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MCQs

Total Questions : 1709 | Page 165 of 171 pages
Question 1641. The two important forces for a floating body are___________________?
  1.    buoyancy, gravity
  2.    buoyancy, pressure
  3.    buoyancy, inertial
  4.    inertial, gravity
  5.    gravity, pressure
 Discuss Question
Answer: Option A. -> buoyancy, gravity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1642. Resultant pressure of the liquid in the case of an immersed body acts through _________________?
  1.    center of gravity
  2.    center of pressure
  3.    metacentre
  4.    center of buoyancy
  5.    in between e.g. and center of pressure
 Discuss Question
Answer: Option B. -> center of pressure
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1643. Ratio of inertia force to elastic force is known as _____________________?
  1.    Mach number
  2.    Froude number
  3.    Reynold’s number
  4.    Weber’s number
  5.    none of the above
 Discuss Question
Answer: Option A. -> Mach number
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1644. For a floating body to be in equilibrium __________________?
  1.    meta center should be above e.g
  2.    center of buoyancy and e.g. must lie on same vertical plane
  3.    a righting couple should be formed
  4.    all of the above
  5.    none of the above
 Discuss Question
Answer: Option D. -> all of the above
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1645. Differential monometer is used to measure _______________________?
  1.    pressure in pipes, channels etc
  2.    atmospheric pressure
  3.    very low pressure
  4.    difference of pressure between two points
  5.    velocity in pipes
 Discuss Question
Answer: Option D. -> difference of pressure between two points
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1646. The line of action of the buoyant force acts through the centroid of the ___________________?
  1.    submerged body
  2.    volume of the floating body
  3.    volume of the fluid vertically above the body
  4.    displaced volume of the fluid
  5.    none of the above
 Discuss Question
Answer: Option D. -> displaced volume of the fluid
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1647. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be ___________________?
  1.    2 meters of water column
  2.    3 meters of water column
  3.    3.5 meters of water column
  4.    4 m of water column
  5.    none of the above
 Discuss Question
Answer: Option B. -> 3 meters of water column
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1648. In an immersed body, center of pressure is ____________________?
  1.    at the center of gravity
  2.    above the center of gravity
  3.    below be center of gravity
  4.    could be above or below e.g. depending on density of body and liquid
  5.    unpredictable
 Discuss Question
Answer: Option C. -> below be center of gravity
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1649. The normal stress is same in all directions at a point in a fluid ___________________?
  1.    only when the fluid is frictionless
  2.    only when the fluid is incompressible and has zero viscosity
  3.    when there is no motion of one fluid layer relative to an adjacent layer
  4.    irrespective of the motion of one fluid layer relative to an adjacent layer
  5.    in case of an ideal fluid
 Discuss Question
Answer: Option C. -> when there is no motion of one fluid layer relative to an adjacent layer
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!
Question 1650. The time oscillation of a floating body with increase in metacentric height will be________________?
  1.    same
  2.    higher
  3.    lower
  4.    lower/higher depending on weight of body
  5.    unpredictable
 Discuss Question
Answer: Option C. -> lower
NO EXPLANATION IS AVAILABLE FOR THIS QUESTION!

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