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In a CE amplifier the dc load line is the same as ac load line when
  • a)
    ac collector resistance and dc collector resistance are equal
  • b)
    ac collector resistance and dc emitter resistance are equal
  • c)
    ac collector resistance is very high
  • d)
    ac collector resistance is one half of dc collector resistance
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
In a CE amplifier the dc load line is the same as ac load line whena)a...
When ac collector resistance is very high, the net resistance is the same as dc collector resistance.
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In a CE amplifier the dc load line is the same as ac load line whena)a...
CE Amplifier and Load Lines

A Common Emitter (CE) amplifier is a type of transistor amplifier configuration. It is widely used in electronic circuits to amplify small signals. The load line is an important concept in transistor amplifiers. It represents the relationship between the collector current and collector voltage. In a CE amplifier, the load line is the same for both DC and AC signals.

DC Load Line

The DC load line represents the relationship between the collector current and collector voltage for a constant base current. It is drawn on the transistor characteristic curves. The DC load line is a straight line that intersects the collector current axis at the maximum collector current and the collector voltage axis at the maximum collector voltage.

AC Load Line

The AC load line represents the relationship between the collector current and collector voltage for a varying base current. It is the locus of all possible collector currents and voltages for a given signal. The AC load line is a straight line that is drawn parallel to the DC load line and intersects the collector voltage axis at the point where the transistor is biased.

The Relationship between DC and AC Load Lines

The DC load line and AC load line are the same when the AC collector resistance is very high. This is because the AC collector current is very small compared to the DC collector current. Therefore, the AC load line is almost parallel to the DC load line.

Conclusion

In summary, the DC load line and AC load line are the same in a CE amplifier when the AC collector resistance is very high. This is because the AC collector current is very small compared to the DC collector current. Therefore, the AC load line is almost parallel to the DC load line.
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In a CE amplifier the dc load line is the same as ac load line whena)ac collector resistance and dc collector resistance are equalb)ac collector resistance and dc emitter resistance are equalc)ac collector resistance is very highd)ac collector resistance is one half of dc collector resistanceCorrect answer is option 'C'. Can you explain this answer?
Question Description
In a CE amplifier the dc load line is the same as ac load line whena)ac collector resistance and dc collector resistance are equalb)ac collector resistance and dc emitter resistance are equalc)ac collector resistance is very highd)ac collector resistance is one half of dc collector resistanceCorrect answer is option 'C'. 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 In a CE amplifier the dc load line is the same as ac load line whena)ac collector resistance and dc collector resistance are equalb)ac collector resistance and dc emitter resistance are equalc)ac collector resistance is very highd)ac collector resistance is one half of dc collector resistanceCorrect answer is option 'C'. 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 In a CE amplifier the dc load line is the same as ac load line whena)ac collector resistance and dc collector resistance are equalb)ac collector resistance and dc emitter resistance are equalc)ac collector resistance is very highd)ac collector resistance is one half of dc collector resistanceCorrect answer is option 'C'. Can you explain this answer?.
Solutions for In a CE amplifier the dc load line is the same as ac load line whena)ac collector resistance and dc collector resistance are equalb)ac collector resistance and dc emitter resistance are equalc)ac collector resistance is very highd)ac collector resistance is one half of dc collector resistanceCorrect answer is option 'C'. 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.
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