Sage-Tips

What happens if frequency increases in transformer?

So if frequency increases, the secondary voltage or emf increases. And secondary voltage decreases by the reduction of supply frequency. But with high frequency there is increase in transformer losses like core loss and conductor skin effect.

Can a 50 Hz transformer be used for 25 Hz if the input voltage is maintained constant at the rated value corresponding to 50 Hz?

Electrical Engineering Objective Questions { Transformers } Can a 50 Hz transformer be used for 25 Hz, if the input voltage is maintained constant at the rated vale corresponding to 50 Hz? A. Yes. Since the voltage is constant, current levels will not changed.

When input frequency of a transformer is increased What happens to the eddy current loss?

Correct Option: D. If frequency is increased, while V remains constant, Bm will decrease; however, ƒ Bm remains constant. Thus, eddy current loss Pe remains unchanged. Hence, as frequency increases.

What is the difference between 60 Hz and 50 Hz?

In America we use a frequency of 60 Hz while in Europe you will find a frequency of 50 Hz. It may not seem like a big difference, but altering the frequency on a motor can create big changes in how a motor will run. When you alter the frequency of a motor, the strength of the magnets inside the motor will change.

What is the beat frequency of 625 Hz?

For example, if we play two notes, one at 500 Hz and one at 502 Hz, they will beat together with a frequency of 2 Hz. Or, if we play a note at 500 Hz and another at 625 Hz there will be a beat frequency of 125 Hz.

What happens when you double the frequency of a sound wave?

The sound waves below show us that two cycles of the 880 Hz frequency fit exactly in the space of a single cycle of the 440 Hz frequency. If we keep doubling this frequency, we find that all of the resulting pitches sound similar, except that each one is higher than the last.

How many oscillations are in a 10 Hz sound wave?

To be begin the discussion, let’s consider two waves with different frequencies traveling in the same direction: The top wave has a frequency of 10 Hz, while the bottom wave has a frequency of 11 Hz. One second of each wave is plotted, so the top wave shows 10 oscillations and the bottom wave, 11.