Between Turbo alternator and Hydro alternator which one is more difficult to c

Between Turbo alternator and Hydro alternator which one is
more difficult to cool and why?

Question Posted / iamdon

2 Answers
13851 Views
I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

Between Turbo alternator and Hydro alternator which one is more difficult to cool and why?..

Answer / iamdon

Turbo alternators are more difficult to cool as explained
below.

Turbo alternators rotates at high speed(efficiency is high
at high speed) of 3000rpm or 1500rpm(obsolate now).
High speed of rotor limits the rotor construction as
cylindrical rotor having
LONG AXIAL LENGTH(many stages e.g, LP(Low Presuure),IP
(Intermediate Presuure) and HP(high Pressure) are employed
on common axis in case of turboalternator) and
SMALL ROTOR DIAMETER(economically suitable to house only 2
or 4 rotor poles).

Disadvantage from cooling point of view

1)There is no fanning action due to cylindrical rotor
construction.
2)There are small surface area available for direct heat
radiation.
3)Heat produced in the embadded portion of armature has to
travel a long axial distance to reach at the end for
dissipation.

Author:arbelectbit@yahoo.com

Is This Answer Correct ?

8 Yes

3 No

Between Turbo alternator and Hydro alternator which one is more difficult to cool and why?..

Answer / adhavan

since turbo alternators are smaller in size compared to hydro
alternators,hydro is relatively easier to coolðŸ˜Š
source- B.L THERRJA

Is This Answer Correct ?

0 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

how can maintain the power factor and why and this is how do work tell us

0 Answers Wipro,

what is the difference between Miniature circuit breaker & motor control circuit breaker ?

4 Answers

what is the difference between single phase, 2 phase, and 3 phase in electric meter?

1 Answers

What is EPBX????

3 Answers Emerson,

How many types of Differential protection are there? and what the special arrangement are made at the time of charging of a transformer on the Differential protection?

1 Answers

what is load vs Torque curve & why it is used?

0 Answers

define the active power?

0 Answers

What is the meaning of C1, C61, C91 cable

0 Answers

Explain the term parallel path in dc machin ?

0 Answers UPSC,

why we are using DC violtage for testing of cables....which is used in HV AC applicatons...

1 Answers

What is the formula to find out two phase active & reactive power

0 Answers Areva,

WAHAT IS ELECTRICITY

5 Answers Vijai Electricals,

For more Electrical Engineering Interview Questions Click Here