Exercise: Hydraulics

Questions for: Hydraulics

If S is the length of the crest, H is the height of water source of a weir whose length is L and discharge is Q m3/sec, the velocity of approach Vd is
A:
2gH
B:
C:
D:
Answer: C
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The mouth piece shown in the below figure is generally known as
A:
Internal mouth piece
B:
Re-entrant mouth piece
C:
Borda's mouth piece
D:
All the above.
Answer: D
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Gauge pressure is
A:
absolute pressure - atmospheric pressure
B:
absolute pressure + atmospheric pressure
C:
atmospheric pressure - absolute pressure
D:
none of these.
Answer: A
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Hydraulic ram is a device
A:
for lifting water without an electric motor
B:
for accelerating water flow
C:
for lifting heavy loads
D:
none of these.
Answer: A
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For the most economical trapezoidal open channel,
A:
half of the top width must be equal to one of the sloping sides
B:
the hydraulic mean depth must be equal to half the depth of flow
C:
the semicircle drawn with top width as diameter must touch the three sides of the channel
D:
All of these.
Answer: D
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