1
GATE ME 2003
MCQ (Single Correct Answer)
+2
-0.6
A syringe with a frictionless plunger contains water and has at its end a $$100$$ $$mm$$ long needle of $$1$$ $$mm$$ diameter. The internal diameter of the syringe is $$10$$ $$mm.$$ Water density is $$1000\,\,kg/{m^3}.$$ . The plunger is pushed in at $$10$$ $$mm/s$$ and the water comes out as a jet. GATE ME 2003 Fluid Mechanics - Turbulent Flow Question 7 English

Assuming ideal flow, the force $$F$$ in Newton’s required on the plunger to push out the water is

A
$$0$$
B
$$0.04$$
C
$$0.13$$
D
$$1.15$$
2
GATE ME 2003
MCQ (Single Correct Answer)
+2
-0.6
A syringe with a frictionless plunger contains water and has at its end a $$100$$ $$mm$$ long needle of $$1$$ $$mm$$ diameter. The internal diameter of the syringe is $$10$$ $$mm.$$ Water density is $$1000\,\,kg/{m^3}.$$ . The plunger is pushed in at $$10$$ $$mm/s$$ and the water comes out as a jet. GATE ME 2003 Fluid Mechanics - Turbulent Flow Question 6 English

Neglect losses in the cylinder and assume fully developed laminar viscous flow throughout the needle; the Darcy friction factor is $${64/R_e}$$. Where $${R_e}$$ is the Reynolds number. Given that the viscosity of water is $$1.0 \times {10^{ - 3}}\,\,kg/m\,\,\,s,$$ the force $$F$$ in newtons required on the plunger is

A
$$0.13$$
B
$$0.16$$
C
$$0.3$$
D
$$4.4$$
3
GATE ME 1998
MCQ (Single Correct Answer)
+2
-0.6
The discharge velocity at the pipe exit in figure is GATE ME 1998 Fluid Mechanics - Turbulent Flow Question 1 English
A
$$\sqrt {2gH} $$
B
$$\sqrt {2gh} $$
C
$$\sqrt {g\left( {H + h} \right)} $$
D
$$0$$
4
GATE ME 1994
Fill in the Blanks
+2
-0
Fluid is flowing with an average velocity of $$V$$ through a pipe of diameter $$d.$$ over a length of $$L,$$ the “head” loss is given by $${{fL{V^2}} \over {2gD}}.$$ The friction factor, $$f,$$ for laminar flow in terms of Reynolds number ($$Re$$) is ______________ (fill the blank)
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