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GATE 2020 Revision Test 4 (App update required to attempt this test)

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Question 1

The staff reading observed by the Height of Collimation method on a 4m level staff held 2.8cm away from the plumb line is 1. 567m.Determine the true staff reading observed.

Question 2

Which one of the following is secondary pollutant?

Question 3

In a Marshall sample, the bulk specific gravity of mix and aggregates are 2.324 and 2.546 respectively. The sample includes 5% of bitumen (by total weight of mix) of specific gravity 1.10 the theoretical maximum specific gravity of mix is 2.441 the void filled with bitumen(VFB) in Marshall sample (in %) is ?

Question 4

An annual flood series contains 100 years of flood data. For a return period of 200 years the Gumbel's reduced variate can be taken as ________

Question 5

A beam with equal overhangs as shown below have supports adjusted such that the maximum bending moment is the minimum possible.

The supports are positioned such that a = _____ L.

Question 6

22 MLD of water is flowing through a 3 km long pipe of diameter 50 cm. The chlorine at the rate of 40 kg/d is applied at the entry of this pipe so that disinfected water is obtained at the exit. There is a proposal to increase the flow through this pipe to 28 MLD. Assuming the dilution coefficient, n = 1. The minimum amount of chlorine to be applies to achieve the same degree of disinfection for the enhanced flow is _____ kg per day.

Question 7

A water supply system is designed for a town with population of 2,50,000. Determine the fire demand (in ml/min) using empirical relationship and the Match List I and List II

Question 8

A traffic survey conducted on a road yields an average daily traffic count of 5000 vehicles. The axle load distribution on the same road is given in the following table

Description: D:\GradeStack Courses\GATE Tests (Sent by Ravi)\Civil-Engineering-2014_files\image298.png
The design period of the road is 15 years, the yearly traffic growth rate is 7.5% and the load safety factor (LSF) is 1.3. If the vehicle damage factor (VDF) is calculated from the above data, the design traffic (in million standard axle load, MSA) is ________. (standard axle load = 8160kg 8.2 tonnes)

Question 9

A solid circular shaft has a uniform diameter of 0.0508 m and length is 3.048 m long. At its midpoint, 65 hp is delivered to the shaft by means of a belt passing over a pulley. This power is used to drive two machines, one at the left end of the shaft consuming 25 hp and one at the right end consuming 40 hp. The shaft turns at 200 rev/min, then the maximum shear stress developed in the shaft is ________ Mpa.
[Take G = 82.74 GPa and assume elastic action]

Question 10

A rectangular concrete beam having cross section 250 × 600 m is prestressed by 4 wires of 14 mm diameter located 200 mm above the bottom of the beam. The stress in the wires is 700 N/mm2.
What is the allowed UDL that can be provided in a beam of length 6 m without causing any tension in the beam. The beam already has a concentrated load of 10 kN applied on its midpoint.

Question 11

A flat plate 2 m long and 1.5 m wide is towed at 25 km/h in water. The drag and lift coefficients are found to be 0.20 and 0.60 respectively. The power (in kW) required to keep the plate in motion is

Question 12

The sides of a square area were measured by a chain of length 20 m and the area was found to be 3200 m2, but it was found that the original length of the chain was 19.8 m. Find the correct area.

Question 13

Consider the deformable pin-jointed truss with loading, geometry and section properties as shown in the figure.

Given that E = 2 × 1011 N/m2, A = 10 mm2, L = 1m and P = 1kN. The vertical displacement at D is (in mm, upto two decimal pt)_________

Question 14

A water pump is installed on a well to lift water and to irrigate wheat crop, sown over 4 hectares of land. The duty for wheat is 1728 hectares / cumecs on the field and pump efficiency is 46%. If the lowest water level is 8 metres below the highest portion of the field and assuming negligible field channel losses, the minimum required input (HP) of the pump is _________ [rounded to 2 decimal places]

Question 15

A model with a characteristic length of 2.5 m of a spillway was made, with a discharge of 0.2 m3/sec. Calculate the value of discharge (m3/sec) in the prototype having a characteristic length of 125m. (closest to two places after decimal)
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May 16ESE & GATE CE