chemical engineering fluid mechanics for chemical chemical engineering MCQs – Page 14

Practise multiple-choice questions from chemical engineering fluid mechanics for chemical chemical engineering for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

chemical engineering fluid mechanics for chemical chemical engineering Mcqs
261. Most commonly used joint in the underground pipe lines is the________________?
comments icon0

A. Coupling

B. Sleeve joint

C. Flange

D. Expansion joint

262. Paper pulp is an example of _____________ fluid?
comments icon0
A. Bingham plastic

B. Dilatant

C. Newtonian

D. Pseudo-plastic

263. A fluid is a substance, that_________________?
comments icon0

A. Has zero shear stress

B. Has to be kept in a closed container

C. Flows when even a small shear is applied to it

D. Is almost incompressible

264. What is the speed of sound (m/sec) in ordinary water ?
comments icon0

A. 1000

B. 3000

C. 330

D. 1500
265. The component of acceleration resulting due to unsteady nature of flow is called ____________ acceleration?
comments icon0

A. Normal

B. Tangential

C. Convective

D. Local
266. Higher specific speed (200-500) of a centrifugal pump indicates that the pump is of ______________ flow type?
comments icon0
A. Axial

B. Radial

C. Mixed

D. None of these

267. Differential manometer measures the____________________?
comments icon0

A. None of these

B. Atmospheric pressure

C. Pressure difference between two points

D. Sub-atmospheric pressure

268. The frictional resistance in laminar flow does not depend on the_________________?
comments icon0

A. Fluid temperature

B. Pressure of flow

C. Area of surface in contact

D. Flow velocity

269. Minimum porosity for fluidisation is____________________?
comments icon0

A. That corresponding to completely fluidised bed

B. That corresponding to static bed

C. Less than that of the static bed

D. The porosity of the bed when true fluidisation begins
270. For the transfer of solution of thick slurry, the pump used is a _____________ pump?
comments icon0
A. Diaphragm

B. Reciprocating

C. Centrifugal

D. Gear

271. The distribution of shear stress in a stream of fluid in a circular tube is_____________________?
comments icon0

A. Linear with radius for turbulent flow only

B. Linear with radius for laminar flow only

C. Linear with radius for both laminar & turbulent flow

D. Parabolic with radius for both laminar & turbulent flow

272. For a particle settling in water at its terminal settling velocity, which of the following is true ?
comments icon0

A. Drag = weight

B. Buoyancy = weight + drag

C. Drag = buoyancy + weight

D. Weight = buoyancy + drag
273. Centrifugal compressors compared to reciprocating compressors__________________?
comments icon0
A. All A., B. and C.

B. Have quieter operation

C. Require less space

D. Have lower operating costs

274. Mass velocity in case of steady flow and through a constant cross-section conduit is independent of the _________________?
comments icon0

A. Temperature

B. Pressure

C. Both A. & B.

D. Neither A. nor B.

275. The main factor on which the behaviour of a mass of fluidised solid depends mainly is the___________________?
comments icon0

A. Fluid characteristics

B. Particle size

C. Both A. and B.

D. Neither A. nor B.

276. The terminal velocity of a particle moving through a fluid varies as dp n. The value of n is equal to _______________ in Stokes law regime?
comments icon0

A. 1.5

B. 2

C. 0.5

D. 1

277. The effect of solid boundary on the fluid flow is confined to the boundary layer, except for fluids ?
comments icon0

A. Having high viscosities

B. Moving at low velocities

C. Both A. & B.

D. Neither A. nor B.

278. With increase in the ratio of orifice diameter to pipe diameter in case of an orificemeter, the overall pressure loss_______________?
comments icon0

A. Increases linearly

B. Remain constant

C. Increases

D. Decreases

279. Which is the correct relationship for a centrifugal pump? (Where, D = Impeller diameter, inches H = Head developed, ft of liquid pumped N = Speed of pump, rpm) ?
comments icon0

A. H = 1840 D0.5/N

B. D = 1840 N/H0.5

C. D = 1840 H/N

D. D = 1840 H0.5/N
280. Priming is needed in a ______________ pump?
comments icon0

A. Reciprocating

B. Gear

C. Diaphragm

D. Centrifugal