631. The simple Pitot tube does not measure the________________?
A. Static pressure
B. Dynamic pressure
C. Velocity at the stagnation point
D. All A., B. and C.

632. Specific speed of a centrifugal pump depends upon the ______________ head?
A. Suction
B. Delivery
C. Manometric
D. None of these

633. Liquid delivery by centrifugal pump starts, only when the head developed by it is equal to the ____________ head?
A. Manometric
B. Total
C. Static
D. Friction

634. In frictional fluid flow, the quantity, (P/ρ) + (V2/2gc) + gz/gc) is___________________?
A. Constant along a streamline
B. Not constant along a streamline
C. Increased in the direction of flow
D. None of these

635. The fluid jet discharging from a 2″ diameter orifice has a diameter of 1.75″ at its venacontracta. The co-efficient of contraction is___________________?
A. 1.3
B. 0.766
C. 0.87
D. None of these

636. For the laminar flow of a fluid in a circular pipe of radius R, the Hagen-Poisseule equation predicts the volumetric flow rate to be proportional to____________________?
A. R
B. R2
C. R4
D. R0.5

637. Specific speed for a centrifugal pump is___________________?
A. N √Q/H3/4
B. N √Q/H2/3
C. N3D5/H1/3
D. N √Q/H

638. Rubber latex is an example of a ______________ fluid?
A. Pseudo plastic
B. Bingham plastic
C. Dilatent
D. Newtonian

639. The continuity equation___________________?
A. Is independent of the compressibility of the fluid
B. Is dependent upon the viscosity of the fluid
C. Represents the conservation of mass
D. None of these

640. The friction factor for turbulent flow in a hydraulically smooth pipe______________?
A. Depends only on Reynolds number
B. Does not depend on Reynolds number
C. Depends on the roughness
D. None of these

NOTE
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