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danialyel
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Join Date: Aug 2016
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Motor Control And Drive

08/17/2016 3:17 AM

explain the effect of the following condition to dc motor

a)mechanical overload

b)supply voltage changers

explain the effect of the following condition to ac motor

a)mechanical overload

b)supply voltage changers

c)single phasing

d)frequency changers

please urgent!!!!!!
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user-deleted-1105
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#1

Re: motor control and drive

08/17/2016 3:39 AM

No... shalln't
How about a nicely constructed question, or a context or maybe a "please"?
I'm not doing you homework!

Del

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TonyS
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#2

Re: motor control and drive

08/17/2016 4:08 AM

No one will do your homework on here

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phoenix911
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#10
In reply to #2

Re: motor control and drive

08/19/2016 1:41 PM

That would be 'e'

e) No one will do your homework on here

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Tornado
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#3

Re: motor control and drive

08/17/2016 5:41 AM

Writing a whole post in all-caps, boldface, or italics is considered as shouting.

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English Rose
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#4

Re: Motor Control And Drive

08/17/2016 8:16 AM

Oh pur-lease!

Why would we help someone who can't be bothered to read his own notes (attend lectures?) to become an engineer?

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redfred
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#5

Re: Motor Control And Drive

08/17/2016 8:54 AM

Do these terms mean anything to you?

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JRaef
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#6

Re: Motor Control And Drive

08/17/2016 11:05 AM

Must be a management student, learning how to get other people to do their work for them rather than learning how to do it themselves...

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dhayanandhan
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#7

Re: Motor Control And Drive

08/17/2016 1:12 PM

For DC motor

Mech.Over load, - motor can stall, shaft may brake, and over current will be after effect, fuse may blow, or motor will trip

Supply Voltage changes - power out put by motor will fall speed also falls.

For AC motor

Mech.Over load, - motor can stall, shaft may break, and over current will be after effect, fuse may blow, or motor will trip

Frequency changes - speed will vary proportionally. If over frequency, speed will proportinally increase, power demand will vary as cube of speed - If the drive is for the pump - the pressure will vary as the square of speed. affinity law comes in to picture.

Single phasing, motor will continue to run in 2 phaase, over heating of winding will ocur.

Supply Voltage changes - power out put by motor will fall., will try to draw more current, Speed also falls,

DHAYANNADHAN.S
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danialyel
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#9
In reply to #7

Re: Motor Control And Drive

08/18/2016 3:11 AM

Thank you so much.. I appreciate your answer..
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lyn
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#8

Re: Motor Control And Drive

08/17/2016 10:07 PM

A: explain the effect of the following condition to dc motor

a)mechanical overload

b)supply voltage changers

The answer to A is b)

B: explain the effect of the following condition to ac motor

a)mechanical overload

b)supply voltage changers

c)single phasing

d)frequency changers

The answer to B is a and c)
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Users who posted comments:

danialyel (1); dhayanandhan (1); English Rose (1); JRaef (1); lyn (1); phoenix911 (1); redfred (1); TonyS (1); Tornado (1); user-deleted-1105 (1)

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