Answer / md. obaydur rahman

A servo motor rotates very accurately to the user's
direction with a joystick and other controller while an
induction motor spins when it is given power.

Three basic types of servo motors are used in modern servo
systems: ac servo motors, based on induction motor designs;
dc servo motors, based on dc motor designs; and ac brush
less servo motors, based on synchronous motor designs.

Servos have small electric motors in them that provide
power. The motor has a rotor with two attached to it, one on
either side. There are two magnets outside of the motor,
also on either side. When current flows through both coils,
a magnetic field which turns the rotor so that they face the
magnets. When the coils pass their magnets, they get another
pulse of electricity, pushing them towards the other magnet.
The rotor gets two strong pushes every rotation, which keep
it turning. The motor is attached by gears to the control wheel

how we protect the motor & what are the components required for that ?

2 Answers  

---

How to measure power in 2 or 4 or n phase circuit? Please give me a formula.

0 Answers  

---

how i prepare for the written test in mahagenco?

2 Answers   MahaDiscom, MahaGenco, Wipro,

---

solar cell voltage?

2 Answers  

---

In D O l starter motor starts as a star connected ,then in star delta starter also motor initially starts as star how come star delta is preferred from dol

2 Answers  

---

---

what is the effect of leading power factor on Power transformers in existing in major power utility

2 Answers  

---

we change the speed of the synchronous motor by incresing or decreasing a rotor resistance

1 Answers  

---

1kva = kw ?

6 Answers  

---

ther is any difference if we use 240 V A.C,50 Hz,1 Ph. in place of 230 V A.C,50 Hz,1 Ph.

4 Answers  

---

Define the three phase formula fuse.

0 Answers   ABC, Gayatri, UPCL,

---

Difference between SFU & FSU with advantantages & drawback?

1 Answers  

---

What should be the value of earth resistance for an instrumentation/electronic circuit? As per which IS/IEC Code?

3 Answers   IOCL,

---