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You Are On Multi Choice Question Bank SET 395

19751. Mach number is important in a fluid flow problem, when the inertia and __________ forces predominate.

19752. Fanning friction factor is equal to(where, fB = Blassius friction factor).

19753. In case of coutte flow, the fluid flow is between two large flat parallel plates with

19754. In a stabilised soap bubble, pressure inside it compared to external pressure is

19755. The component of acceleration resulting due to unsteady nature of flow is called __________ acceleration.

19756. Power required for mixing Newtonion fluids is a function of the

19757. Multistage compressors are used in industry, because they

19758. The hydrodynamic and thermal boundary layers will merge, when

19759. ഇന്ത്യയുടെ ആദ്യ ഭൂതല മിസൈൽ ഏത്? [Inthyayude aadya bhoothala misyl eth?]

19760. For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively).

19761. With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss

19762. The vent valve provided in a liquid handling centrifugal pump is

19763. The discharge through a semi-circular weir varies as (where, H = Head of liquid.)

19764. The Mach number for hypersonic flow of compressible fluid is

19765. Boundary layer thickness in turbulent flow over a flat plate increases as(where, d = distance from the leading edge.)

19766. Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the

19767. The valve used for very remote and accurate control of fluid is a __________ valve.

19768. f = 16/NRe, is valid for

19769. A mixed flow centrifugal pump

19770. In centrifugal pump operation, the cavitation can be eliminated by maintaining suction pressure __________ the vapor pressure of the liquid at the suction temperature.

19771. A rectangular surface 3' x 4', has the lower 3 edge horizontal and 6' below a free oil surface (sp. gr. 0.8). The surface inclination is 300 with the horizontal. The force on one side of the surface is(where, y = specific weight of water)

19772. Reversible adiabatic expansion of an ideal gas is an example of

19773. One dimensional flow implies

19774. In case of turbulent flow of a Newtonion fluid in a straight pipe, the maximum velocity is equal to (where, Vavg = average fluid velocity)

19775. Centrifugal compressors compared to reciprocating compressors

19776. For laminar flow of Newtonion fluids through a circular pipe, for a given pressure drop and length & diameter of pipe, the velocity of fluid is proportional to(where, μ = fluid viscosity )

19777. Which of the following is a spontaneous process associated with negative entropy change?

19778. Umf is the minimum fluidisation velocity for a bed of particles. An increase in the superficial gas velocity from 2 Umf to 2.5 Umf results in (all velocities are smaller than the entrainment velocity of the particles) no change in the

19779. What happens to the equilibrium constant of a reaction if the stochiometric coefficient in the balanced chemical equation is doubled?

19780. Slugging occurs in a fluidised bed, if the bed is

19781. The maximum number of phases possessed by an invariant system consisting of three components is

19782. The continuity equation of fluid mechanics utilises the principle of conservation of

19783. The solution of the radial wave function of a hydrogen atom can be obtained from

19784. Stoke's law is valid, when the particle Reynolds number is

19785. The number of ‘^13C_’signals in naphthalene is

19786. Which one of the following shows the highest bascicity?

19787. In which of the following cases, it is possible for flow to occur from low pressure to high pressure ?

19788. In the vibrational spectrum of ‘CO_2’the number of fundamental vibrational modes common in both infrared and Raman are

19789. The electronegativity difference is highest for the pair

19790. The percentage slip in a reciprocating pump set is given by the % of (where, Q1 = actual discharge Q2 = theoretical discharge)

19791. The correct set of biologically essential element is

19792. The blades of a centrifugal impeller are said to be curved forward, if the __________ of the motion of impeller blades.

19793. The molecule that has ‘S_4’symmetry element is

19794. For the same terminal conditions and fitting size, the least friction loss is incurred in a/an

19795. Identify the point group of ‘PCI_5’

19796. A floating/submerged body is always stable, if its centre of gravity

19797. Which is an abelian group?

19798. The co-efficient of discharge of an orificemeter is a function of

19799. Which of the following molecules have center of symmetry?

19800. Critical velocity in a pipe flow

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