344. Pick up the correct statement
A.Venturimeter is more accurate than nozzle
B.Nozzle has same accuracy as venturi, but pressure loss is more and the cost is low
C.Pressure loss in both is same
D.Venturimeter has no restriction on availability of straight length

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345. Rotameter is used to measure
A.Rotation
B.Flow
C.Pressure
D.Velocity

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346. The most economical section of a trapezoidal channel for maximum discharge is obtained when
A.Hydraulic depth = half of depth
B.Half of top width = sloping side
C.Length at perpendiculars from centre of top width to bottom and sloping sides are equal
D.All of the above

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347. When venturimeter is inclined, then for a given flow it will show
A.Less reading
B.More reading
C.Same reading
D.Inaccurate reading

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348. One litre of water occupies a volume of
A.100 cm3
B.250 cm3
C.500 cm3
D.1000 cm3

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349. The value of bulk modulus of a fluid is required to determine
A.Reynold's number
B.Froude's number
C.Mach number
D.Euler's number

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350. In a depressed nappe
A.the pressure below the nappe is atmospheric
B.the pressure below the nappe is negative
C.the pressure above the nappe is atmospheric
D.the pressure above the nappe is negative

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