Chemical Engineering MCQs

6108 MCQs  (Page 370 of 611)

Attempt Chemical Engineering Quiz
In magnetic flow meters, voltage generation is________________?
A. Due to the motion of conducting fluid through an externally generated uniform field
B. Proportional to the fluid velocity
C. Both a. and b.
D. Neither a. nor b.
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The pressure co-efficient is the ratio of pressure forces to ______________ forces?
A. Viscous
B. Inertial
C. Gravity
D. Surface tension
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Prandtl mixing length is___________________?
A. Applicable to laminar flow problems
B. A universal constant
C. Zero at the pipe wall
D. None of these
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Viscosity of water at 40°C lies in the range of___________________?
A. 1 × 10-3 to 2 × 10-3 kg/m.s
B. 0.5 × 10-3 to 1 × 10-3 kg/m.s
C. 1 to 2 kg/m.s
D. 0.5 to 1 kg/m.s
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Potential flow is characterised by the___________________?
A. Irrotational and frictionless flow
B. Irrotational and frictional flow
C. One in which dissipation of mechanical energy into heat occurs
D. Formation of eddies within the stream
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Applicability of Bernoulli’s equation is limited to a/an _____________ fluid, that does not exchange shaft work with the surroundings?
A. Incompressible
B. Non-viscous
C. Both a. and b.
D. Neither a. nor b.
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The equation relating friction factor to Reynold number, f-0.5 = 4 loge (NRe/√f)-0.4, is called the _____________ equation?
A. Nikuradse
B. Von-karman
C. Blasius
D. Colebrook
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Which of the following relationship is valid for the equilibrium position of the float in a Rotameter? (Where, Df= Drag force on the float Bf = Buoyant force on the float Wf = Weight of the float)?
A. Df + bf = wf
B. Df = bf + wf
C. Df + bf + wf =0
D. None of these
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Fluid resistance to shear depends upon its_______________?
A. Rate of transfer of molecular momentum
B. Cohesion
C. Both a. and b.
D. Neither a. nor b.
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Forces acting on a particle settling in fluid are _____________ forces?
A. Gravitational & buoyant
B. Centrifugal & drag
C. Gravitational or centrifugal buoyant drag
D. External, drag & viscous
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Word of the Day
26 Jul
Simultaneously
at the same time.
ایک ہی وقت میں، ایک ساتھ، بیک وقت

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