831. What is the unit of kinematic viscosity in SI unit ?
A. M2/sec
B. N/m2. sec
C. Kg. sec/m
D. None of these
832. For a given Reynolds number, in a hydraulically smooth pipe, further smoothening ____________ the friction factor?
A. Brings about no further reduction of
B. Increases
C. Decreases
D. None of these
833. A compressor that takes suction at a pressure below atmospheric and discharge against atmospheric pressure is called a ____________ pump?
A. Sump
B. Volute
C. Vacuum
D. Submerged
834. In case of a centrifugal pump, the theoretical head developed is dependent on the _____________ the impeller?
A. Speed of
B. Diameter of
C. Fluid velocity leaving
D. All A., B. and C.
835. For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively) ?
A. G is above B
B. B is above G
C. B & G coincide
D. None of these
836. Which of the following has the maximum compression ratio ?
A. Blower
B. Compressor
C. Vacuum pump
D. Fan
837. Piezometric head is the sum of the ______________ heads?
A. Elevation & kinetic energy
B. Elevation & pressure
C. Kinetic energy & pressure
D. None of these
838. Which of the following exemplifies a three dimensional fluid flow ?
A. Fluid flow at the inlet to a nozzle
B. Fluid flow between parallel plates
C. Viscous fluid flow between converging plates
D. None of these
839. Which law is followed by the velocity distribution in the turbulent boundary layer ?
A. Parabolic law
B. Linear law
C. Logarithmic law
D. None of these
840. In case of turbulent flow of a Newtonian fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)?
A. Vavg
B. 1.2 Vavg
C. 1.5 Vavg
D. 1.8 Vavg
NOTE
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