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MCQs

Total Questions : 3147 | Page 3 of 315 pages
Question 21. A hydraulic accumulator normally consists of
  1.    Two cylinders, two rams and a storage device
  2.    A cylinder and a ram
  3.    Two coaxial rams and two cylinders
  4.    A cylinder, a piston, storage tank and control valve
 Discuss Question
Answer: Option B. -> A cylinder and a ram
Question 22. A hydraulic intensifier normally consists of
  1.    Two cylinders, two rams and a storage device
  2.    A cylinder and a ram
  3.    Two coaxial rams and two cylinders
  4.    A cylinder, a piston, storage tank and control valve
 Discuss Question
Answer: Option C. -> Two coaxial rams and two cylinders
Question 23. Center of pressure compared to e.g. is
  1.    Above it
  2.    Below it
  3.    At same point
  4.    Above or below depending on area of body
 Discuss Question
Answer: Option B. -> Below it
Question 24. In order that flow takes place between two points in a pipeline, the differential pressure between these points must be more than
  1.    Frictional force
  2.    Viscosity
  3.    Surface friction
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 25. The total energy line lies over the centre line of the pipe by an amount equal to
  1.    Pressure head
  2.    Velocity head
  3.    Pressure head + velocity head
  4.    Pressure head - velocity head
 Discuss Question
Answer: Option C. -> Pressure head + velocity head
Question 26. The specific speed of a turbine is given by the equation
  1.    N√P / H3/2
  2.    N√P / H²
  3.    N√P / H5/4
  4.    N√P / H3
 Discuss Question
Answer: Option C. -> N√P / H5/4
Question 27. An open tank containing liquid is made to move from rest with a uniform acceleration. The angle 0 which the free surface of liquid makes with the horizontal is such that (where a = Horizontal acceleration of the tank, and g = Acceleration due to gravity)
  1.    tanθ = a/g
  2.    tanθ = 2 a/g
  3.    tanθ = a/2g
  4.    tanθ = a2/2g
 Discuss Question
Answer: Option A. -> tanθ = a/g
Question 28. The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to
  1.    Buoyancy
  2.    Equilibrium of a floating body
  3.    Archimedes' principle
  4.    Bernoulli's theorem
 Discuss Question
Answer: Option C. -> Archimedes' principle
Question 29. The discharge through a channel of trapezoidal section is maximum when
  1.    Width of channel at the top is equal to twice the width at the bottom
  2.    Depth of channel is equal to the width at the bottom
  3.    The sloping side is equal to half the width at the top
  4.    The sloping side is equal to the width at the bottom
 Discuss Question
Answer: Option C. -> The sloping side is equal to half the width at the top
Question 30. Coefficient of contraction is the ratio of
  1.    Actual velocity of jet at vena contracta to the theoretical velocity
  2.    Loss of head in the orifice to the head of water available at the exit of the orifice
  3.    Loss of head in the orifice to the head of water available at the exit of the orifice
  4.    Area of jet at vena-contracta to the area of orifice
 Discuss Question
Answer: Option D. -> Area of jet at vena-contracta to the area of orifice

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