why a single phase motor of same rating takes more amps than
the three phase motor? as single phase motor at 230v takes
5amp per HP while 3 p motor takes 2.5amp per hp at 230v.



why a single phase motor of same rating takes more amps than the three phase motor? as single phas..

Answer / k.prakashchandra

Input to single phase motor is 1150 VA, whereas to 3 phase
is about 1000 VA (line voltage=230 V)per HP. The efficiency
of single phase motor is less than that of 3 phase.

Is This Answer Correct ?    0 Yes 1 No

Post New Answer

More Electrical Engineering Interview Questions

if 2 coil of 1000W connect in series and 200 v is applied across it . then what is the total power of coil when coil have only resistive load .

1 Answers   BSNL,


How to calculate Battery back up time for a 400 AH Battery bank having a load of 20 Amps and charging time required to fully charge this battery bank?

2 Answers  


what is the difference between 2phase & 3 phase?

1 Answers   NTPC,


What is the max demand on your transformer and your company?

10 Answers   Bhel, CBRE, Core Consultants, HPL, IOCL, JLL, L&T, Lemon Tree, MNC, Rashmi, TATA, Tata Motors, Tata Power, Torrent Pharma,


resistance of transformer oil=?

1 Answers   HCL,






i am gng to visa interview this july i have 4 backlogs gre 1010,toefl 75,pls give me the tips pls pls

0 Answers  


what is meant by MCB and MCCB? and what its full form?

7 Answers   Bajaj, JHM Hotels,


) why transformer cannot rotate though the principle behind induction motor is similar to a transformer

3 Answers  


why connecting surge unit in contactor coil

0 Answers  


what is the use of expulsition protective gap in 11Kv line.

0 Answers  


Hi, We have have the major losses between BBT ( Bus Bar Trunking) to LT Incomer & LT to HT incomer, how to arrive the losses?

1 Answers  


How the frame size of a flange mounted AC induction motor is calculated?

0 Answers   APCPDCL,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4452)
  • Electrical Engineering Interview Questions Electrical Engineering (16638)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • 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)