A town has an existing horizontal flow sedimentation tank with an overflow rate of 17m 3/day/m 2, and it is desirable to remove particles that have settling velocity of 0.1mm/sec. Assuming the tank is an ideal sedimentation tank, the percentage of particles removal is approximately equal to

1.  30%

2.  50%

3.  70%

4.  90%

View Answer  
4
Correct Answer :

50\%


Explanation :
No Explanation available for this question

A valley curve has a descending gradient of 1 in 40 followed by an ascending gradient of 1 in 50. The length of the valley curve required for a design speed of 80 km/hour for comfort condition is

1.  199 m

2.  116 m

3.  58 m

4.  37 m

View Answer  
4
Correct Answer :

58 m


Explanation :
No Explanation available for this question

In a certain situation ,waste water discharged into a river,mixes with the river water instantaneously and completely.Following is the data available: Waste water : DO=2.00mg/L Discharge rate-1.10m3/s River water : DO=8.3 mg/L Flow rate=8.70 m3/s Temperature=200C Initial amount of DO in the mixture of waste and river shall be:

1.  5.3mg/L

2.  6.5mg/L

3.  7.6mg/L

4.  8.4mg/L

View Answer  
4
Correct Answer :

7.6mg/L


Explanation :
No Explanation available for this question

Limit of the function 

1.  1/2

2.  0

3.  infinity

4.  1

View Answer  
4
Correct Answer :

1


Explanation :
No Explanation available for this question

The function f(x)=ex is

1.  even

2.  odd

3.  Neither even nor odd

4.  none of the above

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4
Correct Answer :

odd


Explanation :
No Explanation available for this question

If A is any nxn matrix and k is a scalar,|KA|=α|A|,where a is

1.  kn

2.  nk

3.  kn

4.  n/k 

View Answer  
4
Correct Answer :

kn


Explanation :
No Explanation available for this question

A circular primary clarifier processes an average flow of 5005m3/d of municipal waste water.The overflow rate is 35m3/d .The diameter of clarifier shall be

1.  10.5m

2.  11.5m

3.  12.5m

4.  13.5m

View Answer  
4
Correct Answer :

13.5m


Explanation :
No Explanation available for this question

In reinforced concrete, pedestal is defined as compression member, whose effective length does not exceed its dimension by

1.  12 times

2.  3 times

3.  16 times

4.  8 times

View Answer  
4
Correct Answer :

3 times


Explanation :
No Explanation available for this question

The minimum area of tension reinforcement in a beam shall be greater than

1.  0.85bd/fy

2.  0.85fy/ bd

3.  0.04bd

4.  0.04bd/y

View Answer  
4
Correct Answer :

0.85bd/fy


Explanation :
No Explanation available for this question

A Road is having a horizontal curve of 400m radius on which a super-elevation of 0.07 is provided. The coefficient of lateral friction mobilized on the curve when a vehicle is travelling at 100kmph is:

1.  0.07

2.  0.13

3.  0.15

4.  0.4

View Answer  
4
Correct Answer :

0.13


Explanation :
No Explanation available for this question
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