what is the d/f b/w dol & star delta starter.

Answers were Sorted based on User's Feedback



what is the d/f b/w dol & star delta starter...

Answer / u.v.v.satyanarayana

dol is a direct on line starter means less than 5h.p
machines consists of roughed construction so resistance is
high.so there is no use of starting current limiting.
but in case of high rating motors starters
necessaty.

Is This Answer Correct ?    2 Yes 0 No

what is the d/f b/w dol & star delta starter...

Answer / anandh

The motor will draw a high starting current until it has run up to full speed. This starting current is commonly around six times the full load current.To reduce the inrush current, larger motors will have reduced-voltage starters or variable speed drives in order to minimise voltage dips to the power supply.

DOL starters uses upto 5 HP motors.Star/Delta starters uses at above 5 HP motors.

DOL starter starts the motor in directly at on line.But Star delta starter starts the motor at directly and works at star and after 5 sec works at delta .

Is This Answer Correct ?    2 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

will the turbogenerator operate on leading power factor with out modification in the stator winding.

3 Answers   Toyota,


Why the Petrol Guns in the Petrol bunk are earthed?

3 Answers   ITC Infotech,


HOW DEFINE THE IP FOR ELECTRICAL EQUIPMENT AND WHAT IS THE IP OF PANELS USING IN HAZARDOUS AREA ?

2 Answers  


why we step down the voltage from 440 to 220 in machines

4 Answers  


What kind of maintenance is conducted for generator

1 Answers  






what is the use of Reactive power

2 Answers  


How Arc Produced in Circuit Breaker When the contacts of the circuit breaker open.

1 Answers  


What is capacitance?

0 Answers  


HOW TO FIND THE PRIMARY AND SECONDARY OF TRANSFORMER(IN OFF CONDITION) USING MULTIMETER? IS IT POSSIBLE FIND BY SEEING RESISTANCE???

4 Answers   Areva,


why we use iron corn in transformer instead of wooden core

12 Answers  


why the under of transformer platform is filled with rock stones.

10 Answers   TNEB Tamil Nadu Electricity Board,


how to select correct size of power cable for inverter duty motor

0 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)