Fluid Mechanics

91.At what value of crank angle (roughly), no flow of water from or into the air vessel takes place in case of a double acting reciprocating pump?

  1. 40° and 140°
  2. 45° and 60°
  3. 90° and 80°
  4. 20° and 120°
Correct answer: (A)
40° and 140°

92.Baffles in mixing tanks are provided to

  1. Reduce swirling and vortex formation
  2. Increase the structural strength of the tank
  3. Aid in rotational flow
  4. None of these
Correct answer: (A)
Reduce swirling and vortex formation

93.Bed pressure drop in an air fluidised bed of catalyst particles (ρp = 200 kg/m3, Dp = 0.05 cm) of 60 cm bed depth and bed porosity of 0.5 expressed in cm of water (manometer) is

  1. 90
  2. 60
  3. 45
  4. 30
Correct answer: (B)
60

94.Bernoulli's equation accounts for the

  1. Various momentums
  2. Various masses
  3. Different forms of mechanical energy
  4. None of these
Correct answer: (C)
Different forms of mechanical energy

95.Bernoulli's equation describes the

  1. Mechanical energy balance in potential flow
  2. Kinetic energy balance in laminar flow
  3. Mechanical energy balance in turbulent flow
  4. Mechanical energy balance in boundary layer
Correct answer: (A)
Mechanical energy balance in potential flow

96.Bernoulli's equation for fluid flow is derived following certain assumptions. Out of the assumptions listed below, which set of assumptions is used in derivation of Bernoulli's equation?
A. Fluid flow is frictionless & irrotational.
B. Fluid flow is steady.
C. Fluid flow is uniform & turbulent.
D. Fluid is compressible.
E. Fluid is incompressible.

  1. A, C, D
  2. B, D, E
  3. A, B, E
  4. A, D, E
Correct answer: (C)
A, B, E

97.Bernoulli's equation for steady, frictionless, continuous flow states that the _________ at all sections is same.

  1. Total pressure
  2. Total energy
  3. Velocity head
  4. None of these
Correct answer: (B)
Total energy

98.Bernoulli's equation is dependent on the

  1. First law of thermodynamics
  2. Third law of thermodynamics
  3. Law of conservation of momentum
  4. None of these
Correct answer: (D)
None of these

99.Bernoulli's equation is not applicable, when the flow is

  1. Irrotational
  2. Incompressible
  3. Viscous
  4. All (A), (B) & (C)
Correct answer: (D)
All (A), (B) & (C)

100.Bernoulli‟s equation does not apply to the functioning of a/an

  1. Venturimeter
  2. Orificemeter
  3. pitot tube
  4. None of these
Correct answer: (D)
None of these
Previous
Page 10 of 73
Next
Copyright © EngineeringMCQ.com