Answer / nafees

1. Relay is an electrical device which is used to hold the power supply or we can say that its switching device.
its working principle is electromagnetic.

Answer / raj

Relay is used to connect or disconnect the power to a circuit without interfering the circuit supply or with an external supply

Earth connection is used to ground(Nutralise) the leakage voltage to protect the operator form the shock. if operator get shock the earth connection is defined as not working.

Answer / thiagarajan.e

Relay is electrical device,and it's prime function is a aprotection device,and it can be used for connect and dis connect purpose.

how is fibre channel different from iscsi?

1 Answers  

---

What is the condition to be satisfied in the selection of l and c in a series inverter?

0 Answers  

---

how do u say voltage in capacitor lags by 90degrees in an inductor?

2 Answers  

---

Explain why the aspect ratio of tv video display is 4:3 or 16:9?

0 Answers  

---

Explin E1 T1.

2 Answers  

---

xx7 and xxx are two numbers and we have to mulitply them xx7 xxx ______ xxxx xxxxxx ______ 3xxx17 find all x's

1 Answers   Godrej,

---

what is ISDN & its features

2 Answers  

---

Explain how to calculate knee point voltage? Describe its purpose for differential protection.

0 Answers  

---

Explain the difference between circuit switching and packet switching?

0 Answers  

---

what do you mean by a bulb having 200W,230V supply?

2 Answers   2Com,

---

What is multiplexing? Explain its primary advantage.

0 Answers  

---

Define what is point contact diode?

0 Answers  

---