Biology; Chemistry; Physics: Post your doubts here!

[Dukeofwin]

What will happen if Split rings are used in AC generator instead of Slip rings?

 

[NIM]

when an AC current flows through the coil around a ring of soft magnetic material such as iron, it produces a magnetic flux because of the constantly changing direction of current. this magnetic flux is carried around in the iron ring to the output wires, where the reverse occurs and a changing magnetic field produces an AC current. by changing the number of turns in the input and output coils, we can vary the voltage according to our needs.

i already got the answer....bt still thnx a lot...

 

[luckywang]

Nope! I cant be wrong on this one! Voltage is decreased when sent to our homes only 220-240 volts out of 22000 or something! Thus its a step down!

ya... but before transmit, step up is used to prevent joule heating...

 

[Dukeofwin]

A general Pardon from everyone to whom I gave the wrong answer! Sorry for using my guesswork and leading you people to confusion!
No more MCQ replies form my side now!

Contract------ Signed!

 

[Dukeofwin]

ya... but before transmit, step up is used to prevent joule heating...

Yes, but for sending it to homes STEP-DOWN is used! Which is what I said!

 

[luckywang]

What will happen if Split rings are used in AC generator instead of Slip rings?

can split rings be used in AC? maybe cause incomplete electricity transmission... this is question u think or pass year paper?

 

[luckywang]

A general Pardon from everyone to whom I gave the wrong answer! Sorry for using my guesswork and leading you people to confusion!
No more MCQ replies form my side now!

Contract------ Signed!

why? learn from the mistake?

 

[Dukeofwin]

can split rings be used in AC? maybe cause incomplete electricity transmission... this is question u think or pass year paper?

I think i've read it from past papers!

 

[luckywang]

Yes, but for sending it to homes STEP-DOWN is used! Which is what I said!

ya.... its right... just tell u step-up and step-down are used to transmit electricity....

 

[Dukeofwin]

why? learn from the mistake?

Nah, i would rather read people's reply and learn that way!
More convincing for me!

 

[luckywang]

I think i've read it from past papers!

not sure then... tell me the answer if u find it out...

 

[SalmanPakRocks]

Hey guys....need help in these questions fast: ashiqbal SalmanPakRocks

1. w11 qp_21 Question 3 (a) (i)

2. s11 qp_22 Question 5 (a)

3. s10 qp_22 Question 11 (a)

4. w10 qp_22 Question 9 (a)

5. w09 qp_2 Question 11 (c) (i)

THanks in advance...please please reply as soon as possible

1. Here

2.

 

[luckywang]

Nah, i would rather read people's reply and learn that way!
More convincing for me!

at least give ur opinion?

 

[Fallen316]

1. Here

2. View attachment 10662

you forgot to add the ammeter.

 

[SalmanPakRocks]

you forgot to add the ammeter.

Yeah! I did forget to add many things. But this would just give him the concept on how to do it.

 

[Dukeofwin]

at least give ur opinion?

Only when i think i'm damn sure!

 

[Fallen316]

question
Q) how does size of the bulb affect the range of the thermometer ?

 

[convent2012]

phy june08 paper1 15??

 

[Fallen316]

phy june08 paper1 15??

use the formula
"degree celcius = [l(theeta) - l(ice point) / l(boiling point) - l(ice point)] * 100 "
40 = [ l(theeta) - 2 / 22 - 2] * 100
l(theeta) = 6cm , OPTION A

 

[SalmanPakRocks]

Next time, please post the link for the past papers you have query in.