Semiconductors Lesson 5
Which of the following is not one of the steps or processes involved in a complete power supply system?
(Combining the outputs of the taps)..Filtering the DC output, Regulating the output, Transforming the AC voltage
A waveform across the load of a full-wave rectifier is pulsating direct current with half the peak voltage of the secondary because of the center-tap.
True
Batteries in series add voltages where batteries in parallel add currents.
True
If the waveform across a load resistor is observed to be half-wave pulsating direct current, the rectifier is classified as a ? rectifier.
Half-wave
The peak current through load RL is ? . Calculate your answer to three decimal places.
0.186A
The half-wave average voltage across load RL is ? . Hint: The deduction for the diode must be included in the calculation. Calculate your answer to two decimal places.
2.96V
The average voltage across RL is ? . Calculate your answer to two decimal places.
5.48V
Find the effective (rms) voltage of the "AC source." Hint: This is a pure sine-wave calculation; do not deduct for the diode.
7.07V
The peak voltage across RL is ? . Calculate your answer to one decimal space.
8.6v
Which of the following formulas is used to find the rms value of a half-wave rectifier?
A
Which of the following represents a full-wave rectifier with a center-tapped transformer and a connected load?
A
Which of the following represents a full-wave rectifier with lines and arrows to indicate direction of electron flow for the positive half of input cycle?
A
Which of the following represents the waveform across RL?
A
Which of the following is a method used to measure rectified voltages in a half-wave rectifier?
All of the above..Peak average,Peak-to-peak,RMS
Which of the following formulas is used to find the peak voltage of an un-rectified sine wave?
B
Which of the following represents a full-wave rectifier with lines and arrows to indicate direction of electron flow for the negative half of input cycle?
B
Which of the following represents a half-wave rectifier for the positive input half cycle?
B
Which of the following represents an output waveform that results from two input cycles on a full-wave rectifier?
B
A dual-voltage power supply is also called a ? .
Bipolar supply
A full-wave rectifier that does not use a center-tapped transformer and utilizes four diodes to provide full-wave rectification is called a ? rectifier.
Bridge
When connecting power supplies that convert AC to DC, note that the ? will determine the load polarity.
Diode polarity
A ? rectifier uses a center-tapped transformer secondary and two diodes.
Full wave
The AC input cycle is divided into two parts: the positive alternation and the negative alternation.
True
The rectifier converts AC to a(n) pulsating DC voltage.
True
The image represents a ? with load RL.
full-wave bridge rectifier