A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and s

A 3-phase IM is supplied from 50 Hz system. It runs at speed
of 1440 rpm and slip equal to 4 %. Calculate rotor
frequency.
A 50 Hz B 0 Hz
C 4 Hz D 6 Hz

Question Posted / parthjoshi

3 Answers
4921 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Ca..

Answer / varaprasad

ANS: 2Hz

Rotorfrequency = s×frequency of applied voltage to stator = sf

SO,

ROTOR F = 0.04*50=2Hz

Is This Answer Correct ?

7 Yes

0 No

A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Ca..

Answer / ankit

A. 50Hz

Is This Answer Correct ?

1 Yes

1 No

A 3-phase IM is supplied from 50 Hz system. It runs at speed of 1440 rpm and slip equal to 4 %. Ca..

Answer / maaz

Ankit, how it's 50hz please post explaination.

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

i am completed my degree(B.E EEE) 2014 anychance to get electrical licence plz help me

0 Answers JLL,

Which type of moter is used in trains, what is the ratting of supply used explain Working principal?

2 Answers

1. What is maximum permissible distance between smoke detectors ? 2. How do we decide number of smoke detectors required in a large office, warehouse, hall etc ? 3. What should be maximum height of smoke detectors ? 4. Where do we use heat detector, optical smoke detector, temperature sensitive detector ?

0 Answers

capacitor applied voltage is 1100VDC & capacitance value is 82uF how to calculate current of capacitor.

2 Answers

Why generation voltage in thermal power plant is between 11kv to 33kv?

0 Answers

State kirchoff voltage law?

0 Answers

Why is the neutral point of a star connected winding of a motor not grounded?

1 Answers

What is IGBT?Where it is used? What is the difference between IGBT and Thyristor?

5 Answers AC, Formo Plastic, HBL Power Systems, SECL,

1. If we apply dc supply to the primary winding of transformer it will be burnt out. similarly dc supply is given to field winding of syn. motor and armature winding of dc motor, they are safe. (Remember both windings inductive nature) what is the reason behind that?

2 Answers

how can a race around condition be eliminated using master slave flipflop?????

3 Answers

I BOUGHT A HAVELLS ACCL WITH GENERATOR STOP FASCILITY(i.e- BASICALLY IT IS A AUTO CHANGE OVER SWITCH) FOR MY HONDA EXK 2000S HOME GENERATOR (WHICH START IN PETROL & RUN IN KEROSENE). ACCL HAS 8 POINT. 2 FOR MAINS(PH & NUE), 2 FOR LOAD, 2 FOR GEN AND 2 FOR IGNITION POINT(X1 & X2). THE IGNITION POINT IS SPECIALLY FOR AUTO ENGINE STOP WHEN MAINS POWER RESTORE. I CONNECT THIS X1 & X2 POINT TO THE GENERATOR STATER MOTOR & EARTHING POINT. BUT WHEN MAINS FAILS THE GENERATOR COULD NOT START, BUT WHEN DISCONNECT THOSE X1 OR X2 POINT, THEN THE GENERATOR START. BUT WHEN MAINS ON THEN THE GENERATOR SHOULD START, AND WHEN I OFF THE MAINS THE GENERATOR AUTOMATICALLY STOP. PLESE HELP ME HOW I STOP THE GENERATOR AUTOMATICALLY WHEN THE MAINS RESTORE.

2 Answers Honda,

what is the consuption rating of motor in one day

1 Answers

For more Electrical Engineering Interview Questions Click Here