Answer / manish_2march@gmail.com

the main difference that exist is in their construction.
1.d.c motor has commutator while ac don't.
2.Direct current or DC electric motors work for situations
where speed needs to be controlled
3.They can have brushes

UG cable sizes were specified in sqmm. But practically its not coming to mesure. What's the reason for that? And how they specify the size of the cable?

0 Answers  

---

What is lifting power for 1 wb/m2 and 1 A magnet?

0 Answers   Techno Labs,

---

what's burden resistor, why it's used?

1 Answers   Bhel, TVS Group,

---

How is the AVR working?

1 Answers  

---

why transformer capacity is called KVA and motor capacity is called HP/KW? Why transformer capacity cant call HP/KVA?

5 Answers  

---

---

Is it true that IPT are more accurate than CVT for Measuring purpose?

2 Answers  

---

why do harmonics generata?

1 Answers  

---

How to design harmonic filter at the project stage without nowing the harmonics levels

0 Answers  

---

what is the MNA in case of d.c. machin? whaty is the importance of it? hoe it affect the brush position?

2 Answers   TATA,

---

WHAT IS DGA TEST FOR THE TRANSFORMERS.

3 Answers   ABB,

---

Dear friends, i would like to know that what is the exact function of 'exciter winding' & 'aux winding' in Alternator?

0 Answers   NTPC,

---

Why transformer making noise during the operation?

2 Answers   TCS,

---