Question 1

The ______________ resistance is the resistance of the p and n materials.

Accepted Answer

bulk

Question 2

In the diode prefix 1N, the 1 indicates one ______________.

Accepted Answer

junction

Question 3

______________ ratings are maximum ratings and should never be exceeded.

Accepted Answer

Breakdown

Question 4

A circuit that converts the ac power-line voltage to the required dc value is called a ______________ supply.

Accepted Answer

The answer of A circuit that converts the ac power-line...

Question 5

Diodes are able to produce a dc output voltage because they are ______________ devices.

Accepted Answer

The answer of Diodes are able to produce a dc...

Question 6

The ______________ value of a full-wave signal is equal to 0.707 times the peak voltage.

Accepted Answer

The answer of The ______________ value of a full-wave signal...

Question 7

The unfiltered output from a half-wave or full-wave rectifier is a ______________ dc voltage.

Accepted Answer

The answer of The unfiltered output from a half-wave or...

Question 8

When elements such as gallium or arsenic are used in doping, a ______________-emitting diode can be manufactured.

Accepted Answer

The answer of When elements such as gallium or arsenic...

Question 9

Voltage regulation is the most common application of a ______________ diode.

Accepted Answer

The answer of Voltage regulation is the most common application...

Question 10

______________ conduct less than metal conductors but more than insulators.

Accepted Answer

The answer of ______________ conduct less than metal conductors but...

Question 11

What includes the variations between two successive points having the same value and varying in the same direction?

Accepted Answer

A cycle includes the variations between two successive points having the same value and varying in the same direction, typically referring to a complete oscillation in waveforms or signals.

Question 12

A circuit that provides an entirely positive or negative output voltage when an ac input voltage is applied is called a

Accepted Answer

A rectifier is a circuit that converts alternating current (AC) to direct current (DC), resulting in an output voltage that is entirely positive or negative, depending on the configuration.

Question 13

The rms value of a full-wave signal is equal to

Accepted Answer

The answer of The rms value of a full-wave signal...

Question 14

The maximum instantaneous reverse-bias voltage across a diode is the

Accepted Answer

The maximum instantaneous reverse-bias voltage across a diode is referred to as the peak inverse voltage (PIV). It is the maximum voltage a diode can withstand in the reverse-bias direction without breaking down.

Question 15

Which of the following is not an advantage for using a bridge rectifier rather than a two-diode full-wave rectifier?

Accepted Answer

A bridge rectifier is generally more efficient than a two-diode full-wave rectifier because it uses four diodes to convert AC to DC, allowing for full utilization of both halves of the AC waveform.

Question 16

The unfiltered output from a half-wave or full-wave rectifier is a(n)

Accepted Answer

The unfiltered output from a half-wave or full-wave rectifier is a pulsating DC voltage, which means it maintains a constant polarity but varies in amplitude.

Question 17

Why does the full-wave rectifier provide a larger dc output voltage with less ripple than a half-wave rectifier?

Accepted Answer

The discharge time for a full-wave rectifier is only one-half that of a half-wave rectifier because the full-wave rectifier converts both halves of the AC waveform into DC, effectively doubling the frequency of the output waveform compared to the half-wave rectifier. This results in a shorter discharge time of the filtering capacitor between peaks, leading to less ripple and a higher average output voltage.

Question 18

What diodes are doped with elements such as gallium, arsenic, and phosphorus and emit different colors of light?

Accepted Answer

LEDs, or Light Emitting Diodes, are doped with elements such as gallium, arsenic, and phosphorus to emit different colors of light when an electric current passes through them.

Question 19

In most cases, the LED voltage drop can be assumed to be

Accepted Answer

The voltage drop across most LEDs is typically around 2 V, although it can vary based on the LED's color and material.

Question 20

Which of the following is not an advantage of an LED over an incandescent lamp?

Accepted Answer

LEDs are generally more expensive upfront than incandescent lamps, although they may save money in the long run due to lower energy consumption and longer lifespan.

Quiz 29: Diodes and Diode Applications