An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will o

An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull
out torque will occur. The rotor resistance per phase is 0.3
ohm and motor stalls at 650 rpm. The rotor frequency at
maximum torque point is
A 3.33% B 4.44%
C 5.55% D 6.66%

Question Posted / parthjoshi

1 Answers
3699 Views
I also Faced
E-Mail Answers

An 8 pole, 50 Hz, 3-phase IM is loaded to a poing where pull out torque will occur. The rotor resi..

Answer / jay laruja

-slip at 650 rpm

120fs/p
= (120 x 50) / 8
= 750

slip = (Ns + Nr) / Ns = 0.133

fr = s x fs = 0.13 x 50 = 6.667%

there you go buddy ;)

Is This Answer Correct ?

1 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

would you please give me any idea about the BARC interview question on electrical? i have an interview on 1st july.....plz hlp me.......its urgent......

0 Answers BARC,

What is the purpose of Rotor earth fault relay and How to test the Rotor earth fault relay in generators and What is the procedure?.

1 Answers

which pump used in WTP explain the function of VFD how to dtermine capacitorbank of capacity one plant

0 Answers Dalkia,

can any one provide me a connection wiring diagram for a DG set control panel along with BOM?

0 Answers Omaxe,

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

4 Answers

send me the upsc conventional papers of 2006

1 Answers Juniper Networks, Siemens,

What is meant by Active and reactive power?

5 Answers Siemens,

1) why a dg set shows variation of power factor and load when synchronised with other dgs? 2)Why the load sharing is not become equal in all dgs?. 3)When a dg set will not run on auto start?

0 Answers

sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan

0 Answers IOCL,

how to work exciter in 10 MW alternator?

2 Answers

What is the different between buchholz relay and pressure relief device?

2 Answers

What is error of a measurement?

0 Answers

For more Electrical Engineering Interview Questions Click Here