BARC OCES 2022 Quiz 21 for ESE & GATE CE Exams

Question 1

The absolute minimum radius for a horizontal curve designed for a speed of 80 kmph, given the permissible values of super elevation and coefficient of friction are 0.05 and 0.15 respectively

Question 2

If the stadia interval and the focal length of tacheometer are 12 mm and 24 cm respectively. then the multiplying constant of the tacheometer is equal to

Question 3

A three hinged symmetric parabolic arch of span 20 meters and rise 5 meters is hinged at the crown and springing. It supports a uniformly
distributed load of 2 tonnes per meter run of the span. The horizontal thrust in tonnes at each of the springing

Question 4

A circular shaft was initially subjected to bending moment and then was subjected to torsion. If the magnitude of bending moment is found to be the same as that of the torque, then the ratio of maximum bending stress to shear stress would be

Question 5

50 gm of oven dried soil of five sizes shown in the table is taken for hydrometer analysis 1000 cc of suspension is prepared and filled in a jar up to 30 cm height

If specific gravity of soil solids is 2.7 and viscosity of soil water suspension is 1 x 10^-6 kN sec/m², the time required for all the particles to settle to the bottom of the jar is

Question 6

The ratio of crippling load for the beam freely supported at both ends & to that when fixed at both ends will be-

Question 7

The base width of an elementary profile of a gravity dam of height H is b. The specific gravity of the material of the dam is G and uplift pressure coefficient is K. The correct relation tor no tension at the heel is given by

Question 8

A stone weights 450 N in air and 250 N in water. The volume of the stone is:

Question 9

If B.O.D of waste water sample after 5 days incubation at 20°C is 100 mg/l, deoxygenation rate constant at 20°C is 0.1 per day, ultimate B.O.D will be_______(take Base 10)

Question 10

As per the Indian Standard (IS) 800:2007, with respect to serviceability and when transverse stiffeners are not provided, the d/t_w ratio of the web should be less than or equal to (depth of web = d; thickness of web = t_w; and yield stress ratio of web = ε_w)

Question 11

A roundabout is provided with an average entry width of 8.4 meter, width of weaving section as 14 m and length of the weaving section between channelizing islands as 35 m. The crossing traffic and total on the weaving section are 1000 and 2000 PCU per hour respectively. The nearest rounded capacity of the roundabout (in PCU per hour) is:

Question 12

In a two peg test of a dumpy level, the following readings were taken,

The distance between peg A & B is 100 m.
The correction required for collimation error is

Question 13

Determine the degree of static and kinematic indeterminacy of the frame structure as shown in the figure:

Question 14

A cantilever carries a uniformly distributed load from fixed end to the mid-span in the first case and a UDL of same intensity from mid-span to the free end in the second case. The ratio of maximum deflections in the two cases is

Question 15

In a typical compaction curve as indicated in the diagram, points ‘A’ and ‘B’ have dry densities. Choose the most appropriate statement from the following:

Question 16

A beam-column having overall depth and width is 550 mm and 250 mm. If torsional moment for this beam is 30 kN.m then twisting moment will be-

Question 17

A crop requires a total water depth of 90 cm for a base period of 120 days. The discharge required to irrigate the crop in 2880 hectares is

Question 18

A rectangular open channel carries a discharge of 15 cumecs at depth of flow as 1.5 m and bed slope as 1:1440. If only slope is changed to 1:1000 with same depth of flow, discharge will be:

Question 19

A treated wastewater (initial contaminant concentration, flow rate = 5C, 0.2Q) enters a stream (initial concentration, flow rate = 0.01C, Q). Calculate contaminant concentration in stream immediately after mixing of wastewater with stream water?

Question 20

For plate girder shown in figure below by using what action is Panel A designed?

Question 21

Doubly reinforced beams have,

1) More ductility

2) Resistance against stress reversal

3) Shock resistance

Of above statements the correct ones are :-

Question 22

In limit state design of reinforced concrete, deflection is computed by using

Question 23

When

is the limiting case, then the flange of T-beam will have?

Question 24

The location of neutral axis in a RC T-beam

Question 25

The velocity distribution in a turbulent boundary layer is given by u/U =(y/δ)^1/6. The displacement thickness (δ^*) __________.

Question 26

Hydrodynamic entrance length for laminar flow is

Question 27

Which of the following statement is correct for proper adjustment of the theodolite?

Question 28

In which of the following plane, the telescope of the theodolite is turned in order to swing?

Question 29

The angle at which the coarse screen is inclined at which to facilitate the cleaning or raking.

Question 30

Identify the incorrect statement about the aeration process

Question 31

A bullet is fired from a gun. The force on the bullet is given by F = 600 – 2 × 10⁵ t where F is in Newton and t in seconds. The force on the bullet becomes zero as soon as it leaves the barrel.

What is the average impulse imparted to the bullet?

Question 32

A rapid sand filter of area 50 m² was designed for a rate of filtration of 4000 l/m²/hr. how much water will be required for backwashing if backwashing is done once per day.

Question 33

What flow rate in m³/s is needed using 20 : 1 scale model of a dam over which 4m³/s of water flows?

Question 34

For typical values in Marshall Test, which of the following statements are true?

i. All the values are plotted with Marshall Stability number on the x-axis

ii. The flow value is monotonically increasing

iii. Unit weight first increases and then it is found to be decreasing

iv. Percent voids becomes zero at the end of the test

Question 35

For latitude 35^o North; mean minimum and maximum temperature in the month of April is 19.5^oC and 27.5^oC respectively and mean daily percentage of annual daytime hours is 0.29. The crop evapotranspiration in mm/day, for the month of April using Blaney Criddle method will be.

Question 36

Two point P and Q are 1000 m apart across a river. The following measurements were made during testing of a levelling instruments

If the RL of the station P is 120.00m, than the RL of station Q is?

Question 37

A Built up column consists of two ISMC 300 channels placed back to back at a spacing of 200 mm and carries working axial load of 2000 kN, the double lacing provided with an angle 45° with longitudinal axis. A per IS: 800–2007 lacing member should be designed to resist design axial load of

Question 38

Match the following with list I (types of lime) and list II (Calcinated Material)

Question 39

Consider the following statements related to earth pressure:

1) Retaining walls are designed for passive earth pressure.

2) Bridge abutment is designed for active state.

3) Cohesive backfill is preferred for retaining walls.

4) Counterfort R/E wall is designed as per coulomb’s theory.

Which of these statements are true?

Question 40

A fixed beam AB with a central hinge ‘C’ is built up of two components. Member AC has infinite flexural rigidity and CB has moment of inertia I. If the support A yields and rotates by θ, what will be the moment at B?

Question 41

To prevent buckling of the top edge of a gusset plate due to bending compression, the outstand of the gusset plate from the edge of column should be limited to (thickness of plate = t; yield stress ratio = ε)

Question 42

A wastewater treatment plant disposes of its effluent in a surface stream. Characteristics of the stream and effluent are shown below:

For 20°C stream water temperature, equilibrium concentration of oxygen = 9.17 mg/L. Assuming no temperature correction is required, answer the following:

Calculate ultimate BOD of wastewater and stream water mix water?

Question 43

In a tidal model, the horizontal scale ratio is

and the vertical scale ratio

If the time period for prototype is 12 hours, the correct time period for model would be:

Question 44

As per Indian standard code 1077, the burnt clay building bricks having compressive strength less than ________N/mm² are known as common burnt clay bricks.

Question 45

A upper tank containing water situated at 20m height from water level of other lower water tank. There is wall between two tanks which is about 4m high from upper tank water level. For supplying the water a syphon of diameter 200 mm and length 500 mm is used with length of pipe from upper water tank to summit is 100m. Coefficient of friction = 0.005, what will happen regarding flow in pipe.

Question 46

According to Terzaghi’s theory, the ultimate bearing capacity at the ground surface for a purely cohesive soil with cohesion c and for a smooth base of a strip footing is

Question 47

In an irrigation project, in a certain year, 60% and 46% of the cultivable command area in Kharif and Rabi respectively, remained without water and rest of the area got irrigation water. The intensity of irrigation in that year for the project was

Question 48

For a balanced RCC rectangular section having width 200 mm and depth 400 mm, allowable moment capacity is 37 kN-m. if permissible tensile stress is 230MPa, area of reinforcing steel would be

Question 49

A solid shaft of diameter 100 mm, length 1000 mm is subjected to a twisting moment of M_t. The maximum shear stress developed in shaft is 60 N/mm². A hole of 50 mm diameter is now drilled through out the shaft. To develop a maximum shear stress of 60 N/mm2 in hollow shaft, the torque must be reduced by:

Question 50

The safe stopping distance for a two-way traffic in a two-lane road is 61.4 m, then for a two way traffic in a single lane road when other conditions are unaltered the safe stopping distance will be taken as