Comment your answer below, Question is: Prove that in case of a single phase transformer emf per turn is constant. Also draw the phasor diagram at leading, lagging and unity power factor.
Showing posts with label Frequency. Show all posts
Showing posts with label Frequency. Show all posts
Friday, 20 January 2017
Sunday, 15 January 2017
WHAT IS THE FREQUENCY OF DC VOLTAGE.
What is the frequency of DC voltage?
> Due to the graphically straight line, DC voltage has 'NO' frequency but if this voltage is pure DC.
Unpure frequency has 1.2Hz frequency.
What we do to do DC voltage pure?
>We use Capacitor for filter the dc voltages for pure dc voltage with 'NO' frequency.
Your answer will be below. Comment below what you think about this.
> Due to the graphically straight line, DC voltage has 'NO' frequency but if this voltage is pure DC.
Unpure frequency has 1.2Hz frequency.
What we do to do DC voltage pure?
>We use Capacitor for filter the dc voltages for pure dc voltage with 'NO' frequency.
Your answer will be below. Comment below what you think about this.
WHY THE SUPPLY FREQUENCY ON PAKISTAN IS 50HZ
The Frequency of the generated Voltage basically depends on these points:
- No. of poles of the Alternator.
- The speed of generator's rotor (Field Winding).
- So, by increasing these above both factors, we can increase the generated frequency of the System but keep it in mind that Increase in frequency Cost will also increase so that is why both factors are limited.
The Conclusion is that the frequency band of around 50 Hz to 60 Hz is an optimised value of the frequency in both respects. i.e. Cost of generator and advantages of frequency. We can say that the Supply of Pakistan or India is 50 Hz due to these following factors:
- Due to the Cost efficiency.
- Practical difficulties in using 60Hz supply.
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