The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n?. If fc and ft are permissible compressive and tensile stresses, the moment to resistance of the beam, is

A

bn (fc/2) (d - n/3)

B

Atft (d - n/3)

C

½ n₁ (1 - n₁/3) cbd²

D

All the above

A singly reinforced beam has breadth b, effective depth d, depth of neutral axis n and critical neutral axis n₁. If f_c and f_t are permissible compressive and tensile stresses, the moment to resistance of the beam, is

A

$${\text{bn}}\frac{{{{\text{f}}_{\text{c}}}}}{2}\left( {{\text{d}} - \frac{{\text{n}}}{3}} \right)$$

B

$${\text{At}}{{\text{f}}_{\text{t}}}\left( {{\text{d}} - \frac{{\text{n}}}{3}} \right)$$

C

$$\frac{1}{2}{{\text{n}}_1}\left( {1 - \frac{{{{\text{n}}_1}}}{3}} \right){\text{cb}}{{\text{d}}^2}$$

D

All the above

What are the different limit states of design as per IS 456: 2000? a. Limit state of failure b. Limit state of damage c. Limit state of collapse d. Limit state of serviceability

A

a and d

B

b and c

C

c and d

D

a and b

If the depth of actual neutral axis in a beam is more than the depth of critical neutral axis, then the beam is called

A

Balanced beam

B

Under reinforced beam

C

Over reinforced beam

D

None of the above

When the depth of the actual neutral axis in a beam is greater than the depth of the critical neutral axis, then the beam is called:

A

under-reinforced section

B

balanced beam section

C

critical section

D

over-reinforced section

Consider the following statements regarding stress in beam : 1. If a member is subjected to equal and opposite couples acting in the same longitudinal planes, the member is said to be in pure bending. 2. The internal stresses developed in the beam are known as flexural stresses. 3. There is an intermediate surface known as neutral surface, at which the stress is zero. 4. An axis obtained by intersection of the neutral surface and a cross-section is known as neutral axis. Which of the above statements are correct ?

A

2 and 3 only

B

1 and 4 only

C

3 and 4 only

D

1, 2, 3 and 4

If the effective depth of a beam is d, what would be the maximum depth of neutral axis for the beam in the limit state method of design for Fe 415 steel?

A

0.45 d

B

0.48 d

C

0.50 d

D

0.53 d

If the first two statements are true, the third statement is :
I. Oat cereal has more fiber than corn cereal but less fiber than bran cereal.
II. Corn cereal has more fiber than rice cereal but less fiber than wheat cereal.
III. Of the three kinds of cereal, rice cereal has the least amount of fiber.

A

true

B

false

C

[C. uncertain

In order to determine acidic, basic or neutral character of solutions, a student tabulated the following results after experimentation. Which of the following observations has been tabulated correctly? Case Test Solution Colour change on red litmus paper Colour change on blue litmus paper Acidic/Basic/Neutral A NaOH No change Red Acidic B Sour Milk Blue No change Neutral C Vinegar No change No change Neutral D Washing soda Blue No change Basic

A

B

C

D

In order to determine acidic, basic or neutral character of solutions, a student tabulated the following results after experimentation. Which of the following observations has been tabulated correctly? Case Test Solution Colour change on red litmus paper Colour change on blue litmus paper Acidic/Basic/Neutral A NaCl No change Red Acidic B Lime water Blue No change Neutral C Vinegar No change No change Neutral D Washing soda Blue No change Basic

A

B

C

D

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (where xu is the depth of neutral axis at the limit state of collapse)

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