281. If the ratio of effective depth of compression steel and effective depth of tensile in doubly reinforced beam is 0.2, than

A. compression stress in steel = 0.87 fy

B. compression stress in steel = 0.46 fck

C. neither (a) nor (b)

D. both (a) and (b)

282. If shear stresses generated exceed the shear strength of beam in which no shear strength is provided, cracks get formed at approximately 0? to the axis of the beam where 0 is

A. 25?

B. 30?

C.450

D. 50?

283. Thickness of slab is taken

A. 0.10 d

B. 0.20 d

C. 0.15 d

D. 0.25 d

284. Pick up the correct statement from the following

A. one way slabs generally deflect in one direction

B. two way slabs may deflect in two orthogononal direction

C. in the thickened portion of the slab in the vicinity of the supporting column is known as drop panels

D. All of these

285. When the ratio of the long to short dimensions of the slab in greater than X, the slab may be designed as one-way slab where X is

A.1.2

B.1.5

C.1.8

D.2

286. For simply supported slabs spanning in two directions, maximum value of shorter span/ depth ratio should not exceed:

A.30

B.35

C.40

D.45

287. The minimum accidental eccentricity in axially loaded columns may occur due to:

A. end conditions

B. in accuracy during construction

C. variation in materials

D. all of these

Page **41** of **45**