Engineering :: Hydraulics and Fluid Mechanics
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| 171. |
The length of a liquid stream while flowing over a weir |
| A. |
expands |
B. |
does not change |
| C. |
contracts |
Answer: Option C
Explanation:
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| 172. |
When the corfficient of discharge (Cd) is 0.623, then the general equation for discharge over a rectangular weir is |
| A. |
1.84 (L-0.1 nH) H3/2 |
B. |
1.84 (L-nH) H2 |
| C. |
1.84 (L-0.1 nH) H5/2 |
D. |
1.84 (L-nH) H3 |
Answer: Option A
Explanation:
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| 173. |
When the end contractions of the weir are suppressed, then number of end contractions (n) are taken as zero |
Answer: Option A
Explanation:
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| 174. |
According to Bazin, the coefficient of discharge varies with the height of water over the sill of a weir. |
Answer: Option A
Explanation:
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| 175. |
The Cippoletti weir is a |
| A. |
rectangular |
B. |
triangular |
| C. |
trapezoidal |
D. |
circular |
Answer: Option C
Explanation:
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| 176. |
The Francis formula for the discharge over Cippoletti weir is |
| A. |
1.84 LH1/2 |
B. |
1.84 LH |
| C. |
1.84 LH3/2 |
D. |
1.84 LH5/2 |
Answer: Option C
Explanation:
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| 177. |
A weir is said to be narrow-crested weir, if the width of the crest of the weir is |
| A. |
equal to |
B. |
less than |
| C. |
more than |
Answer: Option B
Explanation:
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| 178. |
A wwir is said to be broad crested weir. If the width of the crest of the weir is |
| A. |
equal to |
B. |
less than |
| C. |
more than |
Answer: Option C
Explanation:
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| 179. |
In a broad-crested weir, the discharge is maximum if the head of water on the downstream side of weir is |
| A. |
equal to |
B. |
one-third |
| C. |
two-third |
D. |
three-fourth |
Answer: Option C
Explanation:
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| 180. |
The maximum discharge over a broad crested weir is |
| A. |
0.384 Cd x L x H1/2 |
B. |
0.384 Cd x L x H3/2 |
| C. |
1.71 Cd x L x H1/2 |
D. |
1.71 Cd x L x H3/2 |
Answer: Option D
Explanation:
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