1
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
The figure below shown a pair of pin jointed gripper tongs holding an object weighing $$2000N$$. The coefficient of friction (µ) at the gripping surface is $$0.1$$ $$XX$$ is the line of action of the input force and $$Y - Y$$ is the line of application of gripping force. If the pin joint is assumed to be frictionless, the magnitude of force $$F$$ required to hold the weight is GATE ME 2004 Engineering Mechanics - Engineering Mechanics Static and Dynamics Question 42 English
A
$$1000$$ $$N$$
B
$$2000$$ $$N$$
C
$$2500$$ $$N$$
D
$$5000$$ $$N$$
2
GATE ME 2004
MCQ (Single Correct Answer)
+1
-0.3
An incompressible fluid (kinematic viscosity $$ = 7.4 \times {10^{ - 7}}\,\,{m^2}/s,$$ specific gravity, $$0.88$$) is held between two parallel plates. If the top plate is moved with a velocity of $$0.5$$ $$m/s$$ while the bottom one is held stationary, the fluid attains a linear velocity profile in the gap of $$0.5$$ $$mm$$ between these plates; the shear stress in Pascal on the surface of bottom plate is :
A
$$65.1$$
B
$$0.651$$
C
$$6.51$$
D
$$651$$
3
GATE ME 2004
MCQ (Single Correct Answer)
+1
-0.3
A fluid flow is represented by the velocity field $$\overrightarrow V = ax\,\overrightarrow i + ay\,\overrightarrow j ,$$ where a constant . The equation of stream line passing through a point $$(1, 2)$$ is
A
$$x-2y=0$$
B
$$2x+y=0$$
C
$$2x-y=0$$
D
$$x+2y=0$$
4
GATE ME 2004
MCQ (Single Correct Answer)
+2
-0.6
For a fluid flow through a divergent pipe of length $$L$$ having inlet and outlet radii of $${R_1}$$ and $${R_2}$$ respectively and a constant flow rate of $$Q,$$ assuming the velocity to be axial and uniform at any cross- section , the acceleration at the exit is
A
$${{2Q\left( {{R_1} - {R_2}} \right)} \over {\pi LR_2^3}}$$
B
$${{2{Q^2}\left( {{R_1} - {R_2}} \right)} \over {\pi LR_2^3}}$$
C
$${{2{Q^2}\left( {{R_1} - {R_2}} \right)} \over {{\pi ^2}L{R_2}^5}}$$
D
$${{2{Q^2}\left( {{R_2} - {R_1}} \right)} \over {{\pi ^2}L{R_2}^5}}$$
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