The sum of the static pressure and dynamic pressure at a point in a fluid flow is called the ________.
Show Hint
- kinematic pressure
- vacuum pressure
- stagnation pressure
- kinetic pressure
The Correct Option is C
Solution and Explanation
The stagnation pressure is the sum of the static pressure and dynamic pressure at a point in a fluid flow. It represents the pressure a fluid would reach if it were brought to rest isentropically (without heat exchange or dissipation).
Step 1: Definition of static and dynamic pressure.
Static pressure is the pressure exerted by a fluid at rest, while dynamic pressure is associated with the velocity of the fluid flow. The total pressure at a point in the flow is the sum of these two pressures.
Step 2: Analyze each option.
(A) Incorrect. Kinematic pressure is not a term used to describe the sum of static and dynamic pressures.
(B) Incorrect. Vacuum pressure refers to pressures lower than atmospheric pressure, not the sum of static and dynamic pressures.
(C) Correct. Stagnation pressure is the sum of static pressure and dynamic pressure.
(D) Incorrect. Kinetic pressure refers to pressure related to the motion of the fluid, but not specifically the sum of static and dynamic pressures.
Top GATE NM Fluid Mechanics and Marine Hydrodynamics Questions
- Identify the range of Reynolds number (Re) for a creeping flow.
- The ratio of the magnitudes of vorticity to rate of rotation in a fluid flow is ________.
- In a laminar boundary layer, the ratio of boundary layer thickness (\( \delta \)) to the corresponding displacement thickness (\( \delta^* \)) lies between ________.
- Which one of the following wave energy spectra is formulated for two peaks?
- According to linear water wave theory, at a point on the free surface of a regular wave, the phase difference between the free surface elevation and the horizontal water particle acceleration is ________.
Top GATE NM Fluid Mechanics Questions
- Identify the range of Reynolds number (Re) for a creeping flow.
- The ratio of the magnitudes of vorticity to rate of rotation in a fluid flow is ________.
- In a laminar boundary layer, the ratio of boundary layer thickness (\( \delta \)) to the corresponding displacement thickness (\( \delta^* \)) lies between ________.
- For a freely floating body in water, which of the following degrees of freedom has/have inherent restoring force?
Match the non-dimensional numbers in Column 1 with the corresponding definitions in Column 2:
Top GATE NM Questions
- If \( \rightarrow \) denotes increasing order of intensity, then the meaning of the words [dry \( \rightarrow \) arid \( \rightarrow \) parched] is analogous to [diet \( \rightarrow \) fast \( \rightarrow \) \(\_\_\_\_\_\_\_\_\)]. Which one of the given options is appropriate to fill the blank?
- If two distinct non-zero real variables \( x \) and \( y \) are such that \( (x + y) \) is proportional to \( (x - y) \), then the value of \( \frac{x}{y} \) is:
- Consider the following sample of numbers: \[ 9, 18, 11, 14, 15, 17, 10, 69, 11, 13 \] The median of the sample is:
- The number of coins of ₹1, ₹5, and ₹10 denominations that a person has are in the ratio 5:3:13. Of the total amount, the percentage of money in ₹5 coins is:
- For positive non-zero real variables \( p \) and \( q \), if \[ \log \left( p^2 + q^2 \right) = \log p + \log q + 2 \log 3, \] then the value of \( \frac{p^4 + q^4}{p^2 q^2} \) is: