Answer / bhabanipattanayak

As auto transformer contains
only one wdg. It uses less
copper. So copper loss is less
in auto transformer. So it's
efficiency is more than 2
wdg. Transformer.

Answer / pradyumna171

Autotransformer works on principle of self induction ie primary and secondary windings kept one side series and copper loss is more than transformer so it has less efficience.

Q. calculate the value of the resistor to be connected in series with a 100W; 230V lamp so that the wattage of the lamp is reduced to 35W

8 Answers  

---

can anybody tell me that for p.f. Improvment we use capacitor banks but how to decide its capacitance. As we all know how to calculate kvar but what abt capacitance value

0 Answers  

---

1.what is meaing of ups,and used in softwares and sud stations,and main partes in ups. 2.main partes of the Disel Genarator. 3.main partes of the chiller and safty equipments.

2 Answers  

---

where can i get the previous years question papers for APGENCO exam.

0 Answers  

---

what is the accaptable voltage between neutral to earth & How to reduse the resistance of earth in chemical earthing

4 Answers  

---

---

two phases with neutral supply can be taken in 3C X 10 sq.mm cable .

0 Answers   SPCL,

---

when i am going to take trail on a 3ph sq.i/m motor 5.5kw, i observed that RPM of the motor is very low as compared to the rated RPM and also it rotates in clockwise in first ON command,and anticlock wise in second ON command. finally i observed that on phase is no available . but iam not clear about, why the motor is rotates in both directions without any phase interchanging.pls answer to my question.

1 Answers  

---

how to increase senstivity of ct

0 Answers   NPCIL,

---

Where can I get CPWD electrical shedule rates in web? please help me.

1 Answers  

---

What accessories required to give the motor with given circuits and do you know the ratings of those accessories?

4 Answers   Hyundai, TCS,

---

How to test and satisfy the conditions of the vector group YNd1 for power transformer?

1 Answers   Areva,

---

WHY THREE PHESE SYSTEM VOLTAGE APPLIED IN 440 VOLT

0 Answers   Infotech, InTech,

---