The Bowen ratio is defined as : Ratio of heat and vapour diffusivities. Proporti

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Question
The Bowen ratio is defined as :
Options
A. Ratio of heat and vapour diffusivities.
B. Proportionality constant between vapour heat flux and sensible heat flux.
C. Ratio of actual evapotranspiration and potential evapotranspiration.
D. Proportionality constant between heat energy used up in evaporation and the bulk radiation from a water body.

Correct Answer

Proportionality constant between heat energy used up in evaporation and the bulk radiation from a water body.

GATE Exam Questions problems

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1. For the strip footing on a saturated clay, for the given failure surface as shown in the below figure, the bearing capacity equation takes the form : (where C_u - undrained shear strength ?_u - angle of internal friction B - width of strip footing qc - ultimate bearing capacity of soil)
Options
A. 5.7 C_u
B. 5.14 C_u
C. 4? C_u
D. 2? C_u

2. The order or the flexibility matrix for a structure is,
Options
A. equal to the number of redundant forces
B. more than the number of redundant forces
C. less than the number of redundant forces
D. equal to the number of redundant forces plus three

3. A waste water sample diluted to 100 times with aeration water had an initial dissolved oxygen (DO) of 7.0 mg/l and after 5 days of incubation at 20�C, the DO was zero. The BOD of waste water is :
Options
A. 700 mg/l
B. 100 mg/l
C. cannot be determined
D. 7mg/l

4. A roundabout is provided with an average entry width of 8.4 m, width of weaving section as 14 m, and length of the weaving section between channelizing islands as 35 m. The crossing traffic and total traffic on the weaving section are 1000 and 2000 PCU per hour respectively. The nearest rounded capacity of the roundabout (in PCU per hour) is
Options
A. 3300
B. 3700
C. 4500
D. 5200

7. The proposed dam shown in the below figure is 90 m long and coefficient of permeability of the soil is 0.0013 mm/second. The quantity of water (m³) that will be lost per day, by seepage is (rounded to the nearest number):
Options
A. 55
B. 57
C. 59
D. 61

10. A 1 : 30 model of an ogee spillway crest records an acceleration of 1.3 m/s² at a certain location. The homologous value of the acceleration in the prototype in m/s² , is
Options
A. 0.043
B. 0.237
C. 1.300
D. 7.120

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