The distinguishing characteristic of the voltage follower configuration is:
A) non-inverting output. B) very high input impedance.
C) voltage gain of unity. D) all of the above
C
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Jogging is defined by ____ as “the quickly repeated closure of a circuit to start a motor from rest for the purpose of accomplishing small movements of the driven machine.”
a. ASA b. UL c. IEEE d. NEMA
Work and energy are related because work produces energy
Indicate whether the statement is true or false.
Criticism should always be __________
A) competitive B) constructive C) ?discouraging D) damaging
A common model for a practical capacitor has a “leakage” resistance, RC , in parallel with an ideal capacitor, as shown in Figure P4.67. The effects of lead wires are also represented by resistances R1 and R2 and inductances L1 and L2.
a. Assume C = 1?F, RC = 100 M?, R1 = R2 = 1??, and L1 = L2 = 0.1?H, and find the equivalent impedance Zab seen across terminals a and b as a function of frequency ?.
b. Find the range of frequencies for which Zab is capacitive.
[Hint: Assume that RC is much greater than 1/?C such that RC can be ignored in part b.]
