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An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ?
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An amplifier is measured to have an internal resistance of 10 kilo ohm...
Given Information:
- Internal Resistance of Amplifier (Ri) = 10 kΩ
- Voltage Gain of Amplifier (Av) = 100 V/V
- Output Resistance of Amplifier (Ro) = 100 Ω
- Load Resistance (RL) = 1 kΩ
- Output Resistance with Load Connected (Rout) = 8 kΩ
- Internal Resistance of Input Source (Rs) = 2 kΩ
Calculation of GM:
- First, we need to calculate the value of the equivalent resistance of the amplifier (Req) when the load resistance (RL) is connected.
- Req = Ro + Rout = 100 Ω + 8 kΩ = 8.1 kΩ
- Now, we can calculate the voltage gain of the amplifier with the load connected (AvL) using the following formula:
- AvL = Av x (Rout / Req) = 100 V/V x (8 kΩ / 8.1 kΩ) = 98.77 V/V
- The transconductance (GM) of the amplifier is given by the following formula:
- GM = Av / Ri = 100 V/V / 10 kΩ = 10 mS (milliSiemens)
Explanation:
An amplifier is an electronic device that increases the voltage, current, or power of a signal. It consists of various components such as resistors, capacitors, diodes, and transistors that are used to amplify the input signal. The internal resistance of an amplifier (Ri) is the resistance that is seen by the input source when it is connected to the amplifier.
The voltage gain of an amplifier (Av) is the ratio of the output voltage to the input voltage. It is a measure of how much the input signal is amplified by the amplifier. The output resistance of an amplifier (Ro) is the resistance that is seen by the load when it is connected to the amplifier. The load resistance (RL) is the resistance that is connected to the output of the amplifier.
The transconductance (GM) of an amplifier is a measure of how much the output current of the amplifier changes with respect to the input voltage. It is given by the ratio of the voltage gain (Av) to the internal resistance (Ri) of the amplifier. It is a measure of the amplification efficiency of the amplifier.
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An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ?
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An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ?.
An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ? for Electrical Engineering (EE) 2024 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for An amplifier is measured to have an internal resistance of 10 kilo ohm voltage gain of 100v/v and output resistance of 100 ohm also when a load resistance of 1 kilo ohm is connected between the output resistance if found to decrease to 8 kilo ohm if the amplifier is fed with the single source having an internal resistance of 2 kilo ohm then find GM MCQ?.
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