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MCQs

Total Questions : 3218 | Page 34 of 322 pages
Question 331. The discharge through a semi-circular weir varies as (where, H = Head of liquid.)
  1.    H
  2.    H2
  3.    H3/2
  4.    H1/2
 Discuss Question
Answer: Option B. -> H2
Question 332. Fluid flow in a/an __________ is an example of pressure flow.
  1.    Partially filled pipeline
  2.    Pipe
  3.    Open channel
  4.    River
 Discuss Question
Answer: Option B. -> Pipe
Question 333. __________ pumps are a group of vacuum pumps.
  1.    Hyter
  2.    Sump
  3.    Mono
  4.    Submerged
 Discuss Question
Answer: Option A. -> Hyter
Question 334. In case of unsteady fluid flow, conditions & flow pattern change with the passage of time at a position in a flow situation. Which of the following is an example of unsteady flow?
  1.    Discharge of water by a centrifugal pump being run at a constant rpm
  2.    Water flow in the suction and discharge pipe of a reciprocating pump
  3.    Water discharge from a vertical vessel in which constant level is maintained
  4.    Low velocity flow of a highly viscous liquid through a hydraulically smooth pipe
 Discuss Question
Answer: Option B. -> Water flow in the suction and discharge pipe of a reciprocating pump
Question 335. A spherical particle is falling slow in a viscous liquid such that Reynolds number is less than 1. Which statement is correct for this situation?
  1.    Inertial and drag forces are important
  2.    Drag, gravitational and buoyancy forces are impportant
  3.    Drag force and gravitational forces are important
  4.    None of the above
 Discuss Question
Answer: Option B. -> Drag, gravitational and buoyancy forces are impportant
Question 336. The time taken for gravity flow of a fixed volume of liquid (as in Redwood viscometer) is directly proportional to its
  1.    Absolute viscosity
  2.    Ratio of absolute viscosity to density
  3.    Density
  4.    Reynolds number
 Discuss Question
Answer: Option B. -> Ratio of absolute viscosity to density
Question 337. 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
 Discuss Question
Answer: Option D. -> None of these
Question 338. The speed of a sound wave in a gas is analogous to the speed of
  1.    An elementary wave in an open channel
  2.    Flow in an open channel
  3.    A disturbance travelling upstream in moving fluid
  4.    None of these
 Discuss Question
Answer: Option A. -> An elementary wave in an open channel
Question 339. Newton's law of viscosity relates the
  1.    Shear stress and velocity
  2.    Velocity gradient and pressure intensity
  3.    Shear stress and rate of angular deformation in a fluid
  4.    Pressure gradient and rate of angular deformation
 Discuss Question
Answer: Option C. -> Shear stress and rate of angular deformation in a fluid
Question 340. Priming is needed in a __________ pump.
  1.    Reciprocating
  2.    Gear
  3.    Centrifugal
  4.    Diaphragm
 Discuss Question
Answer: Option C. -> Centrifugal

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