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.

why the transformer ratings in kva

8 Answers   NTPC,

---

How can ou verify the size of conductor 50Sq.mm ACSR

0 Answers   Adani Power, Apar, EFS, Polycab, WHF,

---

WHAT IS THE difference betwwen LT CABLE AND CONTROL CABLE

5 Answers  

---

1. The DC generaror,s induced output emf is connected with a DC motor(as load). when increasing the load of the motor by using brake drum or any way. what are the parameters will changes in both motor and generator(voltage, current, resistance, frequency, speed, torque, power, flux etc...) 2. Similarly for AC generator and AC motor 3. similarly if using DC batteries instead of DC generator, What happens?

0 Answers   IBM, Kirloskar,

---

What is the difference between a fuse and a breaker?

0 Answers  

---

we all know that both the generator and motor are electromechanical conversion devices.....then why we rate motor in kw and generator in kva????

4 Answers   KSEB,

---

what is the function of short circuit maintenance ct and droop ct.

1 Answers   L&T,

---

the problem faced on star or delta winding connection??

0 Answers  

---

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

1 Answers  

---

?? how to calculate lighting system ????

1 Answers   L&T, Synergy,

---

define ac reactor? thier application;

1 Answers  

---

can u light up bulb with out useing neutral

12 Answers  

---