Engineering :: Fluid Mechanics and Hydraulic Machines
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351. |
The angle of taper on a draft tube is |
A. |
Less than 7 |
B. |
Around 10? |
C. |
Around 15? |
D. |
More than 15? |
E. |
More than 20? |
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Answer: Option A
Explanation:
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352. |
When the dynamic viscosity of a fluid is 0.6 poise and specific gravity is 0.6, the kinematic viscosity of that fluid will be |
A. |
0.36 poise |
B. |
0.6 poise |
C. |
1 poise |
D. |
None of the above |
Answer: Option C
Explanation:
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353. |
When a liquid rotates at a angular velocity above a vertical axis as a rigid body, the pressure intensity varies |
A. |
inversely with radial distance |
B. |
inversely with the square of radial distance |
C. |
directly with radial distance |
D. |
Directly with square of the radial distance |
Answer: Option D
Explanation:
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354. |
1 Kilo-Pascal is the same as |
A. |
1000 n/mm2 |
B. |
1000 N/cm |
C. |
1000 N/cm2 |
D. |
1000 N/m2 |
E. |
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Answer: Option D
Explanation:
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355. |
Surface tension is due to |
A. |
cohesion only |
B. |
adhesion only |
C. |
cohesion and adhesion only |
D. |
neither cohesion nor adhesion |
Answer: Option A
Explanation:
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356. |
The motion of air mass in a tornado is |
A. |
forced vertex at the centre and free vortex outside |
B. |
forced cortex at the centre as well as outside |
C. |
free vortex at the centre and forced vortex outside |
D. |
free vortex at the centre as well as outside |
Answer: Option A
Explanation:
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357. |
The size of a venturimeter is specified by |
A. |
fluid pressure |
B. |
Discharge channel |
C. |
pipe diameter |
D. |
pipe diameter and throat diameter |
Answer: Option D
Explanation:
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358. |
Pascal-second is the unit of |
A. |
pressure |
B. |
surface |
C. |
kinematic viscosity |
D. |
dynamic viscosity |
Answer: Option D
Explanation:
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359. |
As the temperature increases, the viscosity of a gas |
A. |
increases, increases |
B. |
decreases, decreases |
C. |
increases, decreases |
D. |
decreases, increases |
Answer: Option C
Explanation:
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360. |
The centre of buoyancy always coincides with |
A. |
centre of gravity of the body |
B. |
centroid of the volume displaced |
C. |
metacentre |
D. |
None of the above |
Answer: Option B
Explanation:
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