In astable operation, the time period of the 555 timer output is expressed as
A) tw = tLO + tHI B) tw = R(.693 ) C) tw = RextCext D) tw = Rext + Rint
A
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Estimate the volume of water used to take showers by the members of this class in one academic semester.
What will be an ideal response?
Soil nailing refers to
A) a cut face of excavation supported by closely spaced steel bars and shotcrete over WWR. B) a cut face of excavation supported by closely spaced steel bars and shotcrete. C) a cut face of excavation supported by closely spaced steel bars in grouted holes and shotcrete over WWR. D) a cut face of excavation supported by closely spaced steel bars or angles. E) none of the above.
Shaft A has a diameter of 75 mm and shaft B has a diameter of 39 mm. What is the difference in diameter between the two shafts?
Fill in the blank(s) with the appropriate word(s).
The abbreviation for the plastic pipe used in hot and cold water supply systems is ____________________.
Fill in the blank(s) with the appropriate word(s).