Engineering :: Hydraulics and Fluid Mechanics
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| 151. |
When an internal mouthpiece is running full, the discharge through the mouthpiece is twice the discharge when it is running free. |
Answer: Option B
Explanation:
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| 152. |
The discharge through a convergent mouthpiece is |
| A. |
equal to |
B. |
one-half |
| C. |
three fourth |
D. |
double |
Answer: Option D
Explanation:
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| 153. |
In an external mouthpiece, the absolute pressure head at vena contracta is |
| A. |
less than |
B. |
more than |
Answer: Option A
Explanation:
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| 154. |
In an internal mouthpiece, the absolute pressure head at vena contracta is |
| A. |
less than |
B. |
more than |
Answer: Option A
Explanation:
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| 155. |
In an external or internal mouthpiece, the absolute pressure head at vena contracta is zero when atmospheric pressure head is 10.3 m of water. |
Answer: Option A
Explanation:
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| 156. |
In a convergent mouthpiece, the absolute pressure head at vena contracta is the same as the of the atmosphere. |
Answer: Option A
Explanation:
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| 157. |
An opening in the side of a tank or vessel such that the liquid surface with the tank is below the top edge of the opening, is called. |
| A. |
weir |
B. |
notch |
| C. |
orifice |
D. |
none of these |
Answer: Option B
Explanation:
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| 158. |
A notch is, usually, made of a metallic plate. |
Answer: Option A
Explanation:
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| 159. |
A notch is used to measure |
| A. |
pressure |
B. |
Disagree |
| C. |
velocity |
D. |
volume |
Answer: Option B
Explanation:
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| 160. |
If the coefficient of discharge is 0.6, then the discharge over a right angled notch is |
| A. |
0.417 H5/2 |
B. |
1.417 H5/2 |
| C. |
4.171 H5/2 |
D. |
7.141 H5/2 |
Answer: Option B
Explanation:
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