Q.1) In a singly reinforced beam, steel reinforcement is provided at :
A) Tensile zone
B) Compressive zone
C) Neutral zone
D) Both tensile and compressive zone
Option (A)
Q.2) In a simply supported reinforced concrete beam, the reinforcement is placed –
A) Below neutral axis
B) Above neutral axis
C) At neutral axis
D) None of the above
Option (A)
Q.3) The joint action of steel and concrete, in a reinforced concrete section, depends upon the –
A) Bond between concrete and steel bars
B) Absence of corrosion of steel bars embedded in the concrete
C) Practically equal thermal expansion of both concrete and steel
D) All of the above
Option (D)
Q.4) In a singly reinforced beam, the effective depth is measured from the compression edge to the-
A) Tensile edge
B) Centre of tensile reinforcement
C) Neutral axis of the beam
D) None of the above
Option (B)
Q.5) In a singly reinforced concrete beam, as the load increases :
A) Only concrete will resist tension
B) Only steel bars will resist tension
C) Both concrete and steel will resist tension
D) Both concrete and steel will resist compression
Option (B)
Q.6) Normally, the tensile strength of concrete is about …… of its compressive strength.
A) 10 to 15%
B) 15 to 20%
C) 20 to 25%
D) 25 to 30%
Option (A)
Q.7) A reinforced concrete beam will crack if tensile stress set up in the concrete below the neutral axis is :
A) < permissible stress
B) > permissible stress
C) = permissible stress
D) None of the above
Option (B)
Q.8) The section in which concrete is not fully stressed to its permissible value when stress in steel reaches its maximum value is called :
A) Under-reinforced section
B) Over-reinforced section
C) Critical section
D) Balanced section
Option (A)
Q.9) The neutral axis of a balanced section is called :
A) Balanced neutral axis
B) Critical neutral axis
C) Equivalent neutral axis
D) All of the above
Option (B)
Q.10) The neutral axis of an over-reinforced section falls –
A) On the critical neutral axis of balanced section
B) Below the critical neutral axis of balanced section
C) Above the critical neutral axis of balanced section
D) None of the above
Option (B)
Q.11) The Deep Beams are designed for :
A) Shear force only
B) Bending moment only
C) Both shear force and bending moment
D) Bearing
Option (B)
Q.12) The maximum shear stress in rectangular beam is………times of average shear stress.
A) 1.15
B) 1.25
C) 1.50
D) 1.75
Option (C)
Q.13) The chances of diagonal tension cracks in R.C.C. member reduce when :
A) Only shear force act
B) Flexural and shear force act
C) Axial tension and shear force act simultaneously
D) Axial compression and shear force act simultaneously
Option (B)
Q.14) The centre to centre spacing of vertical stirrups, in a rectangular beam, is :
A) Increased towards the centre of the span of the beam
B) Decreased towards the centre of the span of the beam
C) Increased at the ends
D) Decreased at ends
Option (A)
Q.15) The longitudinal shearing stresses acting on the surface between the steel and concrete are called :
A) Bond stresses
B) Tensile stresses
C) Compressive stresses
D) Shear stresses
Option (A)
Q.16) The bond between steel and concrete is mainly due to :
A) Pure adhesive resistance
B) Frictional resistance
C) Mechanical resistance
D) All of the above
Option (C)
Q.17) When a reinforced concrete structure is loaded, the resistance first broken is –
A) Pure adhesive resistance
B) Frictional resistance
C) Mechanical resistance
D) Cohesive resistance
Option (A)
Q.18) For reinforcing bars in compression, the average bond stress can be increased by :
A) 10%
B) 25%
C) 50%
D) 75%
Option (B)
Q.19) When the diameter of a reinforcement bar is φ, the anchorage value of the hook alone is equal to –
A) 2φ
B) 8φ
C) 16φ
D) 32φ
Option (C)
Q.20) When a vertical member is carrying mainly axial loads, it is termed as :
A) Strut
B) Column
C) Tie
D) None of the above
Option (B)
