Answer Posted / khurram_bhati01

OP-AMP IS BASICALLY AN IC, E.G 741 WHICH HAVE THE FOLLOWING
CHARACTERISTICS.
HIGH INPUT IMPEDENCE
LOW OUTPUT IMPEDANCE
HIGH GAIN

AN OP-AMP CAN BE USED AS AMPLIFIER AND AS A COMPARATOR.
THESE ARE ITS APPLICATION.

IN AMPLIFER MODE ITS JUST AMPLIFY THE INPUT SIGNAL.
IN COMPARATOR MODE IT IS USED TO SENCE THE TWO INPUT
VOLTAGE, ONE IS REFERANCE AND OTHER VARIES. COMPARATOR
CHANGES ITS OUTPUT STATE AS THE VARING VOLTAGE INCREADED OR
DECREASED FROM THE REFERANCE.

What is inductor?

1415

---

I have need to pervious examinations questions and answer for RRB examination in technical, JUNIOR ENGINEER PLEASE SEND EXAMINATION QUESTION AND ANSWER MY ID k7_r@indiatimes.com

2088

---

Is it possible to isolate a drive by installing a offline ups and also drive should be protected during normal power supply availability and is the use of isolation transformer necessary.

2013

---

sir i want syllabus for junior engineer §ion engineer.

2120

---

What is hybrid parameter?

1091

---

What is normal radiation field out side the reactor building?

1801

---

How is the inverter circuit classified based on commutation circuitry?

1324

---

what is the source of time varying electric field?

2525

---

What are the different types of communications?

1105

---

what is practical application of clipper circuit?

4293

---

for linear polarisation antenna how do u measure polarisation?

2020

---

Suppose in market 4n27 is not easily available so which opto isolator can I use at the place of this? What is 4n27

1064

---

What is working principle of profibus?

1251

---

What are the test parameters to check the proper functionlity of TCP/IP protocol.

2139

---

what is a voltage transfer curve of an op-amp?

1126

---