#80.
An open cylindrical vessel 1.3 m in diameter and 2.1 m high is 2/3 full of water. If rotated about the vertical axis at a constant angular speed of 90 rpm. Determine how high is the pararboloid formed of the water surface in meter.
A
1.91 m
B
1.81 m
C
1.29 m
D
0.92 m
Answer: 1.91 m
#81.
An open cylindrical vessel 1.3 m in diameter and 2.1 m high is 2/3 full of water. If rotated about the vertical axis at a constant angular speed of 90 rpm. Determine the amount of water in liters that will be spilled out.
A
235.5 liters
B
191 liters
C
300 liters
D
338 liters
Answer: 338 liters
#82.
An open cylindrical vessel 1.3 m in diameter and 2.1 m high is 2/3 full of water. If rotated about the vertical axis at a constant angular speed of 90 rpm.What should have been the least height of the vessel so that no water is spilled out?
A
0.955 m
B
1.91 m
C
2.355 m
D
3.5 m
Answer: 2.355 m
#83.
A rectangular irrigation canal is 6 m wide contains water 1 m deep. It has a hydraulic slope of 0.001 and a roughness coefficient of 0.013. Evaluate the mean velocity of the water in the canal in m/s.
A
2.10 m/s
B
2.01 m/s
C
1.21 m/s
D
1.62 m/s
Answer: 2.01 m/s
#84.
A rectangular irrigation canal is 6 m wide contains water 1 m deep. It has a hydraulic slope of 0.001 and a roughness coefficient of 0.013. Evaluate the discharge in the canal in cumecs.
A
16.7 cumecs
B
20.1 cumecs
C
14.6 cumecs
D
12.06 cumecs
Answer: 12.06 cumecs
#85.
A rectangular irrigation canal is 6 m wide contains water 1 m deep. It has a hydraulic slope of 0.001 and a roughness coefficient of 0.013. What would be the depth of the canal , in meters using the most economic proportions but adhering to the same discharge and slope?
A
0.67 m
B
2.67 m
C
1.07 m
D
1.67 m
Answer: 1.67 m
#86.
A soil sample has a dry unit weight of 0.17 kN/m3 and a void ratio of 0.60. Evaluate the specific gravity of the soil.
A
2.77
B
2.42
C
2.27
D
2.65
Answer: 2.77
#87.
A soil sample has a dry unit weight of 0.17 kN/m3 and a void ratio of 0.60. Obtain the unit weight of the sample in kN/m3 when fully saturated.
A
21.26 kN/m3
B
20.66 kN/m3
C
19.32 kN/m3
D
18.16 kN/m3
Answer: 20.66 kN/m3
#88.
A soil sample has a dry unit weight of 0.17 kN/m3 and a void ratio of 0.60. What is the hydraulic gradient at quicksand condition?
A
1.106
B
1.01
C
1.16
D
1.15
Answer: 1.106
#89.
An irrigation canal with trapezoidal cross-sections has the following dimensions: Bottom width = 2 m, depth of water = 0.90 m, side slope is 1.5 horizontal to vertical, slope of canal bed = 0.001, coefficient of roughness = 0.025. The canal will serve clay-loam Riceland for which the duty of water per hectare is 3 liters per hectare. Determine the hydraulic radius of the canal in liters.
A
0.775
B
0.575
C
0.757
D
0.557
Answer: 0.575
#90.
An irrigation canal with trapezoidal cross-sections has the following dimensions: Bottom width = 2 m, depth of water = 0.90 m, side slope is 1.5 horizontal to vertical, slope of canal bed = 0.001, coefficient of roughness = 0.025. The canal will serve clay-loam Rice land for which the duty of water per hectare is 3 liters per hectare. Determine the velocity of the water in m/sec.
A
0.784 m/s
B
0.674 m/s
C
0.874 m/s
D
0.764 m/s
Answer: 0.874 m/s
#91.
An irrigation canal with trapezoidal cross-sections has the following dimensions: Bottom width = 2 m, depth of water = 0.90 m, side slope is 1.5 horizontal to vertical, slope of canal bed = 0.001, coefficient of roughness = 0.025. The canal will serve clay-loam Rice land for which the duty of water per hectare is 3 liters per hectare. Determine the number of ha served by the irrigation canal.
A
879 ha
B
897 ha
C
769 ha
D
987 ha
Answer: 879 ha
#92.
A ship having a displacement of 20 000 metric tones enters a harbor of fresh water. the ship captain recorded a draft of 8.4 m while the ship was still in seawater(1.03). Obtain the draft in meters of the ship in fresh water if the horizontal section of the ship below the water line is 3000 m2 in both instances.
A
8.954 m
B
8.594 m
C
8.40 m
D
0.194 m
Answer: 8.594 m
#93.
A solid block having a sp. gr. of 3.5 is placed in a container containing liquid having sp. gr. of 13.6. If the volume of the block is 0.020 cu.m, obtain the weight of the block in kN.
A
0.678
B
0.768
C
0.567
D
0.687
Answer: 0.687
#94.
A solid block having a sp. gr. of 3.5 is placed in a container containing liquid having sp. gr. of 13.6. Evaluate the percentage volume of the block that floats above the liquid surface.
A
74.3%
B
25.7%
C
5.15%
D
94.85%
Answer: 74.3%
#95.
A solid block having a sp. gr. of 3.5 is placed in a container containing liquid having sp. gr. of 13.6. Obtain the downward force kN required to make it completely submerged in the liquid.
A
0.89 kN
B
1.98 kN
C
9.18 kN
D
1.28 kN
Answer: 1.98 kN
#96.
A rectangular gate 1.5 m wide and 3 m high is vertically submerged in water with its top edge horizontal and 2 m below the water surface.Evaluate the total force acting on one side of the gate in, kN.
A
154.51 kN
B
155.28 kN
C
186.30 kN
D
115.54 kN
Answer: 154.51 kN
#97.
A rectangular gate 1.5 m wide and 3 m high is vertically submerged in water with its top edge horizontal and 2 m below the water surface. Find the location of the force acting on one side of the gate, from the center of gravity of the plate in meters.
A
1.75
B
0.375
C
1.5
D
0.214
Answer: 0.214
#98.
A rectangular gate 1.5 m wide and 3 m high is vertically submerged in water with its top edge horizontal and 2 m below the water surface. Find the location of the force acting on one side of the gate, from the liquid surface in meters.
A
2.214 m
B
1.5 m
C
3.714 m
D
2 m
Answer: 3.714 m
#99.
If the velocity head at one point of a pipeline is 5 m., what would be the velocity head, in meters, at the point of the pipeline if the velocity is increased by 3 times?