Chapter 14: Resistive AC circuits
MULTIPLE CHOICE
1. In a basic AC circuit, the ____ can be an AC generator or a circuit that generates an AC voltage.
a.
AC source
c.
resistive load
b.
conductor
d.
capacitor
2. In a basic AC circuit, the ____ can be a resistor, a heater, a lamp, or any similar device.
a.
AC source
c.
resistive load
b.
conductor
d.
capacitor
3. When an AC voltage is applied to the resistive load, the AC current’s amplitude and direction vary in
the same manner as those of the ____.
a.
applied voltage
c.
effective current
b.
applied resistance
d.
power consumption
4. In the in-phase relationship that exists between the current and the applied voltage in a pure resistive
circuit, the current and voltage waveforms pass through zero and ____ values at the same time.
a.
minimum
c.
one
b.
maximum
d.
negative one
5. AC voltage or ____ values are assumed to be the effective values if not otherwise specified.
a.
current
c.
inductance
b.
resistance
d.
capacitance
6. In a series AC circuit, the current is always in phase with the voltage regardless of the number of ____
in the circuit.
a.
inductors
c.
capacitors
b.
generators
d.
resistors
7. The ____ in a parallel circuit remains constant across each individual branch.
a.
resistance
c.
capacitance
b.
inductance
d.
voltage
8. ____ is measured in watts and is equal to the current times the voltage in the circuit.
a.
Power
c.
Capacitance
b.
Inductance
d.
Resistance
9. The power curve does not fall below the reference line because the power is dissipated in the form of
____.
a.
light
c.
pressure
b.
heat
d.
electricity
10. In a(n) ____ circuit, the average power is the power consumed.
a.
AC
c.
series
b.
DC
d.
parallel
COMPLETION
1. A basic AC circuit consists of an AC source, ____________________, and a resistive load.
2. The ____________________ is the amount of AC voltage that produces the same degree of heat as a
DC voltage of the same value.
3. Power is dissipated in AC resistive circuits the same way as in ____________________.
SHORT ANSWER
1. Describe the phase relationship between current and voltage in a resistive circuit.
2. Describe the power curve in a graph depicting the relationship of power, current, and voltage.
