Lakshya Education MCQs

Question: Newton's law of viscosity is a relationship between
Options:
A. Pressure, velocity and temperature
B. Shear stress and rate of shear strain
C. Shear stress and velocity
D. Rate of shear strain and temperature
Answer: Option B

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Question 1. The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.
  1.     Same as
  2.     Less than
  3.     More than
  4.     None of these
Answer: Option A
Question 2. An open vessel of water is accelerated up an inclined plane. the free water surface will
  1.     Be horizontal
  2.     Make an angle in direction of inclination of inclined plane
  3.     Make an angle in opposite direction to inclination of inclined plane
  4.     Any one of above is possible
Answer: Option C
Question 3. The rise of liquid along the walls of a revolving cylinder about the initial level is _________ the depression of the liquid at the axis of rotation.
  1.     Same as
  2.     Less than
  3.     More than
  4.     None of these
Answer: Option A
Question 4. Which of the following statement is wrong?
  1.     A flow whose streamline is represented by a curve is called two dimensional flow.
  2.     The total energy of a liquid particle is the sum of potential energy, kinetic energy and pressure energy.
  3.     The length of divergent portion in a Venturimeter is equal to the convergent portion.
  4.     A pitot tube is used to measure the velocity of flow at the required point in a pipe.
Answer: Option C
Question 5. Which of the following statement is wrong?
  1.     The reaction turbines are used for low head and high discharge
  2.     The angle of taper on draft tube is less than 8°
  3.     An impulse turbine is generally fitted slightly above the tail race
  4.     A Francis turbine is an impulse turbine
Answer: Option D
Question 6. An open vessel of water is accelerated up an inclined plane. the free water surface will
  1.     Be horizontal
  2.     Make an angle in direction of inclination of inclined plane
  3.     Make an angle in opposite direction to inclination of inclined plane
  4.     Any one of above is possible
Answer: Option C

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