BARC 2020: RCC Nuclear Quiz 1 for ESE & GATE CE Exams

Question 1

A simply supported beam of section size 400 × 600 mm is loaded symmetrically. The beam is spanning over a clear span of 6 m and the width of the supports is 400 mm. Calculate the factored bending moment developed in the beam due to this loading.

Question 2

Choose the correct statements out of the followings
1) The shrinkage deflection depends upon the relative amount of Tension and compression reinforcement
2) In limit state method of design, the failure criterion for RCC beam and column is maximum principle stress theory
3) Failure by crushing of concrete before yielding of steel is called secondary compression failure and failure by crushing of concrete after yielding is called primary compression failure.
4) Under reinforced section is deeper and can undergo larger deflection when compared to balanced and over-reinforced section

Question 3

A simply supported beam is 250 mm x 450 mm and is having 3-20 mm ∅bar going into support with U type hook at centre of support. The factored shear force at the centre of support is 150 kN. The maximum value of development length, according to limit state method, is ___mm.
[Take effective cover = 35 mm, M20 grade of concrete and Fe415 grade of steel]

Question 4

Which of the following statements are true?
1) Plane section remains plane after bending.
2) Steel and Concrete both are assumed to be linearly elastic.
3) Pressure line is locus of net compressive force on section.
4) Post tensioning is used for railway sleepers.

Question 5

A concrete beam is prestressed by a cable carrying an initial prestressing force of 500 kN. The cross-sectional area of the wires in the cable is 500 mm². The ratio of percentage loss of stress in the cable due to shrinkage of concrete in pre-tensioned and post-tensioned prestressed beam is ____.
[Assume modulus of elasticity of steel (Es) = 210 kN/mm² and age of concrete at transfer = 8 days]

Question 6

The allowable load carrying capacity of circular column section 400 mm diameter reinforced with 3245 mm² steel with bars adequately tied with spirals based on working stress method, is ____kN.
[Use M 25 grade of concrete and Fe415 grade of steel, assume short column]

Question 7

A reinforced concrete column 500 mm x 500 mm has four steel bars of 25 mm diameter imbedded in it. The total load on the column is 1500 kN. The stress (in N/mm²) in steel is
[Take modulus of elasticity of steel and concrete areas 205 kN/mm² and 13.6 kN/mm² respectively]

Question 8

Assertion A: For determining uniaxial compressive strength of concrete, cube is a better test specimen as compared to cylinder.
Reason R: Stress distribution is more uniform over the cross-section of a cylinder as compared to cube.
Select your answer based on the coding system given below

Question 9

What type of condition always takes place in the column having Axial compression + uniaxial bending when eccentricity is less than balanced failure condition?

Question 10

A column of size 450 X 600 mm is subjected to an axial load of 1500 KN under service dead and live loads. Using M20 concrete and Fe415 steel .What is the reinforcement needed if the unsupported length of 3m.