There is no specific sound signal for any vessel aground in clear visibility - this would include at night.
By night she would show the requisite lights.
In restricted visibility (fog etc.)
A vessel aground shall sound:
three distinct strokes of a bell,
followed by rapid ringing of the bell for 5 seconds
followed by three distinct strokes of the bell.
If she is over 100 meters in length she should make these signals in the forepart of the vessel
A vessel of less than 12 meters in length shall not be obliged to give the above-mentioned signals, but, if she does not, shall make some other efficient sound signal at intervals of not more than 2 minutes.
followed immediately by the
rapid sounding of a gong for 5 seconds
in the after part of the vessel
These signals shall be made at intervals not exceeding one minute
A power boat that has run aground during periods of restricted visibility is required to sound a prolonged blast on its horn for about four to six seconds at intervals of at least one minute. This signal alerts other vessels to its presence and indicates that it is not able to maneuver. Additionally, the boat may also display the appropriate day shapes, such as a ball shape, to signal its situation.
A power boat that runs aground in poor visibility should sound a signal of three distinct blasts on the horn at intervals of one minute. This signal indicates that the vessel is in distress and requires assistance. Additionally, it is advisable for the boat to display the appropriate signals for vessels at anchor to further communicate its situation.
5 seconds of rapid bell ringing
a signal can never be both energy & power signal because they are mutually exclusive
The unit step signal is a Power signal. Since when we find the power it comes to 1/2 (i.e finite value). And when we find its energy, we got INFINITY. If a signal has energy as infinity and power as a finite non-zero value, then it is a power signal, not an energy signal.
Quiescent power is defined as the amount of power consumed or required by an IC for its proper operation when there is no signal at the input.That is why we say Vin is zero at quiescent power.for example for 741C this power is 85mW.
If the signal is not bounded by a step function, then an exponential signal is neither a power nor an energy signal. So the answer is neither.
Those signals which have finite energy and zero power known as energy signal..Those signals which have infinite energy and finite power known as power signal..
The signum signal, defined as ( x(t) = \text{sgn}(t) ), is an example of a power signal rather than an energy signal. This is because it does not have finite energy; its integral over all time diverges. However, its average power can be calculated and is finite, which classifies it as a power signal. In summary, the signum signal is a power signal due to its infinite energy and finite average power.
The reason FM has lower power and AM has higher power is because the more power that an AM signal has, the farther it will go, but FM does not work that way. AM waves can bounce off of the atmosphere, especially at night. This is the reason that you can hear AM stations from far away at night. FM, on the other hand, can't bounce. FM waves only go in a straight line from the tower and no matter how much power you transmit with, an FM wave will only go a short distance. AM Waves can travel through trees and buildings, and FM can't.
no...it is neither energy nor power signal . Rampis neither energy nor power signalbecause it has infinite energy as well as infinite power.....saket kumar (electronics & communication engineer),BMSCE MUKTSAR (PUNJAB).
A low bandwidth signal does not have more power.