Answer / nasir.ansari888

Fuses are burned at time of over current flows in the ckt but breaker are just open at the time of over current flows.

Answer / lakshmanan.p

Both are protective devices.Fuses are cannot reuse,but the breaker can reuse.breaker can use for any voltage but fuses used only in the limited voltage only.

Answer / chreamz

A fuse is a normally closed protective device that ionises
(burnout open circuitry) under fault condition or when
current over its rating flow through it. Everything happens
automatically with no external actuator. Once blown, it
must be replaced. A circuit breaker if also a protective
device that gets a closing/tripping command from the relay.
It has internal & external devices (actuator) that bring
about execute the action sent by the relay. The life span
of the CB depends on the load, operation and maintenance.

how to calculate the megger values for motor, cables and transformers?

2 Answers   ITC Infotech,

---

Why do we use 36KV LAS for 33kv line and 9KV LAS for 11KV line?

1 Answers  

---

Why field resistance is greater than the armature resistance in dc mechine

1 Answers   Cape Peninsula University of Technology,

---

my question is Megger of cable insulation or swgr board meggerring some values in one day 50mohms,some other day checking different values(20Mohms). this tell that some person tell that that values ok. how to identify the megger value is correct. pls tell me the answer.

2 Answers  

---

tell me working of air circuit braker.

2 Answers  

---

how can we connect a distance relay to CT core that is for backup protection or metering?

1 Answers  

---

when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??

0 Answers  

---

What is the material used for the core of a high freiquency transformer?

3 Answers   Videocon,

---

WHAT IS MINIMUM AMOUNT OF CURRENT THE HUMAN BEING CANT RECOVER FROM THE SHOCK,WHAT IS THE RESISTANCE OF THE HUMAN BODY

3 Answers  

---

it is possible to measurement of tension of slipring induction motor(SRIM)carbon brushes, any maesuring instruments are available in the markets.

0 Answers  

---

What is the resistance of human body from head to toe?

10 Answers   Bhel, Getco, Infosys,

---

Sir if i have 2kv ups in which 17ah 8 battries load 600watts how much back up time i get and if i put 6kv ups with the same no of battries same amp can i get more back up time please give reply exactly what is the procedure to calculate back up time for different kv,s

3 Answers  

---