751. The rate of shear versus the shear stress curves are time dependent for _____________ fluid?
A. Thixotropic
B. Rheopectic
C. Both A. & B.
D. Neither A. nor B.

753. In case of a centrifugal pump, the ratio of total delivered pressure to pressure developed with the impeller is called the _____________ efficiency?
A. Manometric
B. Mechanical
C. Volumetric
D. Overall

754. A fluid whose apparent viscosity increases with shear rate is termed as the _____________ fluid?
A. Newtonian
B. Viscous
C. Dilatant
D. Non-viscous

755. In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where, T = absolute temperature) ?
A. 1/√T
B. 1/T
C. √T
D. T

756. In the laminar boundary layer flow over a flat plate, the ratio (δ/x) varies as: (where, ‘δ’ is the boundary layer thickness and ‘x’ is the distance from the leading edge in the direction of flow)?
A. Re
B. √Re
C. 1/Re
D. Re-1/2

757. In case of isentropic flow, the speed of sound in an ideal gas is proportional to (where M = molecular weight of the gas) ?
A. 1/√M
B. √M
C. 1/M
D. M

758. Foot valves provided in pumps are ____________ valves?
A. Relief
B. Three/four way
C. Pressure reducing
D. Directional control

759. Which of the following can be used for the direct measurement of volumetric flow rate of slurry ?
A. Venturimeter
B. Orificemeter
C. Rotameter
D. Pitot tube

760. The maximum delivery pressure of compressors can be upto _____________ atmospheres?
A. 10
B. 100
C. 250
D. 1000

NOTE
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