Hydraulics And Fluid Mechanics In Me - Study Mode

[#256] Pressure of the order of 10" torr can be measured by
Correct Answer

(D) Ionisation gauge

[#257] The most economical section of a trapezoidal channel is one which has hydraulic mean depth equal to
Correct Answer

(A) $$frac{1}{2}$$ × depth

[#258] The pressure of liquid at throat in a Venturimeter is __________ than that at inlet.
Correct Answer

(B) Lower

[#259] 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
Correct Answer

(C) Remain same

Explanation

Solution: When an iron piece is suspended into the water without touching the sides of the bucket, the volume of water displaced by the iron piece is equal to the volume of the iron piece submerged. According to Archimedes' principle, the buoyant force acting on the iron piece (equal to the weight of the water displaced) is equal to the weight of the iron piece itself. Therefore, the net effect on the spring balance due to the addition of the iron piece is zero, and the reading of the spring balance will remain the same .

[#260] Fluid is a substance which offers no resistance to change of
Correct Answer

(C) Shape