Prestressed concrete must contain at least ________ kg/m3 of cementitious material.
1). 275
2). 300
3). 325
4). 350
Prestressed concrete must contain at least 300 kg/m3 of cementitious material.
Note:
When the size of aggregate is 10 mm and 14 mm respectively, for the maximum size of aggregate is 20 mm, the content of cementitious material should be increased by 40 kg/m3 and 20 kg/m3.
Conversely for maximum size of aggregate of 40 mm, the content of cementitious material can be reduced by 30 kg/m3.3. On which day, World Oceans Day is observed?
6. When 'n' number of resistors are connected in series the ___________ remains constant.
7. In the following question, select the odd letters/numbers from the given alternatives.
10. Sea breeze is formed in areas near to sea shores due to the process of _____________ of heat.