Why a starter is used for a motor?
- 50 Answers
- 133560 Views
- L&T, Nilachal Polytechnic, I also Faced
- E-Mail Answers
Answer Posted / senthil
When a motor is started it requires more torque, more torque
means more current that is apporx 5-8 times of the normal
load current.Since, the resistance value of the motor is
small it will get damaged due to the excessive current flow.
So, the ultimate aim is to reduce the starting current
( I=V/R) so it can be achieved either by reducing the
voltage applied to the motor or to increase R by adding
external resistance in series to the motor windings.
This is what done in all type of starters either it is a
auto transformer starter or a star delta starter
| Is This Answer Correct ? | 1 Yes | 0 No |
Post New Answer View All Answers
do you have some of interview Questions in power and genrator section in general whith answers
What is the implications when 600 hp motor is started when the unit is running with Transformer of capacity 1500 KVA and DG set of 1000kva
what are pilot cells
Disadventage of cable-gland earthing if any ?
how dia of wire and angles are calculated for overhead shielding wire to protect substation equipment from lightening strokes???
Differenciate between circuit wiring and sub main wiring with illustrations
why cable i burning without tripping. how can protect led street lights
what is the basic need of domestic loads 1- voltage 2- current
Difference between transition and diffusion capacitance
What will be the voltage regulation of a full load and 0.80 power factor lagging load transformer when a two winding single phase transformer has a voltage regulation of 4.5% at full load and unity power factor?
I have 4 DG set with 1500KVA rating. system breakers are 11KV & alternator are 415 Volts. Between alternator & breaker one stepup transformer used. i want to Know what is max. resistance for body earthing & 415 & 11KV V Neuteal earthing. my fault current is 14 times for 2 sec.
Explain bypass capacitor?
Does outdoor isolator loose connection cause short circuit current in that circuit? if yes then how ??
what is the function and use of cable differential protection relay?
What are the main parts of central chiller plant? Explain the function of each stage.
