MCQ
Pressure head in Bernoulli's equation is
- A$\frac{{P\rho }}{g}$
- ✓$\frac{{P}}{\rho g}$
- C$\rho g$
- D$P\rho g$
✓
Answer
Correct option: B.
$\frac{{P}}{\rho g}$
b
Bernoulli Equation is principally conservation of energy equation in fluids, relating the pressure, velocity of fluid flowing and gravitational potential of liquid at some point.
Bernoulli Equation is principally conservation of energy equation in fluids, relating the pressure, velocity of fluid flowing and gravitational potential of liquid at some point.
It is given as
$\frac{P}{\rho g}+h+\frac{1}{2} \frac{v^{2}}{g}=$ constant
where $\frac{P}{\rho g}$ is the pressure head.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
In the game of see$-$saw, what should be the displacement of boy $B$ from right edge to keep the see$-$saw in equilibrium? $(M = 40\ kg, M_2 = 60\ kg.)$
→The volume of an ideal gas is $1$ litre and its pressure is equal to $72cm$ of mercury column. The volume of gas is made $900\, cm^3$ by compressing it isothermally. The stress of the gas will be ...... $cm$ (mercury)
→Figure shows the position of a particle moving on the $X-$axis as a function of time.
→A force vector applied on a mass is represented as $\vec F = 6\hat i - 8\hat j + 10\hat k$ and accelerates with $1\,m/{s^2}$. What will be the mass of the body
→Two trains $A$ and $B$ are moving with speeds $20 \mathrm{~m} / \mathrm{s}$ and $30 \mathrm{~m} / \mathrm{s}$ respectively in the same direction on the same straight track, with $B$ ahead of $A$. The engines are at the front ends. The engine of train $A$ blows a long whistle.
→Assume that the sound of the whistle is composed of components varying in frequency from $f_1=800 \mathrm{~Hz}$ to $f_2=1120 \mathrm{~Hz}$, as shown in the figure. The spread in the frequency (highest frequency - lowest frequency) is thus $320 \mathrm{~Hz}$. The speed of sound in still air is $340 \mathrm{~m} / \mathrm{s}$.
$1.$ The speed of sound of the whistle is
$(A)$ $340 \mathrm{~m} / \mathrm{s}$ for passengers in $A$ and $310 \mathrm{~m} / \mathrm{s}$ for passengers in $B$
$(B)$ $360 \mathrm{~m} / \mathrm{s}$ for passengers in $A$ and $310 \mathrm{~m} / \mathrm{s}$ for passengers in $B$
$(C)$ $310 \mathrm{~m} / \mathrm{s}$ for passengers in $A$ and $360 \mathrm{~m} / \mathrm{s}$ for passengers in $B$
$(D)$ $340 \mathrm{~m} / \mathrm{s}$ for passengers in both the trains
$2.$ The distribution of the sound intensity of the whistle as observed by the passengers in train $\mathrm{A}$ is best represented by
$Image$
$3.$ The spread of frequency as observed by the passengers in train $B$ is
$(A)$ $310 \mathrm{~Hz}$ $(B)$ $330 \mathrm{~Hz}$ $(C)$ $350 \mathrm{~Hz}$ $(D)$ $290 \mathrm{~Hz}$
Give the answer question $1,2$ and $3.$
Which of the following circular rods. (given radius $ r$ and length $l$ ) each made of the same material as whose ends are maintained at the same temperature will conduct most heat
→In a sonometer wire, the tension is maintained by suspending a $50.7 kg$ mass from the free end of the wire. The suspended mass has a volume of $ 0.0075 \, m^3$. The fundamental frequency of the wire is $260 Hz$. If the suspended mass is completely submerged in water, the fundamental frequency will become .... $Hz$ (take $g = 10 ms^{-2}$)
→Solid cylinders of radii ${r_1},\,{r_2}$ and ${r_3}$ roll down an inclined plane from the same place simultaneously. If ${r_1} > {r_2} > {r_3}$, which one would reach the bottom first
→A liquid boils when its vapour pressure is equal to:
How much force is required to produce an increase of $0.2\%$ in the length of a brass wire of diameter $0.6\, mm$ (Young’s modulus for brass = $0.9 \times {10^{11}}N/{m^2}$)
→