Chemical Engineering MCQs

6108 MCQs (Page 405 of 611)

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Purpose of hydraulic accumulator is to_______________?

A. Ensure intermittent supply of hydraulic pressure
B. Increase the pressure and store/ accumulate it
C. Accumulate pressure to increase force
D. Generate high pressure to operate hydraulic machines like cranes, lifts, presses etc

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Dimension of absolute viscosity is_________________?

A. Ml-1t-1
B. Mlt-1
C. Ml-1t
D. Mlt

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The Prandtl Pitot tube measures the__________________?

A. Velocity at a point in the flow
B. Pressure at a point
C. Average flow velocity
D. Pressure difference in pipe flow

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A Bingham fluid of viscosity μ = 10 Pa.s and yield stress, η0 = 10 KPa, is shared between flat parallel plates separated by a distance of 10-3 m. The top plate is moving with a velocity of 1 m/s. The shear stress on the plate is________________?

A. 10 kpa
B. 20 kpa
C. 30 kpa
D. 40 kpa

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The equation f-0.5 = 4.07 loge (NRe √f)-0.6 is called the ____________?

A. Colebrook formula
B. Von-karman equation
C. Fanning equation
D. None of these

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Laminar flow of a Newtonian fluid ceases to exist, when the Reynolds number exceeds___________________?

A. 4000
B. 2100
C. 1500
D. 3000

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For an unstable equilibrium of a floating body (where, M = metacentre.) ?

A. M is above g
B. M is below g
C. M & g coincide
D. None of these

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Schedule number of a pipe, which is a measure of its wall thickness, is given by ________________?

A. 1000 p’/s
B. 100 p’/s
C. 1000 s/p’
D. 10000 p’/s

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Steady fluid flow occurs, when the derivative of flow variables satisfy the following condition.

A. ∂/∂s = 0
B. ∂/∂t = 0
C. ∂/∂s = constant
D. ∂/∂t = constant

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When the momentum of one fluid is used for moving another fluid, such a device is called a/an______________?

A. Jet pump
B. Blower
C. Acid egg
D. None of these

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