Answer / pradyumna chandra panda

Ans- There is a mechanical speed (s) in every motor,
designed by Manufacture Company according to
construction of motor that should be not less than
synchronous speed.
If we give 60 Hz supply to a motor (which rating is 50 Hz)
there will increase (20%) the synchronous speed then rotor
of that motor tends to rotate at higher rate , no any
trouble will occur be, but there should be support the
mechanical speed (s) and load.

Answer / arvind kumar

As we all are aware with formule

NS=120f/P, if we change f(frequency) the syn.speed will
change as these quantities are directly proportional to each
other.

Answer / santanu

motor will run at a faster rate.

Answer / shahbaz

As we knw that sync speed is 120f/p hens as f increases speed increases but our eddy current losses and hystresis losses are functin of frq hence losses also increases

Answer / kj

First the motor will run faster as the speed is determined
by the frequency. A 4 pole motor will induction motor will
run at about 1440 rpm at 50 Hz. At 60Hz it will run at
about 1730 rpm.
Where the problem may be is that a 50Hz motor will have
more iron in the core and will need a higher voltage to
produce the correct strength magnet field.

Answer / shal

Speed is directly prepotionaly to frequency,IF FREQUENCY INCREASE SPEED WILL INCREASE EG:)VFD (Variable frequency drive

Answer / antarjyami behera

Speed will abrosuvly increased

Do closed loop systems require manual input?

0 Answers   GE,

basic priniciple of induction motor

2 Answers   Electronics, Ramco,

how to introduce yourself

0 Answers  

What are the causes of motor vibration?

3 Answers   Equate,

1.What is wind span ,wight span and normal span, and what is the difference for 132kv transmission .

1 Answers   PKR,

Is it required to use 2 nos of body earthings to any machine though if we use TP with E supply is provided to Machine?

2 Answers   HAL,

what is the difference b/w neutral and earth?what is the need of earthing and what are the different methods for earthing?

4 Answers   NTPC,

how to flameproof electrical motor on the shaft?

0 Answers  

What is the technical name of Transformer Oil ?

17 Answers   Bhel, Don Bosco, Lanco,

What is negative sequence over voltage element?

0 Answers   Green T&D,

How we calculate the average power factor if the one phase is lag and another one is in lead?

1 Answers   DigiTech, MCR,

WHAT IS A COLOUR CODING OF 3 CORE CABLE

11 Answers