Concrete Technology and Design of Concrete Structures
In prestressed concrete

forces of tension and compression change but lever arm remains unchanged
both forces of tension and compres-sion as well as lever arm change
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 remain unchanged

ANSWER DOWNLOAD EXAMIANS APP

Concrete Technology and Design of Concrete Structures
If the foundations of all the columns of a structure are designed on the total live and dead load basis, then

there will be no differential settlement
there will be no settlement of columns
the settlement of interior columns will be more than exterior columns
the settlement of exterior columns will be more than interior columns

ANSWER DOWNLOAD EXAMIANS APP