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What else can I help you with?
Why do you modulate High frequency waves?
In order to cause the waves to carry information from one place to another. AND THE SIZE OF ATNENNA PROPORTIONED WITH THE LENGTHT OF WAVES IN ORDER TO DECREASE THE SIZE OF ATNENNA WE MUST FIRE HIGH FREQUENCY CAUSE HIGHER THE FREQUENCY IS ,AND SHORTER THE WAVE IS
How does a transistor act as a oscillator?
A: actually any active components will oscillate with positive feedback A transistor can be used as an amplifier along with an LC tank circuit to form an oscillator; it is an active device (as LIBURNO states) which will amplify the feedback signal coming out of the LC tank circuit. The tank circuit has a natural resonant frequency, meaning the L and C together will try to generate a specific frequency; this is then fed back into the input of the transistor amplifier, and the output is fed to the LC tank circuit exacerbating this oscillation until it reaches its' maximum level. An inverting amplifier can be used similarly; the output is fed to the input; this will cause the output to change as fast as the amplifier can. The frequency of this design is much harder to control, but potentially higher. Also, without the LC tank, the output voltage will remain lower.
What is the difference between resonance and resonant frequency?
resonance is the behavior of resonant frequency while resonant frequency is the cause of it. There are basically two types of resonance; Electrical and Magnetic. Resonant frequency is that particular frequency for a system for which the system performs its best. while the system at that particular situation can be called the system at resonance
What happems when frequency is changed and voltage and current remain unchanged?
In magnetic circuits, such as occur in transformers and motors, the flux density is inversely proportional to the frequency, so a drop in frequency could cause overheating through excessive flux density.
The primary cause of foreign object damage is?
Bird collisions
What cause an object to resonate?
Applying a force at the same rate as the natural frequency will cause resonance. If both the frequencies coincide with each other, they form a wave of double the amplitude. If the crest of one frequency and the trough of the other meet, they cancel out each other and the displacement is 0.
What does resonant frequency mean?
Resonant frequency is the natural frequency at which an object vibrates most efficiently when disturbed. It is the frequency at which an object naturally oscillates without any external force. For example, pushing a swing at its resonant frequency will cause it to swing higher with minimal effort.
How can resonance cause an object to break?
Resonance can cause an object to break if the frequency of external forces matches the natural frequency of the object, leading to significant vibrations. These vibrations can weaken the object's structure over time, causing it to eventually crack or fracture under stress. This phenomenon is known as mechanical resonance.
What is it called when vibrations cause a second object to vibrate?
When vibrations from one object cause another object to vibrate, it is called resonance. Resonance occurs when the natural frequency of the second object matches the frequency of the vibrations of the first object, resulting in increased amplitude and sustained vibrations in the second object.
Can a simple pendulum oscillate during free fall motion?
No, a simple pendulum cannot oscillate during free fall motion because in free fall, the object is accelerating due to gravity and there is no restoring force acting on the object to cause oscillations.
What does the term forcing frequency mean?
Forcing frequency refers to the frequency at which an external force is applied to a system. This force can cause the system to oscillate or vibrate with the same frequency as the external force. In physics and engineering, understanding the forcing frequency is essential for analyzing the system's response and behavior.
What phenomenon that occurs when two objects naturally vibrate at the same frequency the sound produced by one object causes the other to vibrate?
This process that determines an object's response to vibrations by varying the frequencies of the electromagnetic (em radiation) energy that it simultaneously reflects and absorbs, in response to its natural harmonies , is called Resonance. Input vibrations, by being either absorbed and cancelled, or reflected and boosting, affect energy response at the substance's natural frequencies, and may be either squelched or amplified depending upon the incident vibrations.
What is it called when small forces cause the amplitude of a wave to increase steadily?
If an oscillating object is subjected to small impulses of the same frequency as the object's natural frequency of oscillation, its amplitude will build up rapidly, depending on how much damping is present. This is caused resonance.
Does sound waves cause objects to vibrate?
Sound waves are detected by the fact that the waves can cause objects to vibrate. The vibrations from the sound waves must be converted into a signal and then amplified and processed. Your ear and a microphone are common detectors of sound.
What do you understand by the term resonances and give two specific examples of its occurrence?
Resonance refers to the phenomenon where an object vibrating at a certain frequency can cause another object to vibrate at the same frequency. An example of resonance is when a singer hits the right note that shatters a wine glass due to the glass vibrating at the same frequency. Another example is the Tacoma Narrows Bridge collapsing due to wind-induced vibrations matching the bridge's natural frequency.
When an object vibrating at near the resonant frequency of a second object cause the second object to vibrate when what occurs?
The vibrations are called sympathetic vibrations or sympathetic resonance.
What occurs when external vibrations match and objects natural frequency?
The object tends to start oscillating. The longer the oscillations occur, the stronger they become. Eventually, the object might be destroyed. This is why soldiers are instructed to "break step" when marching over a bridge. Check the internet for "Galloping Gertie."
