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Why not ultrasonic be produced by passing high frequency alternating current through speaker?
The ability of a speaker to produce ultrasonic output when driven with high frequency AC depends on the design (intent) of the speaker. Typical audio speakers are not designed to go ultrasonic - the cone's mass and resonate frequency just won't support it. Also, the coil reactance is too high for ultrasonic waves so they cannot be produced.
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What is the frequency of a alternating current source?
A/c 60 cycles
Compare alternating current with direct current?
Alternating current changes direction on a set frequency such as 50 Hz, 60 Hz or 400 Hz. Direct current always flows in one direction.
Why does a metallic piece become very hot when it is surrounded by a coil carrying high frequency alternating current?
This is because of the eddy curents produced due to the changing electric and magnetic fields.
What measurement can vary with AC current by not DC current?
HZ. Hertz is the name given to the frequency of the alternating circuit. Direct current (DC) has no frequency since one wire is always positive and the other is always negative; but AC (Alternating Current) rapidly changes polarity, and does so at a rate that is defined by HZ.
What is the differences between direct circuit and alternating circuit?
Direct current and Alternating both are diffrent . Alternating current changes it's cycle 50 times in both direction in one second while the direct current doesn't change it's phase or frequecncy because it is free from frequency or frequency less(direct current).
Alternating current is produced by battery or generators?
A generator produces alternating current.
What is a frequency of ac signal in Pakistan?
The current which changes it direction after every half cycle is called alternating current(A.C) or Alternating current which produced by voltage source whose polarity keeps on reversing with time. By Shahnam qadeer
What is Alternating current is measured in?
Alternating Current is measured in Amperes.
Alternating current is produced by?
Dynamo
What is the current produced by dry cells?
Alternating current.
Which current is produced by earth batteries?
alternating current
Explain about magnetostriction generator in physics?
Magnetostriction generator is used to produce ultrasonic waves. It consist of a ferromagnetic rod and an electronic oscillator.when alternating current is produced by the electronic oscillator the rod experience a small change in length with the production of ultrasonic waves...
what is a frequency converter?
A frequency converter is a power electronic device. It transforms Direct current to Alternating current of desired frequency and magnitude.
High frequency is direct or indirect current?
-- There's no such thing as 'indirect' current.-- Direct current has no frequency. As soon as you mention 'frequency',you're talking about alternating current.
Do strobe lights use ac or dc current to flash?
Strobe lights use ac or alternating current to flash. The frequency of 50 Hz is alternating current's frequency, coming in handy for its flashing.
What is the frequency of a alternating current source?
A/c 60 cycles
How is the radio frequency engergy created during a catheter ablation described?
Radio frequency energy is very rapidly alternating electrical current that is produced at the tip of the catheter that is placed inside the heart.
