MCQs Civil Engineering
1. The flow in open channel is turbulent if the Reynolda number is :
(a) 2000
(b) 2000
(c) 4000
(d) 4000
ans (b)
2. Air valves in a didtribution system are provided at :
(a) Dead ends in the water distribution system
(b) Junction of main & branch pipes
(c) Summit point on water mains
(d) Place where the pressyre is minimum
ans (c)
3. To measure static pressure in a oipe, uses a pressure gyage conncetd to a :
(a) Pitot tube
(b) Venturimeter
(c)Orifice meter
(d)Pictometer tapping
ans (a)
4. The minor loss due to sudden contraction is dur to :
(a)Flow contraction
(b) Expansion of flow
(c) Cavitations
(d) Boundary
ams (b)
5. A compoumd pipe system consists of 1800m of 50cm, 1200m of 40cm and 600m of 30cm cat iron pipes connected in series. If this system is converted into an equuvalent length of 40cm pioe, thr lenght will be
(a) 4300m
(b) 4320m
(c) 4310m
(d) 4680m
ans (b)
6. When the froude number is equal to 1 then the channel flow is said to be
(a)sub critical flow
(b) super critical flow
(c) critical flow
(d)torrential flow
ans (c)
7. Vorticity at any point is defined as thr circulation per
(a) unit area
(b)unit lenght
(c) unit volume
(d) unit mass
ans (d)
8. Newton's law of viscosity relates
(a) intensity of pressure and rate of angular drformation
(b)viscosity and rate of angular deformation
(c) shear stress, viscosity and temperature
(d) shear stress and rate of angular deformation
ans (d)
9. Coefficient of velocity of venturimeter
(a) is independent of Reynolds number
(b)decreases with higher Reynds number
(c)is equal to thr coefficient of discharge of ventureter
(d) None उपoरf the above
ans (c)
10. The ratio of maxinum velocity to average velocity of viscous fluid through a circular pipe is :
(a)2
(b)1.25
(c)0.75
(d)0.5
ans (a)