Civil Engineering - Online Test
Q1. The solution of the differential equation, for 
with initial conditions y(0) = 0 and 
is (u(t) denotes the unit step function),
with initial conditions y(0) = 0 and is (u(t) denotes the unit step function),
Answer : Option A
Explaination / Solution:
Q2. The tension (in kN) in a 10 m long cable, shown in the figure, neglecting its self-weight is
Answer : Option B
Explaination / Solution:
Taking moment about Q =0
R ×6−120 ×3 = 0 ⇒ RA =60kN
Taking moment about R = 0
R × 3 - H × 4 = 0
H = (3/4) × 60 = 45kN
Q3. The ordinates of a 2-h unit hydrograph at 1 hour intervals starting from time t = 0, are 0, 3, 8, 6, 3, 2 and 0 m3/s. Use trapezoidal rule for numerical integration, if required.
A storm of 6.6 cm occurs uniformly over the catchment in 3 hours. If Φ - index is
equal to 2 mm/h and base flow is 5 m3/s, what is the peak flow due to the storm?
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. Group I gives a list of devices and Group II gives the list of uses.
Group I Group II
P. Pitot tube 1. Measuring pressure in a pipe
Q. Manometer 2. Measuring velocity of low in a pipe
R. Venturimeter 3. Measuring air and gas velocity
S. Anemometer 4. Measuring discharge in a pipe
The correct match of Group I with Group II is
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. During a CBR test, the load sustained by a remolded soil specimen at 5.00
penetration is 50 kg. The CBR value of the soil will be
Answer : Option D
Explaination / Solution:
No Explaination.
Q6. The value of the integral 
is equal to
is equal to
Answer : Option D
Explaination / Solution:
Q7. A circular raft foundation of 20 m diameter and 1.6m thick is provided for a tank that applies
a bearing pressure of 110 kPa on sandy soil with Young’s modulus, E,’ = 30 MPa and
Poisson’s ration, υs = 0.3. The raft is made of concrete (EC = 30 GPa and υC = 0.15) .
Considering the raft as rigid, the elastic settlement (in mm) is
Answer : Option B
Explaination / Solution:
Elastic settlement of rigid footing
Q8. Anaerobically treated effluent has MPN of total coliform as 106 / mL. After
chlorination, the MPN value declines to 102 / mL. The percent removal (%R) and log removal (logR) of total coliform MPN is
Answer : Option D
Explaination / Solution:
No Explaination.
Q9. Consider the following unit processes commonly used in water treatment; rapid mixing (RM), flocculation (F), primary sedimentation (PS), secondary sedimentation (SS), chlorination (C) and rapid sand filtration (RSF). The order of these unit processes (first to last) in a conventional water treatment plant is
Answer : Option D
Explaination / Solution:
No Explaination.
Q10. Let 
. Consider the set ܵ of all vectors 
such that a2 + b2 = 1 where 
Then ܵ is
. Consider the set ܵ of all vectors such that a2 + b2 = 1 where Then ܵ is
Answer : Option C
Explaination / Solution:
