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1RC circuits are more common than RL circuits because capacitors are smaller and more economical.
A)True
B)False


2The time constant is the time for a change of 23.6% in the current through L or the voltage across C.
A)True
B)False


3Resistance has a concentrated magnetic field to oppose a change in I, like inductance, and an electric field to store charge that opposes a change in V, like capacitance.
A)True
B)False


4The time constant is often symbolized by τ, which is the Greek letter tau.
A)True
B)False


5The L/R time constant becomes longer with larger values of L.
A)True
B)False


6The transient response of capacitive circuits is measured in terms of the product of R x C.
A)True
B)False


7The voltage across a capacitor cannot change instantaneously.
A)True
B)False


8Very small capacitors are sometimes placed across the terminals of a battery in order to improve the transient response of the battery.
A)True
B)False


9For an RL differentiator the output is taken across the inductor.
A)True
B)False


10The average height of any waveform over one full cycle is its value.


11The voltage across C in an RC circuit is called a(n) output.


12The time constant is often symbolized by .


13For an RL integrator, the output is taken across the .


14XC and the RC time constant are both measures of the reaction of to a change involtage.


15A capacitor must exhibit capacitive reactance that is one-tenth or less of its series resistance at the desired frequency.


16Transient response is a temporary condition that exists only until the current is reached.


17 specifies the time it takes C to charge to 63 percent of the charging voltage.


18Whether an RC time constant is long or short depends on the
A)capacitance only
B)resistance only
C)impedance
D)pulse width of the applied voltage


19A circuit whose output is proportional to the charge being stored is a(n)
A)RC integrator
B)RC differentiator
C)LC notch filter
D)LC differentiator


20The voltage across any inductance, vL is equal to
A)L(di/dt)
B)XL(di/dt)
C)L/(di/dt)
D)XL/(di/dt)


21In electronic circuits, when analyzing the effect of L or C on the waveshape of nonsinusoidal voltages, what is useful?
A)Ohm's law
B)coefficient of coupling
C)time constants
D)Pythagorean's theorem


22With nonsinusoidal voltage and current, the effect of L or C is to produce
A)a change in waveshape
B)out of phase voltages or currents
C)LC filters
D)oscillator circuits


23The time constant is what percentage of change in current through L or the voltage across C?
A)36.8%
B)63.2%
C)70.7%
D)29.3%


24What is the time constant of a 20-H coil having 1000 Ω of series resistance?
A)0.2 s
B)2.0 s
C)20 ms
D)20 μs


25The transient response of capacitive circuits is measured in terms of
A)R/C
B)R x C
C)1/RC
D)1/RXC





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