Chapter 31 Study Guide Electronics #1 Questions With
Complete Solutions
A DC power supply converts AC voltage to DC voltage.
Correct Answers True
A diode allows current to flow in two opposite directions.
Correct Answers False
A diode must have at least four terminals to function correctly.
Correct Answers False
A filtering capacitor __. Correct Answers Charges on the rising
side of the DC pulse and discharges on the falling side
A pass transistor capacitance multiplier multiplies the
capacitance by the gain of the transistor. Correct Answers True
A pi section filter has inductors along the vertical sides. Correct
Answers False
A three-phase, full-wave rectifier achieves __ overlapping
pulses per cycle. Correct Answers Six
A three-terminal voltage regulator integrated circuit is connected
before the rectifier in a circuit. Correct Answers False
A zener diode can act by itself as a voltage regulator in high-
current applications. Correct Answers False
, All components of a three-terminal voltage regulator integrated
circuit, except for a couple of external __, are included on one
chip. Correct Answers Capacitors
An inductor may be placed in series with the rectifier output to
provide filtering action. Correct Answers True
Compared to half-wave rectification, full-wave rectification
provides pulsating DC with __. Correct Answers More pulses
and less time below peak
Compared to linear power supplies, switching power supplies
are capable of __. Correct Answers Higher current ranges and
have a smaller footprint
Diodes used for small signal detection are most often made of
silicon. Correct Answers False
During which stage of a switching power supply is the rectified
pulsed DC adjusted to a standard voltage
regardless of the input voltage? Correct Answers Power factor
correction
Filtering pulsating DC results in lower currents in the
transformer secondary. Correct Answers False
How many diodes does a full-wave bridge rectifier use to
accomplish the same type of rectification accomplished by two
diodes and a center-tapped transformer? Correct Answers Four
Complete Solutions
A DC power supply converts AC voltage to DC voltage.
Correct Answers True
A diode allows current to flow in two opposite directions.
Correct Answers False
A diode must have at least four terminals to function correctly.
Correct Answers False
A filtering capacitor __. Correct Answers Charges on the rising
side of the DC pulse and discharges on the falling side
A pass transistor capacitance multiplier multiplies the
capacitance by the gain of the transistor. Correct Answers True
A pi section filter has inductors along the vertical sides. Correct
Answers False
A three-phase, full-wave rectifier achieves __ overlapping
pulses per cycle. Correct Answers Six
A three-terminal voltage regulator integrated circuit is connected
before the rectifier in a circuit. Correct Answers False
A zener diode can act by itself as a voltage regulator in high-
current applications. Correct Answers False
, All components of a three-terminal voltage regulator integrated
circuit, except for a couple of external __, are included on one
chip. Correct Answers Capacitors
An inductor may be placed in series with the rectifier output to
provide filtering action. Correct Answers True
Compared to half-wave rectification, full-wave rectification
provides pulsating DC with __. Correct Answers More pulses
and less time below peak
Compared to linear power supplies, switching power supplies
are capable of __. Correct Answers Higher current ranges and
have a smaller footprint
Diodes used for small signal detection are most often made of
silicon. Correct Answers False
During which stage of a switching power supply is the rectified
pulsed DC adjusted to a standard voltage
regardless of the input voltage? Correct Answers Power factor
correction
Filtering pulsating DC results in lower currents in the
transformer secondary. Correct Answers False
How many diodes does a full-wave bridge rectifier use to
accomplish the same type of rectification accomplished by two
diodes and a center-tapped transformer? Correct Answers Four
