Practice Current And Voltage Calculations (59.3.1) - Multi-Transistor Amplifiers (Contd.): Numerical Examples (Part B)

Practice: Current and Voltage Calculations

Lesson 59.3.1Multi-Transistor Amplifiers (Contd.): Numerical Examples (Part B)

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6 sample questions

Question 1.
What configuration is used to amplify voltage?
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Think about amplifiers and their common types.
Question 2.
What is transconductance symbolized as?
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It relates to the change in output current.
3Question 3.
What is the voltage gain of a common source amplifier if gm is 2 mA/V and the output resistance is 3 kΩ?
- 3
- 6
- 1
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Use the formula A = gm * R.
4Question 4.
True or False: The threshold voltage indicates when a transistor starts conducting.
- True
- False
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Consider the definition of threshold voltage.
Question 5.
A common source amplifier has a threshold voltage of 1V and a gate voltage of 4V. If the output resistance is 2 kΩ and gm is 5 mA/V, calculate the voltage gain and the current flowing through the device.
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Remember, the voltage gain relies on the relationship with gm and resistance.
Question 6.
In a cascading arrangement, calculate the total voltage gain if the first stage common source has a gain of 10 and the following common drain stage has an approximate gain of 1. What is the overall voltage gain?
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Cascading gains multiply!

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