1
GATE ME 2001
Subjective
+5
-0
Water $$\left( {\rho = 1000\,\,kg/{m^3}} \right)$$ flows horizontally through a nozzle into the atmosphere under the conditions given below. (assume steady state flow). GATE ME 2001 Fluid Mechanics - Fluid Dynamics Question 25 English

At inlet: $$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$ At outlet:
$${A_1} = {10^{ - 3}}{m^2};\,$$ $$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$ $${A_2} = {10^{ - 4}}{m^2};$$
$${V_1} = 2\,m/\sec ;$$ $$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$$$\,\,\,\,\,\,\,$$ $${P_2} = {P_{atm}}$$
$${P_1} = 3 \times {10^5}\,Pa\,(gauge)$$

Determine the external horizontal force needed to keep the nozzle

2
GATE ME 2001
MCQ (Single Correct Answer)
+2
-0.6
The horizontal and vertical hydrostatic forces $${F_x}$$ and $${F_y}$$ on the semi-circular gate, having a width $$'w'$$ into the plane of figure, are GATE ME 2001 Fluid Mechanics - Fluid Statics Question 16 English
A
$${F_x} = \rho ghrw$$ and $${F_y} = 0$$
B
$${F_x} = 2\rho ghrw$$ and $${F_y} = 0$$
C
$${F_x} = 2\rho ghrw$$ and $${F_y} = \rho gw{r^2}/2$$
D
$${F_x} = 2\rho ghrw$$ and $${F_y} = \pi \,\,\rho gw{r^2}/2$$
3
GATE ME 2001
MCQ (Single Correct Answer)
+2
-0.6
The $$2$$ - $$D$$ flow with, velocity $$\overrightarrow v = \left( {x + 2y + 2} \right)\overrightarrow i + \left( {4 - y} \right)\overrightarrow j $$ is
A
Compressible and irrotational
B
Compressible and not irrotational
C
Inompressible and
D
Inompressible and not irrotational
4
GATE ME 2001
MCQ (Single Correct Answer)
+1
-0.3
A static fluid can have
A
Non-zero normal and shear stress
B
Negative normal stress and zero shear stress
C
Positive normal stress and zero shear stress
D
Zero normal stress and non-zero shear stress
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