- (A) Mean flow velocity is about 0.5 times the maximum velocity
- (B) Velocity profile becomes flatter and flatter with increasing Reynolds number
- (C) Point of maximum instability exists at a distance of 2r/3 from the pipe wall (r = pipe radius)
- (D) Skin friction drag, shear stresses, random orientation of fluid particles and slope of velocity profile at the wall are more
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- (A) 0.1
- (B) 0.55
- (C) 0.95
- (D) 1.85
- (A) Gravitational & buoyant
- (B) Centrifugal & drag
- (C) Gravitational or centrifugal buoyant drag
- (D) External, drag & viscous
- (A) Df + Bf = Wf
- (B) Df = Bf + Wf
- (C) Df + Bf + Wf =0
- (D) None of these
- (A) Nikuradse
- (B) Von-Karman
- (C) Blasius
- (D) Colebrook
- (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
- (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
- (A) Fluid on the solid in a direction opposite to flow
- (B) Fluid on the solid in the direction of flow
- (C) Solid on the fluid
- (D) None of these
- (A) gm/cm2. sec
- (B) gm/cm. sec
- (C) cm2/sec
- (D) m2/sec
- (A) Decrease
- (B) Increase
- (C) Remain same
- (D) Unpredictable
