How the size of electic machine vary with the sped? Between slow and fast runni

How the size of electic machine vary with the sped?
Between slow and fast running machines of equal ratings,
which one is more economical to design?

Question Posted / iamdon

1 Answers
3561 Views
I also Faced
E-Mail Answers

How the size of electic machine vary with the sped? Between slow and fast running machines of equal..

Answer / iamdon

With the increase in speed, the size of the machine reduces.

Fast running machines are cheaper and more economical to
design.However the maximum speed is limited by the
mechanical stress in the core.

Author:arbelectbit@yahoo.com

Is This Answer Correct ?

1 Yes

1 No

Post New Answer

More Electrical Engineering Interview Questions

Why is shaft current insulation required on large motors & when should it be checked i.e. before or after assembly?

2 Answers Aramco,

If the line voltage is reduced to 75% of its rated value then by what percentage current will reduce ?? 75% 25% 50% no change and why ?

0 Answers

what is surge arresters ?........

7 Answers

why core is useful for a transformer ?and also in its operation ?

0 Answers

How to calculate the volumetric capacity of a oxygen & Nitrogen gas Cylinder if pressure is 145 kg/cm2 & water capacity of cylinder is 67 liters.

0 Answers vssc,

how to select the power contactor in Diffrent AC motors.

6 Answers Titan,

Why relay connected R phase and B phase.?

1 Answers

why we test the core balance of the transformer?

1 Answers Siemens,

What are the tests carried out on transformer while testing at sites?..Pls explain me in detail

2 Answers Suzlon,

how cables go in and come out for distribution from the feeder pillar box?

0 Answers CESC,

refrigeration cycle?

1 Answers MAHINDRA, Shapoorji Pallonji Group(SPCL),

what is the basic difference between synchronous motor,synchronous generator and induction motor

7 Answers NHPC, NTPC, Sail,

For more Electrical Engineering Interview Questions Click Here