Asst. Engineer (Civil) in Harbour Engineer [186:2005]

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100 questions
• Q1
If for a two dimensional flow, the stream function is given by ψ = 2xy, the velocity at the point (3,6) is :
6
12
18
13.42
30s
• Q2
A model of a reservoir is emptied in 10 minutes. If the model scale is 1:25, the time taken by the prototype to empty itself would be:
250 minutes
2 minutes
50 minutes
6250 minutes
30s
• Q3
If the weight of a body immersed in a fluid exceeds the buoyant force then the body will
Tend to move downward and it may finally sink.
Turn upside down.
Float on the fluid.
Rise until its weight equals the buoyant force.
30s
• Q4
The head over a “V” notch at the end of a channel is 75 cm. If an error of 0.15 cm., is possible in the measurement of the head, then the percentage error in computing the discharge is :
1
0.5
0.33
1.5
30s
• Q5
In a laminar flow through a circular pipe of diameter 20 cm, the maximum velocity is found to be 1 m/sec. The velocity at a radial distance 5 cm from the axis of the pipe is :
0.5 m/sec
0.75 m/sec
1.00 m/sec
0.25m/sec
30s
• Q6
Loss of head due to velocity of water at the outlet of a pipe is :
v2/2g
1.5v2/2g
v2/3g
0.5v2/2g
30s
• Q7
When the Mach number is more than 6, the flow of a fluid is called :
Sonic flow
Subsonic flow
Hypersonic flow
Supersonic flow
30s
• Q8
Venturimeter is used to measure :
Discharge
Velocity at a point
Average velocity
Pressure at a point
30s
• Q9
The ratio of Inertia force of a flowing fluid and its viscous force is called
Reynold's number
Froude's number
Euler's number
Weber's number
30s
• Q10
For a floating body, if the meta centre is above the centre of gravity the equilibrium called :
Unstable
Stable
None of these
Neutral
30s
• Q11
Gunter's chain is having a length of:
100 meters
66 meters
66 feet
100 feet
30s
• Q12
Reciprocal ranging is resorted to when the ends of the chain line are not invisible due to:
Very long distance
Thick forest
Very tall building
High ground
30s
• Q13
The reduced bearing of a line is South 47°&nbsp; 26' West. Its whole circle bearing is:
42° 34'
132° 34'
137° 26'
227o&nbsp;26'
30s
• Q14
In a closed traverse, the sum of the South latitudes exceeds the sum of the North latitudes and the sum of the East departures exceeds the sum of the West departures. Then the closing line will lie in the.