GATE CE branch:ce PYQs & Answers — Page 98

Questions 971–980 of 1300. Imported answers require independent review unless marked reviewed.

Topic practice 1300 questionsPage 98 of 130

The maximum number of vehicles observed in any five minute period during the peak hour is 160. If the total flow in the peak hour is 1000 vehicles, the five minute peak hour factor (round off to 2 decimal places) is ________.

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The characteristic compressive strength of concrete required in a project is 25

and the standard deviation in the observed compressive strength expected at site is 4

. The average compressive strength of cubes tested at different water-cement (

) ratios using the same material as is used for the project is given in the table.

(%)	45	50	55	60
Average compressive strength of cubes ( )	35	25	20	15

The water-cement ratio (in percent, round off to the lower integer) to be used in the mix is ______

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A circular duct carrying water gradually contracts from a diameter of 30

to 15

. The figure (not drawn to scale) shows the arrangement of differential manometer attached to the duct.

Diagram for Civil Engineering question 22

When the water flows, the differential manometer shows a deflection of 8

of mercury (

). The values of specific gravity of mercury and water are 13.6 and 1.0, respectively. Consider the acceleration due to gravity,

. Assuming frictionless flow, the flow rate (in

, round off to 3 decimal places) through the duct is ________.

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The data from a closed traverse survey PQRS (run in the clockwise direction) are given in the table

Line	Included angle (in degrees)
PQ	88
QR	92
RS	94
SP	89

The closing error for the traverse PQRS (in degrees) is ______

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The probability that the annual maximum flood discharge will exceed 2500

, at least once in next 5 years is found to be 0.25. The return period of this flood event (in years, round off to 1 decimal place) is ________.

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A vehicle is moving on a road of grade +4% at a speed of 20

. Consider the coefficient of rolling friction as 0.46 and acceleration due to gravity as 10

. On applying brakes to reach a speed of 10

, the required braking distance (in

, round off to nearest integer) along the horizontal, is ______

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A soil has specific gravity of its solids equal to 2.65. The mass density of water is 1000

. Considering zero air voids and 10% moisture content of the soil sample, the dry density (in

, round off to 1 decimal place) would be ________.

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The command area of a canal grows only one crop, i.e., wheat. The base period of wheat is 120 days and its total water requirement,

, is 40

. If the canal discharge is 2

, the area, in hectares, rounded off to the nearest integer, which could be irrigated (neglecting all losses) is ______

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A concentrated load of 500

is applied on an elastic half space. The ratio of the increase in vertical normal stress at depths of 2

and 4

along the point of the loading, as per Boussinesq’s theory, would be ________.

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Construction of a new building founded on a clayey soil was completed in January 2010. In January 2014, the average consolidation settlement of the foundation in clay was recorded as 10

. The ultimate consolidation settlement was estimated in design as 40

. Considering double drainage to occur at the clayey soil site, the expected consolidation settlement in January 2019 (in

, round off to the nearest integer) will be ______

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GATE CE branch:ce PYQs

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Question 25