Answer / rabi sahu

as its name stated.It's a switch having gear arrangement to
smoothly operate in high speed on both manual and auto mode,

It's work is to isolate the connected equipment from source
of supply.

measurely it used on power system utilities

Answer / satya

switch Gear means its having some switching equipments
like cbs, relays,isolators.
by using all these equipments we can control the voltage or
current
OR
The assembly of apparatus where we can placed and by using
thus we can control the electrical characteristics

these are mainly used at any where like
substations,transmission etc

Answer / arslan dar

The term switchgear is used in association with the electric power system, or grid, substations and refers to the combination of electrical disconnects, fuses and/or circuit breakers used to isolate electrical equipment. Switchgear is used both to de-energize equipment to allow work to be done and to clear faults downstream.

Answer / venkateshwaran

the electrical energy or electrical
power to transfered from one
source to another source with
safely.. protectiongs is second
thing..

Answer / vinoth

switchgear is a interrupting device used in Generation
transmission and distribution.. when fault occurs in a
system it trips the circuit and protect the loads

how to calculate cable size, olr rating, contactor rating and mccb rating,to below given details three phase motor 75 kw,415 v,.85 pf,50 hz?

5 Answers   Cabin Crew, Essar,

---

In 110V DC supply,if a closed circuit gets open, How can we identify the voltage which is measured after the resistor(4KOhm) which is open with negative.it shows 55V +ve when measured, also the actual positive source is 55V +ve .Because there is no voltage drop in open circuit. How can we identify whether this is the voltage which is series with the resistor or the DC source direct +ve.

1 Answers   GE,

---

A two-terminal variable resistor is known as a

1 Answers  

---

hi i wonder will the speed of a 50hz AC motor reduce if i supply it with 25hz?

4 Answers   Divis Laboratories,

---

what will happen if u run induction motor beyond its rated speed

13 Answers   Adani, BARC, Bescom,

---

---

why they were using TRIAC instead relay in some controllers and what is the advantages.

0 Answers  

---

how to calc. current for 5MVAR,50hz,33kv

1 Answers  

---

why only 11kv level is used for transmission purpose? why not 230v?

7 Answers  

---

How you will determine the volume of oil in a particular Distribution transformer.

0 Answers  

---

what is FS cable?? Difference between FS and FRLS??

1 Answers   Multivista Global,

---

hi pal, i am vengatesh from tamilnadu(chidambaram),i have called for the written test for the post of jr executive(ELECTRICAL) of AAI ,I dont know about the question paper pattern,so any kindly help me to face the examination,post me the model question papers and some tips to write my examination to (vengi.annadurai@gmail.com)

0 Answers  

---

what is pressure relief valve?where it is used????

4 Answers   Mecon,

---