Question 1

____ is a comparison of the base current to the collector-emitter current.&#10;A) Bias&#10;B) Ground&#10;C) Gain&#10;D) Alpha

Accepted Answer

Gain is the term used to describe the ratio of the output current (collector-emitter current) to the input current (base current) in a transistor.

Question 2

Darlington amplifiers can be used to control a large amount of current to a load.

Accepted Answer

Darlington amplifiers, by combining two bipolar transistors, increase current gain and can control a large amount of current to a load, making them suitable for applications requiring high current control.

Question 3

The Darlington amplifier is used when a low gain is required.

Accepted Answer

The Darlington amplifier is used to achieve high current gain, not low gain. It consists of two bipolar transistors connected in such a way that the current amplified by the first is amplified further by the second, resulting in a high overall current gain.

Question 4

Gain does not vary from one type of transistor to another.

Accepted Answer

The gain of a transistor, which is a measure of how much it amplifies the input signal, varies significantly among different types of transistors due to differences in their materials, construction, and intended applications.

Question 5

The ____ circuit is easily made by connecting the emitter of one transistor to the base of another transistor.&#10;A) Newton amplifier&#10;B) Darlington amplifier&#10;C) Edison amplifier&#10;D) Darlington transmitter

Accepted Answer

The Darlington amplifier circuit is created by connecting the emitter of one transistor to the base of another, significantly increasing current amplification.

Question 6

Gain is measured in a term called ____.&#10;A) beta&#10;B) alpha&#10;C) gamma&#10;D) ground

Accepted Answer

Gain is measured in a term called beta, which is the ratio of the output voltage to the input voltage.

Question 7

The Darlington amplifier circuit can have a gain of several thousand.

Accepted Answer

The Darlington amplifier, consisting of two transistors connected in such a way that the current amplified by the first is amplified further by the second, can indeed achieve very high current gain values, often in the range of several thousand, depending on the specific transistors used.

Question 8

A photocell can supply only ____ the amount of base current needed to drive a transistor into saturation.&#10;A) 1/10&#10;B) 1/50&#10;C) 1/100&#10;D) 1/1000

Accepted Answer

A photocell can supply only 1/100 the amount of base current needed to drive a transistor into saturation, due to its relatively low current output.

Question 9

A transistor is driven into ____ by supplying it with more base-emitter current than is normally necessary to turn it completely on.&#10;A) supply&#10;B) discharge&#10;C) recharge&#10;D) saturation

Accepted Answer

When a transistor is supplied with more base-emitter current than is necessary for it to be fully on, it enters a state called saturation. In this state, the transistor allows maximum current to flow from collector to emitter.

Question 10

The Darlington amplifier circuit is one of the least used in industry.

Accepted Answer

The Darlington amplifier circuit is widely used in industry due to its high current gain, making it suitable for applications requiring high amplification from a low input current.

Deck 13: The Darlington Amplifier