The noise produced by a ______ cooled machine is less as the rotor moves in a medium of smaller density.
A). air
B). hydrogen
C). either (A) or (B)
D). none of the above
1. In an A.C. circuit power is dissipated in
3. The size of an excavator is usually expressed in terms of
4. A resistor normally opens when it burns out.
5. An RC differentiator acts as a
7. Spring constant in force-voltage analogy is analogous to
8. A certain OP-amp has bias currents of 50 µA. The input offset current is
9. 1 db corresponds to ___________ change in voltage or current level