Answer / shyamkr

stepper motor is more accurate because its rotation angle is
fixed for each elctrical signal.
whereas in servo motor this rotation is not precise as
compared to stepper motor.

Answer / bertrand

Servo motor use analog or (better) numeric signal
processing in order to make the motor exactly the desired
position. The theorical accuracy limit is only the encoder
resolution and the friction of the gearing which exhibit a
non linear behaviour, difficult to be modeled. Currently,
stepper motors are a bit obsolete, survivors of a time
where signal processing was uncommon.

Is MEN and RCD related to each other ?? IF yes then how??

0 Answers  

---

why 3 phase is preferred than 1 phase?

4 Answers   Infosys,

---

why an ideal voltage source has low internal resistance????

1 Answers  

---

kindly arrange to send me RRB Bangalore previous question paper for JE/Electrical and JE/Signal I am going to write exam on 2010

2 Answers  

---

What do you mean by an instrument transformer?

0 Answers  

---

---

what is ALF and ISF in current transformer?

1 Answers  

---

what happens when current(ac or dc)flowing through a boucket of water?please describe it.

3 Answers  

---

which phase is preferred for connecting 1 phase vt used for synchronizing OHL? WHY?

0 Answers   Siemens,

---

magnetizer priciple

0 Answers  

---

as per IE stranded what is max voltage between neutral to earth. 100 kva transformer neutral solid earth. min and max values i need to ans for RTI question

2 Answers  

---

what r the safety measures in UPS ? explain all?

0 Answers   Wipro,

---

CONTACTORS ARE MADE UP OF WHICH MATERIAL?

6 Answers   IOCL,

---