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

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

Answer / himanshu

see ans in book

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

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.

motor work in hat principle generator work in what principle transformer work in what principle pls explain with details or answered to ramadoss.sepc@gmail.com

1 Answers   Vestas,

---

dear all, How do i increase UPS (1000VA)backup time ? i have connected 2 12v wold you please 120 aH battery externally. ups charge the lead acid battery only 12.7 volt. backup time only 10.00 minuts and gose off. can any one of you help me?

1 Answers   Technomax, ups,

---

What is the multiplying factor if line ct ratio is 1000/1 and meter ct ratio is -/5 ?

1 Answers  

---

what is the function of closing coil in air circuit breaker?

0 Answers   Fresher,

---

Difference between mcband isolator

1 Answers  

---

---

how to calculate the capacitor to maintain power factor?

0 Answers   Bosch,

---

if we install two earth pits with a clear space of 5m without any interconnection,by checking the digital multimeter will it show continuity between earth pits? If so what would be the approx. value

0 Answers  

---

what is the range of maximum DOL and SDS can be use for pump and fan application

0 Answers  

---

Draw a circuit diagram in which if button is open we can use socket and bulb as a series test circit and if button is close than simple we can use socket as any load purpose.

0 Answers  

---

how do we calculate length of starting time and repeated starting of a direct online starter?

0 Answers  

---

is dc shunt moter oprate on ac? if no why? if yes how?

8 Answers   IOCL, JJJ, Power Grid,

---

when ac current flows thru d coil of a contactr,it energizes,magnetic field attracts d contact of the coil...nw wont dt ac current in d contct induce current back on to d coil thru mutual inductance leading to high currnt in d coil

0 Answers  

---