Electrical Engineering (EE) Exam > Electrical Engineering (EE) Questions > Consider a voltage series feedback network, w...
Start Learning for Free
Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.
- a)1.002kΩ
- b)1002kΩ
- c)2kΩ
- d)2000kΩ
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Most Upvoted Answer
Consider a voltage series feedback network, where amplifier gain = 100...
To find the input resistance of the network, we can use the formula:
Input resistance (Rin) = (Voltage gain / Current gain) * (Feedback factor / Amplifier gain)
Given:
Amplifier gain (Av) = 100
Feedback factor (β) = 5
The voltage gain (Av) can be calculated as the ratio of output voltage (Vo) to input voltage (Vi):
Av = Vo / Vi
Since it is a voltage series feedback network, the output voltage (Vo) and input voltage (Vi) are related by the formula:
Vo = Vi / (1 + β * Av)
Substituting the given values:
Av = 100
β = 5
Vo = Vi / (1 + 5 * 100)
Vo = Vi / 501
Now, we can calculate the output voltage (Vo) using the formula:
Vo = Av * Vi
Vo = 100 * 4V
Vo = 400V
Substituting the calculated values into the equation for Vo:
400V = Vi / 501
Solving for Vi:
Vi = 400V * 501
Vi = 200,400V
Now, we can substitute the calculated values into the formula for input resistance (Rin):
Rin = (Av / Ai) * (β / Av)
Rin = (100 / (2mA / 200,400V)) * (5 / 100)
Rin = (100 / (0.002A / 200,400V)) * (5 / 100)
Rin = (100 / (0.002A / 200,400V)) * (5 / 100)
Rin = (100 / (0.002A / 200,400V)) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = 1,000 * 0.05
Rin = 50
Therefore, the input resistance of the network is 50 ohms.
Input resistance (Rin) = (Voltage gain / Current gain) * (Feedback factor / Amplifier gain)
Given:
Amplifier gain (Av) = 100
Feedback factor (β) = 5
The voltage gain (Av) can be calculated as the ratio of output voltage (Vo) to input voltage (Vi):
Av = Vo / Vi
Since it is a voltage series feedback network, the output voltage (Vo) and input voltage (Vi) are related by the formula:
Vo = Vi / (1 + β * Av)
Substituting the given values:
Av = 100
β = 5
Vo = Vi / (1 + 5 * 100)
Vo = Vi / 501
Now, we can calculate the output voltage (Vo) using the formula:
Vo = Av * Vi
Vo = 100 * 4V
Vo = 400V
Substituting the calculated values into the equation for Vo:
400V = Vi / 501
Solving for Vi:
Vi = 400V * 501
Vi = 200,400V
Now, we can substitute the calculated values into the formula for input resistance (Rin):
Rin = (Av / Ai) * (β / Av)
Rin = (100 / (2mA / 200,400V)) * (5 / 100)
Rin = (100 / (0.002A / 200,400V)) * (5 / 100)
Rin = (100 / (0.002A / 200,400V)) * (5 / 100)
Rin = (100 / (0.002A / 200,400V)) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = (100 / 0.002A) * (5 / 100)
Rin = 1,000 * 0.05
Rin = 50
Therefore, the input resistance of the network is 50 ohms.
Free Test
FREE
| Start Free Test |
Community Answer
Consider a voltage series feedback network, where amplifier gain = 100...
RI = VI/II = 4/2m = 2kΩ
RIF = RI(1+A.β) = 2k(1+500)
= 1002kΩ.
RIF = RI(1+A.β) = 2k(1+500)
= 1002kΩ.
Attention Electrical Engineering (EE) Students!
To make sure you are not studying endlessly, EduRev has designed Electrical Engineering (EE) study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Electrical Engineering (EE).
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Similar Electrical Engineering (EE) Doubts
Top Courses for Electrical Engineering (EE)View all
Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer?
Question Description
Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? 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 Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer?.
Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? 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 Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer?.
Solutions for Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Electrical Engineering (EE).
Download more important topics, notes, lectures and mock test series for Electrical Engineering (EE) Exam by signing up for free.
Here you can find the meaning of Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Consider a voltage series feedback network, where amplifier gain = 100, feedback factor = 5. For the basic amplifier, input voltage = 4V, input current=2mA. Find the input resistance of the network.a)1.002kΩb)1002kΩc)2kΩd)2000kΩCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Electrical Engineering (EE) tests.
|
|
Explore Courses for Electrical Engineering (EE) exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup