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MCQs

Total Questions : 3147 | Page 36 of 315 pages
Question 351. A flow whose streamline is represented by a straight line, is called __________ dimensional flow.
  1.    One
  2.    Two
  3.    Three
  4.    Four
 Discuss Question
Answer: Option A. -> One
Question 352. Free surface of a liquid behaves like a sheet and tends to contract to smallest possible area due to the
  1.    Force of adhesion
  2.    Force of cohesion
  3.    Force of friction
  4.    Force of diffusion
 Discuss Question
Answer: Option B. -> Force of cohesion
Question 353. The Metacentric heights of two floating bodies A and B are 1 m and 1.5 m respectively. Select the correct statement.
  1.    The bodies A and B have equal stability
  2.    The body A is more stable than body B
  3.    The body B is more stable than body A
  4.    The bodies A and B are unstable
 Discuss Question
Answer: Option C. -> The body B is more stable than body A
Question 354. Kinematic viscosity is equal to
  1.    Dynamic viscosity/density
  2.    Dynamic viscosity × density
  3.    Density/dynamic viscosity
  4.    1/dynamic viscosity × density
 Discuss Question
Answer: Option A. -> Dynamic viscosity/density
Question 355. A fluid having no viscosity is known as
  1.    Real fluid
  2.    Ideal fluid
  3.    Newtonian fluid
  4.    Non-Newtonian fluid
 Discuss Question
Answer: Option B. -> Ideal fluid
Question 356. The power transmitted through the nozzle is maximum when the head lost due to friction in the pipe is __________ of the total supply head.
  1.    One-half
  2.    One-third
  3.    Two-third
  4.    None of these
 Discuss Question
Answer: Option B. -> One-third
Question 357. The total head of a liquid particle in motion is equal to
  1.    Pressure head + kinetic head + potential head
  2.    Pressure head - (kinetic head + potential head)
  3.    Potential head - (pressure head + kinetic head)
  4.    Kinetic head - (pressure head + potential head)
 Discuss Question
Answer: Option A. -> Pressure head + kinetic head + potential head
Question 358. The total energy of a liquid particle in motion is equal to
  1.    Pressure energy + kinetic energy + potential energy
  2.    Pressure energy - (kinetic energy + potential energy)
  3.    Potential energy - (pressure energy + kinetic energy
  4.    Kinetic energy - (pressure energy + potential energy)
 Discuss Question
Answer: Option A. -> Pressure energy + kinetic energy + potential energy
Question 359. The maximum efficiency of jet propulsion of a ship with inlet orifices at right angles to the direction of motion of ship, is
  1.    40%
  2.    50%
  3.    60%
  4.    80%
 Discuss Question
Answer: Option B. -> 50%
Question 360. The power absorbed (in watts) in overcoming the viscous resistance of a footstep bearing is
  1.    μ π³ N² R² /1800 t
  2.    μ π³ N² R⁴ /1800 t
  3.    μ π³ N² R² /3600 t
  4.    μ π³ N² R⁴ /3600 t
 Discuss Question
Answer: Option B. -> μ π³ N² R⁴ /1800 t

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