Correct answer
A. double
Explanation
The correct answer is double.
Duplex feed pumps are used in small steam boilers. These operate on the principle of________?
If an unsupported uniform cross sectional elastic bar is subjected to a longitudinal impact from a rigid bob moving with velocity v, then a compressive wave of intensity sc is propagated through the bar as follows________?
Time study is________?
In a tensile test, near the elastic limit zone, the________?
Pessimistic time is________?
To avoid moisture troubles, the branch connections from compressed air lines should be taken from________?