# A borrow pit soil has a dry density of 17 kN/m3. How many cubic meters of this soil will be required to construct an embankment of 100 m3 volume with a dry density of 16 kN/m3

1.  94 m3

2.  106 m3

3.  100 m3

4.  90 m3

4

90 m3

Explanation :
No Explanation available for this question

# If the pump head is 15m, discharge is 0.464 m 3/s and the motor speed is 1440 rpm at rated condition, the specific-speed of the pump is about

1.  4

2.  26

3.  38

4.  1440

4

38

Explanation :
No Explanation available for this question

# The BOD removal efficiency, in percentage, during primary treatment, under normal conditions is about

1.  65%

2.  85%

3.  30%

4.  Zero

4

65\%

Explanation :
No Explanation available for this question

# Use of coagulants such as alum

1.  results in reduction of pH of the treated water

2.  results in increase of pH of the treated water

3.  results in no change in pH of the treated water

4.  may cause an increase or decrease of pH of the treated water

4

may cause an increase or decrease of pH of the treated water

Explanation :
No Explanation available for this question

# The disinfection efficiency of chlorine in water treatment

1.  is not dependent on pH value

2.  is increase by increased pH value

3.  remains constant at all pH values

4.  is reduced by increased pH value

4

is not dependent on pH value

Explanation :
No Explanation available for this question

# The limit of the function f(x) = [(1- a4 )/ x4] as x→∞ is given by

1.  1

2.  exp[- a4]

3.  ∞

4.  zero

4

Explanation :
No Explanation available for this question

# The maxima and minima of the function f(x) = 2x3 - 15x2 + 36x + 10 occur, respectively, at

1.  X = 3 and X = 2

2.  X = 1 and X = 3

3.  X = 2 and X = 3

4.  X = 3 and X = 4

4

X = 3 and X = 4

Explanation :
No Explanation available for this question

# The following two statements are made with reference to the planar truss shown below I. The truss is statically determinate II. The truss is kinematically determinate With reference to the above statements, which of the following applies

1.  Both statements are true

2.  Both statements are false

3.  II is true but I false

4.  I is true but II is false

4

Both statements are false

Explanation :
No Explanation available for this question

# The ultimate bearing capacity of a soil is 300 kN/m2.The depth of foundation is 1m and unit weight soil is 20 kN/m3. Choosing a factor of safety of 2.5, the net safe bearing capacity

1.  100 kN/m2

2.  80 kN/m2

3.  112 kN/m2

4.  100.5 kN/m2

4

100.5 kN/m2

Explanation :
No Explanation available for this question

1.  2 c tan a

2.  2 c cot a

3.  - 2 c tan a

4.  - 2 c tan a

4