CONCRETE TECHNOLOGY AND DESIGN OF CONCRETE STRUCTURES QUIZ

forces of tension and compression change but lever arm remains unchanged

both forces of tension and compres-sion as well as lever arm remain unchanged

forces of tension and compressions remain unchanged but lever arm changes with the moment

both forces of tension and compres-sion as well as lever arm change

1.5 m and 1.5 m

1.5 m and 3.0 m

3.0 m and 3.0 m

3.0 m and 1.5 m

2.5

3.5

5.5

4.5

parabolic above neutral axis and rectangular below neutral axis

wholly parabolic

wholly rectangular

rectangular above neutral axis and parabolic below neutral axis

88

99

35

40

Freyssinet system

Lee-Macall system

Magnel-Blaton system

Long line method

To provide adequate bond stress

To impart initial compressive stress in concrete

All of these

To resist tensile stresses

(ii) and (iii)

(i) and (iii)

(ii) and (iv)

(i) and (iv)

Both A and R are true and R is the correct explanation of A.

A is true but R is false.

Both A and R are true but R is not the correct explanation of A.

A is false but R is true.

can be less than 1

can be more than 1

is always greater than 1

is always less than 1