#40.
The field weight of soil sample is 1900 kg/cubic meters and the unit weight of the soil particle is 2600 kg/m3. Compute the dry unit weight if the moisture content is 12%.
A
19.02 kN/m3
B
17.63 kN/m3
C
18.24 kN/m3
D
16.64 kN/m3
Answer: 16.64 kN/m3
#41.
The field weight of soil sample is 1900 kg/cubic meters and the unit weight of the soil particle is 2600 kg/m3. Compute the void ratio.
A
0.501
B
0.562
C
0.533
D
0.523
Answer: 0.533
#42.
The field weight of soil sample is 1900 kg/cubic meters and the unit weight of the soil particle is 2600 kg/m3. Compute the degree of saturation.
A
54.25%
B
58.54%
C
52.45%
D
54.58%
Answer: 58.54%
#43.
A rectangular channel is 6.2 m wide by 1.2 m deep is lined with a smooth stone, well laid and has a hydraulic slope of 0.001. Using n = 0.013.
What is the capacity of the channel in m3/s?
A
20.33 m3/s
B
18.34 m3/s
C
14.26 m3/s
D
16.43 m3/s
Answer: 16.43 m3/s
#44.
A rectangular channel is 6.2 m wide by 1.2 m deep is lined with a smooth stone, well laid and has a hydraulic slope of 0.001. Using n = 0.013.
What savings in earth excavation could have been offered by using more favorable proportions but adhering to the same delivery and slope?
A
0.3937 m2
B
0.2739 m2
C
0.4201 m2
D
Not possible
Answer: 0.3937 m2
#45.
A rectangular channel is 6.2 m wide by 1.2 m deep is lined with a smooth stone, well laid and has a hydraulic slope of 0.001. Using n = 0.013.
What savings in lining per meter length by using more favorable proportions but adhering to the same delivery and slope?
A
1.092 m2/m
B
2.192 m2/m
C
2.092 m2/m
D
1.192 m2/m
Answer: 1.092 m2/m
#46.
A saturated soil has a weight of 18.85 kN/m3 and a water content of 32.05%. Determine the specific gravity of the soil.
A
2.47
B
2.24
C
2.74
D
2.44
Answer: 2.74
#47.
A cubic meter of soil in its natural state weighs 17.5 kN. After being dried, it weighs 15.08 kN. The specific gravity of the soil is 2.70. Determine the void ratio of the original soil sample.
A
0.76
B
0.66
C
0.75
D
0.67
Answer: 0.76
#48.
A silt clay has a plastic limit of 25 and a plastic index of 30. If the liquidity index is 0.33, what is the natural moisture content of soil in percent?
A
28.40%
B
26.32%
C
30.20%
D
34.90%
Answer: 34.90%
#49.
A soil sample has a void ratio of 0.76, spgr of 2.74 and a degree of saturation of 85%. What is the unit weight?
A
1.92 Tonnes/m3
B
19.2 Tonnes/m3
C
1.29 Tonnes/m3
D
12.9 Tonnes/m3
Answer: 1.92 Tonnes/m3
#50.
The specific gravity of the soil is 2.65. The void ratio is 0.50 and water content is 7.94%. What is its wet density?
A
1907 kg/m3
B
2650 kg/m3
C
1938 kg/m3
D
1839 kg/m3
Answer: 1907 kg/m3
#51.
Find the mass density of air at 310 kPa absolute and at temperature of 33 oC.
A
4.56 kg/ m3
B
3.53 kg/ m3
C
2.54 kg/ m3
D
4.67 kg/ m3
Answer: 4.56 kg/ m3
#52.
A reservoir of glycerin has a mass of 1, 200 kg and a volume of 0.952 cu. m. Find its weight, W.
A
11.772 kN
B
12.37 kN
C
12.61 kN
D
1, 000 kg
Answer: 11.772 kN
#53.
A reservoir of glycerin has a mass of 1, 200 kg and a volume of 0.952 cu. m. Find its unit weight, λ.
A
11. 77 kN/m3
B
12. 37 kN/m3
C
12. 61 kN/m3
D
11, 000.42 kg/m3
Answer: 12. 37 kN/m3
#54.
A reservoir of glycerin has a mass of 1, 200 kg and a volume of 0.952 cu. m. What is its mass density, ρ.
A
1, 000 kg/m3
B
9, 810 kg/m3
C
1, 260.5 kg/m3
D
1, 23.67 kg/m3
Answer: 1, 260.5 kg/m3
#55.
A reservoir of glycerin has a mass of 1, 200 kg and a volume of 0.952 cu. m. What is its specif gravity, s.
A
1.23
B
1.17
C
1.24
D
1.26
Answer: 1.26
#56.
The specific gravity of certain oil is 0.82. What is its specific weight?
A
51.168 lb/ft3
B
51.168 kN/m3
C
8.44 lb/ft3
D
8.44 kN/m3
Answer: 51.168 lb/ft3
#57.
The specific gravity of certain oil is 0.82. What is its mass density?
A
1.59 lb/cu.ft
B
1.59 slugs/cu.ft
C
840 kg/cu.m
D
8.4 slugs/cu.ft
Answer: 1.59 slugs/cu.ft
#58.
If an object has a mass of 22 kg at sea level. What will be its weight at a point where the acceleration due to gravity is 9.75 m/s2?
A
215.82N
B
215.4N
C
214.5N
D
218.15N
Answer: 214.5N
#59.
What is the weight of a 45-kg boulder if it is brought to a place where the acceleration due to gravity is 395 m/s per minute?