10 Technical & 5 Non Tech

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The spacing between two bars in medium size screen range from [RRB : 2015]

1 point

20 - 40 mm

20 - 50 mm

10 - 30 mm

10 - 20 mm

Clear selection

The air pollution control device cyclone is used for the removal of [RRB : 2015]

1 point

100 μm particles

50 μm particles

2.5 μm particles

10 μm particles

Clear selection

The 20 dBA noise level is how many times more powerful than 1 dBA noise level ? [RRB : 2015]

1 point

20 times

200 times

100 times

10 times

Clear selection

A clay sample has a void ratio 0.54 in dry state. The specific gravity of soil solids is 2.7. What is the shrinkage limit of the soil [RRB : 2015]

1 point

17.0%

20.0%

10.0%

8.5%

Clear selection

In an office building one water closet should be provided for every ______ number of female persons

1 point

Clear selection

Plate load test is carried over upto ______ times expected ultimate load

1 point

125%

90%

100%

150%

Clear selection

Which of the following is a type of semi-module outlet?

1 point

Submerged pipe outlet

Open sluice

Gibb’s module

Open flume

Clear selection

Hydraulic accumulator is a device used to store ______ energy which may be supplied to a machine later on.

1 point

strain

pressure

none of the above

kinetic

Clear selection

In the design of gantry girders impact factor for vertical loads for electrically operated cranes is taken as

1 point

25%

15%

20%

10%

Clear selection

If the size of the column is 250 × 300 mm and depth of footing is 400 mm, the perimeter of critical section for two way shear is

1 point

1100 mm

1500 mm

2700 mm

None of these

Clear selection

What is hotspot

1 point

A geographical area with very high exotic biodiversity

A region of scanty rainfall

An area of constant high temperature

A region of high endemic biodiversity

Clear selection

if a : b = 4 : 5 and b : c = 2 : 3 then c : a is

1 point

8 : 15

4 : 5

15 : 8

3 : 4

Clear selection

Compound interest on rupees 8000 for 1 years at 10% per annum compounded half yearly is

1 point

840

820

800

1680

Clear selection

Which country recently passed a law to make ‘ethnic unity’ mandatory?

1 point

Bangladesh

Tibet

China

India

Clear selection

Complete the series 10, 34, 12, 31, 14, 28, 16, ?, ?

1 point

25, 18

30, 13

19, 18

18, 20

Clear selection

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