600. A globe valve is the most suitable for applications, in which____________________?
A. Fluid flow control is required
B. Fluid contains dispersed solid particles
C. Valve is required to be either fully open or fully closed
D. One way flow is required

601. Which of the following is an undesirable characteristic of a refrigerant ?
A. It should be non-explosive
B. It should have a sub-atmospheric vapor pressure at the temperature in refrigerator coils
C. Its vapor pressure at the condenser temperature should be very high
D. None of these

602. Sound waves propagation in air exemplifies an ______________ process?
A. Adiabatic
B. Isothermal
C. Isometric
D. None of these

603. Work done may be calculated by the expression ∫ p dA for _____________ processes ?
A. Non-flow reversible
B. Adiabatic
C. Both A. and B
D. Neither A. nor B

604. 1m3 of an ideal gas at 500 K and 1000 kPa expands reversibly to 5 times its initial volume in an insulated container. If the specific heat capacity (at constant pressure) of the gas is 21 J/mole . K, the final temperature will be ?
A. 35 K
B. 174 K
C. 274 K
D. 154 K

605. In the reaction; N2 + O2 ⇌ 2NO, increasing the pressure will result in_________________?
A. Shifting the equilibrium towards right
B. Shifting the equilibrium towards left
C. No change in equilibrium condition
D. None of these

606. At a given temperature, the volume of a gas dissolved in a solvent _______________ with increase in pressure?
A. Increases
B. Decreases
C. Remains unchanged
D. May increase or decrease; depends on the gas

607. The hydraulic diameter of an annulus of inner and outer radii Ri and Ro respectively is___________________?
A. 4(Ro-Ri)
B. √(Ro-Ri)
C. 2(Ro-Ri)
D. Ro + Ri

608. Pressure drop for laminar fluid flow through a circular pipe is given by__________________?
A. 4f (L/D) (v2/2gc) ρ
B. 32 (μLV/gc D2)
C. 16/NRe
D. (fLρ/D) (v2/2gc)

609. In case of a pipe of constant cross-sectional area, the maximum fluid velocity obtainable is___________________?
A. The velocity of sound
B. Dependent on its cross-sectional area
C. Dependent on fluid viscosity
D. Dependent on fluid density

610. Minimum fluidisation velocity for a specific system depends upon the___________________?
A. Particle size
B. Fluid viscosity
C. Density of both the particle & the fluid
D. All A., B. and C.

NOTE
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PLEASE COMMENT WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION IN COMMENT BOX.
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