
.
Show Answer
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Discuss
Correct Answer:
L
2. Most economical section of a circular channel for maximum discharge
Options
A. depth of water = 0.95 diameter of circular section
B. hydraulic mean depth = 0.286 diameter of circular section
C. wetted perimeter = 2.6 diameter of circular section
D. wetted perimeter = 2.83 depth of water
E. all the above.
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Correct Answer: all the above.
3. If the atmospheric pressure on the surface of an oil tank (sp. gr. 0.8) is 0.1 kg/cm
2
, the pressure at a depth of 2.5 m, is
Options
A. 1 metre of water
B. 2 metres of water
C. 3 metres of water
D. 3.5 metres of water
E. 4.0 metres of water.
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Correct Answer: 3 metres of water
4. If a gauge is installed perpendicular to the slope, its measurement is reduced by multiplying
Options
A. sine of the angle of inclination with vertical
B. cosine of the angle of inclination with vertical
C. tangent of the angle of inclination with vertical
D. calibration coefficient of the gauge.
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Correct Answer: cosine of the angle of inclination with vertical
5. In stone masonry, if stones are so placed that their layers are parallel to the direction of load, they
Options
A. split easily
B. are affected by moisture
C. both (a) and (b)
D. none of these.
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Correct Answer: both (a) and (b)
6. The spread between the point and splice rails at a distance of 4.25 rn is 50 cm. The size of the crossing is
Options
A. 1 in 6
B. 1 in
C. 1 in 12
D. 1 in 16
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Correct Answer: 1 in
7. Pick up the correct statement from the following :
Options
A. Rain which is intercepted by buildings, vegetations and other objects, is generally known as rainfall interception
B. The difference between the total rainfall and intercepted rainfall, is generally called ground rainfall
C. When rainfall exceeds the interception rainfall, water reaches the ground and infiltration starts
D. The maximum rate of absorbing water by the soil in any given condition, is known as infiltration capacity
E. All the above.
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Correct Answer: All the above.
8. The deficiency in rain catch due to vertical acceleration of air forced upward over the gauge, is
Options
A. greater for heavy rain
B. greater for lighter rain
C. greater for large drops
D. lesser for small rain drops.
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Correct Answer: greater for lighter rain
9. Pick up the correct statement from the following :
Options
A. mistakes arise from inattention, inexperience or carelessness
B. systematic errors persist and have regular effects in the survey performances
C. accidental errors occur inspite of every precaution is taken
D. all the above.
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Correct Answer: all the above.
10. If
s
is the potential infiltration,
P
is rainfall in cm in a drainage of a soil with fair pasture cover, the direct run off
Q
in cm is given by
Options
A.
B.
C.
D.
Show Answer
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Discuss
Correct Answer:
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