Answer / sowmya

actually both mean the same and may differ in some cases.....
because both are used to vary the voltage....

Answer / sajid m

auto transformer secondary is provided by taps that are
fixed in the winding but varic secondary voltage is providig
a sliding tip along the all of winding

Answer / ch.phani

autotransformer is just like a normal transformer provided
with tappings
but with variac any variation in the given range is possible
for example a 230v/270 v variac is used to vary the voltage
in range of (0-270)v

Answer / sunil datta

An auto transformer operates automatically and variac
manually.

We have 3 Gensets 1.500kva,2.380kva,3.250kva How can we connect in common busbar&we have variable load.

4 Answers  

---

condition Autotrip facia come on control panel of electrical transmission line?

0 Answers   Getco,

---

In a company the lines carrying 33KV but the load is below 10000Volts so we know that <11KV we can put 11KV lines but the lines are 33KV,..so how we can step down the voltage to 11KV with out erecting a substation

1 Answers  

---

how to diffrentiate between ac & dc motors from a distance

5 Answers  

---

what is difference between short ckt and overload?

6 Answers   Siemens,

---

Can we put 3 layers of cable tray while installing tray

0 Answers   NTPC, Siemens,

---

what is alternator?

4 Answers  

---

in my observation NCT is used at Karnataka power transmission. why we are not used in andhra pradesh

1 Answers  

---

what is the frequency standard with tolerance level for India?

16 Answers  

---

what is pressure relief valve in D.G ?state its function?

3 Answers  

---

how encoder works?

1 Answers   ITC Infotech,

---

how to find value of resistance when 1 kw consumption for 10 minutes

1 Answers   Manipal Hospital,

---