An existing DC three-wire system is to be converted into a 3-phase, 4-wire system by adding a fourth wire equal in cross-section to each outer wire of the DC system. For the same supply and load voltages to neutral and balanced conditions, the extra power at unity power factor that can be supplied by the AC system will be
a
Important Questions from Miscellaneous-Engineering
- Which one of the following lists identifies the wastes from common manufacturing and industrial process, such as solvents that have been used in cleaning or degreasing operations?
When once a pocket of smoke, containing air pollutants, is released into the atmosphere from a source like an automobile or a factory chimney, it gets dispersed into the atmosphere into various directions depending upon the
1. prevailing winds
2. temperature
3. pressure conditions
Select the correct answer.
During the compaction test, the weight of compacted soil specimen along with mould is 38.2 N. The volume and weight of mould are 0.95×10-3 m³ and 20.5 N respectively and the water content is 12%. The dry unit weight of the compacted specimen will be nearly
- Which one of the following is a time-dependent reversible process in which materials under constant composition and volume soften when remolded?
- The compressibility of a saturated, clay-water system is determined by means of the apparatus devised by Terzaghi known as
