Transistor Amplification Concepts

The video tutorial explains the basic amplifying action of a transistor using a common base configuration. It covers the relationship between collector current, base current, and emitter current, focusing on AC response. The tutorial discusses input and output characteristics, highlighting the small input resistance and large output resistance of transistors. It provides calculations for output voltage and explains voltage and current amplification, noting that voltage amplification can range from 50 to 300, while current amplification is always less than one.

What configuration is used in the video to explain the basic amplifying action of a transistor?

• Common emitter

• Common base

• Common collector

• Darlington pair

In the input characteristics of a transistor, what does a large slope indicate?

• Low output resistance

• High output resistance

• Low input resistance

• High input resistance

What is the common value of input resistance considered in the video?

• 10 ohms

• 20 ohms

• 50 ohms

• 100 ohms

How is the output voltage calculated in the video?

• By dividing input voltage by input resistance

• By dividing collector current by load resistance

• By multiplying input voltage with input resistance

• By multiplying collector current with load resistance

What is the output voltage calculated in the video?

• 20 volts

• 30 volts

• 50 volts

• 40 volts

What is the voltage amplification factor calculated in the video?

• 10 times

• 20 times

• 50 times

• 100 times

What is the range of voltage amplification for a common base configuration?

• 10 to 100

• 20 to 200

• 50 to 300

• 100 to 500

Why is the current amplification always less than one in this configuration?

• Because IC is greater than IE

• Because IC is equal to IE

• Because IC is smaller than IE

• Because IC is not related to IE

What is the typical range of Alpha in the video?

• 0.98 to 1.00

• 0.95 to 0.98

• 0.90 to 0.95

• 0.85 to 0.90

What is the relationship between IC and IE in terms of Alpha?

• IC = Alpha * IE

• IC = IE / Alpha

• IC = Alpha + IE

• IC = Alpha - IE