Hydraulics And Fluid Mechanics In Me(Mechanical Engineering ) Questions and Answers

Question 1. Pressure of the order of 10" torr can be measured by
  1.    Bourdon tube
  2.    Pirani Gauge
  3.    Micro-manometer
  4.    Ionisation gauge
Explanation:-
Answer: Option D. -> Ionisation gauge
Question 2. A bucket of water is hanging from a spring balance. An iron piece is suspended into water without touching sides of bucket from another support. The spring balance reading will
  1.    Increase
  2.    Decrease
  3.    Remain same
  4.    Increase/decrease depending on depth of immersion
Explanation:-
Answer: Option C. -> Remain same
Question 3. Fluid is a substance which offers no resistance to change of
  1.    Pressure
  2.    Flow
  3.    Shape
  4.    Volume
Explanation:-
Answer: Option C. -> Shape
Question 4. The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.
  1.    Higher
  2.    Lower
  3.    Same
  4.    None of these
Explanation:-
Answer: Option B. -> Lower
Question 5. The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
  1.    $$\frac{1}{2}$$ × depth
  2.    $$\frac{1}{2}$$ × breadth
  3.    $$\frac{1}{2}$$ × sloping side
  4.    $$\frac{1}{4}$$ × (depth + breadth)
Explanation:-
Answer: Option A. -> $$\frac{1}{2}$$ × depth
Question 6. The volume of a fluid __________ as the pressure increases.
  1.    Remains same
  2.    Decreases
  3.    Increases
  4.    None of these
Explanation:-
Answer: Option B. -> Decreases
Question 7. Bulk modulus of a fluid __________ as the pressure increases.
  1.    Remain same
  2.    Decreases
  3.    Increases
  4.    None of these
Explanation:-
Answer: Option C. -> Increases
Question 8. When the pressure intensity at a point is more than the local atmospheric pressure, then the difference of these two pressures is called
  1.    Gauge pressure
  2.    Absolute pressure
  3.    Positive gauge pressure
  4.    Vacuum pressure
Explanation:-
Answer: Option C. -> Positive gauge pressure
Question 9. The siphon will work satisfactorily, if the minimum pressure in the pipe is __________ vapour pressure of liquid.
  1.    Equal to
  2.    Less than
  3.    More than
  4.    None of these
Explanation:-
Answer: Option C. -> More than
Question 10. Working principle of dead weight pressure gauge tester is based on
  1.    Pascal's law
  2.    Dalton's law of partial pressure
  3.    Newton's law of viscosity
  4.    Avogadro's hypothesis
Explanation:-
Answer: Option A. -> Pascal's law
© Lakshya_Education.com, All Right Reserved.
Contact Us services