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MCQs

Total Questions : 1709 | Page 150 of 171 pages
Question 1491. Newton’s law of viscosity relates________________?
  1.    intensity of pressure and rate of angular deformation
  2.    shear stress and rate of angular deformation
  3.    shear stress, viscosity and temperature
  4.    viscosity and rate of angular deformation
 Discuss Question
Answer: Option B. -> shear stress and rate of angular deformation
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1492. If the dynamic viscosity of a fluid is 0.5 poise and specific gravity is 0.5, then the kinematic viscosity of that fluid in stokes is__________________?
  1.    0.25
  2.    0.50
  3.    1.0
  4.    none of the above
 Discuss Question
Answer: Option C. -> 1.0
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1493. The viscosity of a gas_______________?
  1.    decreases with increase in temperature
  2.    increases with increase in temperature
  3.    is independent of temperature
  4.    is independent of pressure for very high pressure intensities
 Discuss Question
Answer: Option B. -> increases with increase in temperature
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1494. The unit of kinematic viscosity is_______________?
  1.    gm/cm-sec2
  2.    dyne-sec/cm2
  3.    gm/cm2-sec
  4.    cm2/sec
 Discuss Question
Answer: Option D. -> cm2/sec
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1495. An ideal fluid is_______________?
  1.    one which obeys Newton’s law of viscosity
  2.    frictionless and incompressible
  3.    very viscous
  4.    frictionless and compressible
 Discuss Question
Answer: Option B. -> frictionless and incompressible
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1496. Select the correct statement_.?
  1.    The absolute roughness of a pipe de-creases with time
  2.    A pipe becomes smooth after using for long time
  3.    The friction factor decreases with time
  4.    The absolute roughness increases with time
 Discuss Question
Answer: Option D. -> The absolute roughness increases with time
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1497. Pascal-second is the unit of______________?
  1.    pressure
  2.    kinematic viscosity
  3.    dynamic viscosity
  4.    surface tension
 Discuss Question
Answer: Option C. -> dynamic viscosity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1498. Hot wire anemometer is used to measure_______________?
  1.    discharge
  2.    velocity of gas
  3.    pressure intensity of gas
  4.    pressure intensity of liquid
 Discuss Question
Answer: Option B. -> velocity of gas
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1499. Density of water is maximum at ___________________?
  1.    0°C
  2.    0°K
  3.    4°C
  4.    100°C
  5.    20°C.
 Discuss Question
Answer: Option D. -> 100°C
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1500. Property of a fluid by which its own molecules are attracted is called ________________?
  1.    adhesion
  2.    cohesion
  3.    viscosity
  4.    compressibility
  5.    surface tension
 Discuss Question
Answer: Option B. -> cohesion
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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