how can you prove that in CE configuration a transistor has 180 degree phase s

Categories >> Engineering >> Electrical Engineering
Suggest New Category

how can you prove that in CE configuration a transistor has
180 degree phase shifted output

Question Posted / rajkiranraj2

5 Answers
13696 Views
Bhel, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / girish

Apply kvl to ce loop
Vcc=IcRc+Vo
when Ib increases, Ic=beta x Ib increases which increses
IcRc.
therefore Vo decreses to as Vcc is constant..
Thus when Ib is increasing(Positive half cycle) output
decreses(goes negative) and when Ib decreses output V0
increses..producing 180 phase shift between input and output

Is This Answer Correct ?

21 Yes

5 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / nandu202

Before reading my answer,i ask u 2 refer transistor biasing
circuit.

If u look at the o/p:
o/p eqn. can be written as:
Vce=Vcc-(Ic*Re);

As i/p increases,Ib(which wil b the i/p in CE Mode wil
increase so Ic increases so drop across Re increases
resulting in decreased Vce.

If u take a sinusoidal i/p,Correspondingly u add all d
points u wil get a 180 phase shift

Is This Answer Correct ?

15 Yes

7 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / himanshu

see ans in book

Is This Answer Correct ?

9 Yes

5 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / sana

as Vo=Vcc-IcRc
Vcc= constant so we can say that Vo iz directly proportional to IcRc. now when Vb(base voltage) increase Ib increase so Ic increase and voltage drop across Rc increase so Vo decrease....... producing 180 phase shift

Is This Answer Correct ?

5 Yes

2 No

how can you prove that in CE configuration a transistor has 180 degree phase shifted output..

Answer / jyothish

In CE configuration we are plotting the output graph currosponding to the input current Ib. So if the input current increases it increases the collector current Ic. But increase in Ic reduces the voltage drop across the collector and emitter terminals(Vce). So at increased input current a reduced output voltage is occured. So output has 180 Degree phase shift.

Is This Answer Correct ?

3 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

How frequency meter measuring frequency? What is the principle of frequency meter?

2 Answers

how to syncronize two dg sets

3 Answers

What current flows in the transformer primary when its secondary is open?

0 Answers

How many types Switchgears?

4 Answers

i want to do a project on PLC.... please give me an idea.....

1 Answers

How much difference can there be between HT & LT KWH unit consumption at the same load?

1 Answers DLF,

why humming sound occured in HT transmission lines.

9 Answers GE,

For polarity test on a 11/3.3kV 2.5MVA delta-star Unit Auxiliary transformer,415V 3-phase supply was applied at the HV. Connection between Aa was made with a 2.5mm cable. As soon as power was switched on the cable caught fire and burnt. This test was then abandoned. It is noteworthy to say that a similar cable was also used in a similar transformer for the same. The cable did not burn and test was successfully completed with good result. What is wrong? Please, help me out.

3 Answers

how to calculate power factor rating according to load? please give the answer in simple language, i'm not electrical side

2 Answers

why shoud in High tension cable( above11KV etc.,)a semiconducting material coating will be there on insulation?

1 Answers

what is acceptance test in electrical engineering.

0 Answers ABB,

what is range ACB

11 Answers

For more Electrical Engineering Interview Questions Click Here