A reinforced concrete slab is 75 mm thick. The maximum size of reinforcement bar

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Question
A reinforced concrete slab is 75 mm thick. The maximum size of reinforcement bar that can be used is
Options
A. 12 mm diameter
B. 10 mm diameter
C. 8 mm diameter
D. 6 mm diameter

Correct Answer

8 mm diameter

UPSC Civil Service Exam Questions problems

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1. The following steps are involved in making a spigot and socket joint of cast iron pipes used in water supply systems :
1. Tarred gasket or hemp yarn in wrapped around the spigot.
2. The sipgot end is centered into the socket end of the preceding pipe.
3. A joining ring end is placed around the barrel and against the face of the socket.
4. The gasket or hemp yarn in caulked slightly.
5. Molten pig lead is poured and then caulked.
The correct sequence of these steps is
Options
A. 2, 1, 4, 3, 5
B. 2, 1, 3, 4, 5
C. 1, 2, 4, 5, 3
D. 1, 2, 3, 5, 4

3. A bar of circular cross-section of diameter D is subjected to a torque T at B as shown in the figure given. What is the angle of twist at A?
Options
A. Same as that at B
B. Zero
C. Twice as that at B
D. Half as that at B

4. Consider the following statements :
Collision diagram is used to
1. study accident pattern
2. eliminate accidents
3. determine remedial measures
4. make statistical analysis of accidents
Of these statements :
Options
A. 1 and 2 are correct
B. 1 and 3 are correct
C. 3 and 4 are correct
D. 2 and 4 are correct

5. Consider the following statements :
A : In masonry, bricks are joined together by cement mortar.
B : Cement mortar adheres more effectively to brick surface than any other material.
Options
A. both A and R are true and R is the correct explanation of A
B. both A and R are true but R is not the correct explanation of A
C. A is true but R is false
D. A is false but R is true

6. The side AD of the square block ABCD as shown in the given figure is fixed at the base and it is under a state of simple shear causing shear stress ? and shear strain ?, where The distorted shape is AB'C'D. The diagonal strain (linear) will be
Options
A.
B.
C. ?2
D. ?

7. For designing end bearing piles of square cross-section in clays having average unconfmed compressive strength of 6 t/m², the net ultimate bearing capacity may be taken as
Options
A. 15 t/m²
B. 18 t/m²
C. 20 t/m²
D. 27 t/m²

8. A plot of land 60�m x 20 m is measure steel tape. If the standard error of length width measurements is taken as � 1 cm, the standard error of the area of the plot be
Options
A. � 0.1414 m²
B. � 0.566 m²
C. � 0.632 m²
D. � 0.8484 m²

9. A short column of external diameter D and internal diameter d, is subjected to a load W, with an eccentricity 'e', causing zero stress at an extreme fibre. Then the value of 'e' must be
Options
A.
B.
C.
D.

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