An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

Below are given two sets, Set - I which gives modalities of operant conditioning and Set - II which provides the types of reinforcement, the types of responses (responses made or withheld) and the presence or absence of cue. Match the two sets and indicate your answer by choosing from the code : Set - I (Modalities of operant conditioning procedures) Set – II (Conditions and contexts) (a) Reward training (i) Positive reinforcement, response made, with cue present (b) Escape training (ii) Positive reinforcement, response withheld with cue absent (c) Discriminated omission training (iii) Positive reinforcement, response made with cue absent (d) Active avoidance (iv) Negative reinforcement, response made with training (e) Punishment training (v) Positive reinforcement, response withheld with cue present (vi) Negative reinforcement, response withheld with cue absent

A

(a) - (iii), (b) - (iv), (c) - (v), (d) - (i) - (e) - (vi)

B

(a) - (i), (b) - (ii), (c) - (iii), (d) - (iv) - (e) - (v)

C

(a) - (ii), (b) - (iii), (c) - (iv), (d) - (v) - (e) - (vi)

D

(a) - (i), (b) - (iii), (c) - (iv), (d) - (v) - (e) - (vi)

The ultimate shear force at a section of an RCC beam is 300 kN. The shear resisted by concrete is 77.5 kN. What is the shear for which shear reinforcement is required?

A

213.5 kN

B

220 kN

C

222.5 kN

D

122.5 kN

Consider the following statements with regards to the shear force diagram for the beam ABCD: 1. The beam ABCD is an overhanging beam having supports at A and D only. 2. The beam carries a point load of 20 kN at C. 3. The beam carries a concentrated load of 10 kN at the end B. 4. The beam is an overhanging beam having supports at C and D only. 5. The beam carries a uniformly distributed load of 70 kN over the left hand portion AC only. Which of the above statements are correct?

A

1, 2 and 3 only

B

1, 3 and 5 only

C

2, 3 and 4 only

D

2, 4 and 5 only

Nominal cover to reinforcement is provided to 1. protect reinforcement against corrosion. 2. provide share resistance. 3. protect reinforcement against fire. 4. develop sufficient bond strength along surface area of reinforcement bars. Which of the above statements are correct?

A

1 and 4 only

B

2, 3 and 4 only

C

1, 3 and 4 only

D

1, 2 and 3 only

In a counterfort retaining wall, the main reinforcement is provided on thei) bottom face in front counterfortii) inclined face in front counterfortiii) bottom face in back counterfortiv) inclined face in back counterEortThe correct answer is

A

(i) and (ii),

B

(ii) and (iii)

C

(i) and (iv)

D

(iii) and (iv)

In a counterfort retaining wall, the main reinforcement is provided on the
i) bottom face in front counterfort
ii) inclined face in front counterfort
iii) bottom face in back counterfort
iv) inclined face in back counterEort
The correct answer is

A

(i) and (ii),

B

(ii) and (iii)

C

(i) and (iv)

D

(iii) and (iv)

Consider the following statements regarding types of supports and beams: 1. When both supports of beams are roller supports, the beam is known as simply supported beam. 2. A beam with one end fixed and the other end free is known as fixed beam. 3. A beam with both ends fixed is known as cantilever beam. 4. A beam with one end fixed and the other simply supported is known as propped cantilever. Which of the above statements is/are correct ?

A

1 only

B

1 and 4 only

C

1, 3 and 4 only

D

2, 3 and 4 only

which of the following cracks are the first cracks to be formed in an overloading scenario of an Over-reinforced RCC beam?

A

Web shear cracks

B

Flexure shear cracks

C

Flexural cracks

D

Concrete crushing

If nominal shear stress $${\tau _{\text{v}}}$$ exceeds the design shear strength of concrete $${\tau _{\text{c}}}$$, the nominal shear reinforcement as per IS : 456-1978 shall be provided for carrying a shear stress equal to

A

$${\tau _{\text{v}}}$$

B

$${\tau _{\text{c}}}$$

C

$${\tau _{\text{v}}} - {\tau _{\text{c}}}$$

D

$${\tau _{\text{v}}} + {\tau _{\text{c}}}$$

A semicircular disc rests on a horizontal surface with its top flat surface horizontal and circular portion touching down. The coefficient of friction between semi circular disc and horizontal surface is µ. This disc is to be pulled by a horizontal force applied at one edge and it always remains horizontal. When the disc is about to start moving, its top horizontal force will

A

Remain horizontal

B

Slant up towards direction of pull

C

Slant down towards direction of pull

D

None of the above

An R.C.C. beam not provided with shear reinforcement may develop cracks in its bottom inclined roughly to the horizontal at

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