difference between a four point starter and three point
starter

Answer Posted / v.l.kanth

a motor can be run for a higher speed than normal speed by reducing the field current. reduced the field current may not produce enough magnetic force to hold the handle in on position. so handle returns to off position. this is the disadvantage of three point starter.this is the advantage of four point starter. it will not returns to off position

Is This Answer Correct ?    64 Yes 19 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

How to test the vector group of a Yd11 transformer? what are the relations to be checked between various vectors to confirm this vector group?

3997


How many lightning arrestors to be installed on 50MX60MX10M building and is there any formular for that?

1467


What do you mean by transformation ratio of instrument transformer?

628


what is the solution for meger test failed the MV cable?

3517


How to calculate energy stored in an inductance?

639






In what condition the HT fuse breakes?

1480


we have 3 single phase transformers. how will we generate 6 supply from 3 phase supply input

1651


What are the various types of BUSBAR Schemes? explain each

4568


what reason of line current and phase current in star connection and line current and phase current not equal in delta connection?

1568


How to calculate earth fault current for 6.6 KV , 50 HZ , 756 Amps , 3000 RPM , 0.8 PF generator

1606


What are the different types of hydro schemes?

665


what is transient stability analysis means?

1661


What is the method for testing the differential protection stabilty in generator? When the time of starting What will happen if differentail protection connection wrong means?

1758


how to measure earth resistance of a substation

2730


how rectifier transformer work in electroststic precipetatore(esp?

2090