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Electronics Engineering
Electronics Engineering is a branch of engineering that deals with practical applications of electronic components, devices, systems, or equipment. Electronics are devices that operate on low voltage sources, as in electron tubes, transistors, integrated circuits, and printed circuit boards and use electricity as part of its driving force.
24,372 Questions
If the frequency in AM does not change then how are these sidebands formed?
The process of changing the amplitude of the "carrier" so as to add information to it (modulation) doesn't change the frequency of the carrier. But it does create energy at two other newfrequencies.
The new frequencies are equal to (carrier frequency) plus and minus (the modulating frequency). These are referred to as the upper and lower sidebands.
The upper sideband is an exact copy of the modulating signal, but with every component of it shifted up by an amount equal to the carrier frequency. The lower sideband is a mirror image of the upper sideband, with every frequency component in it reflected about the carrier frequency.
Technically no it isn't that dangerous but it can still hurt and fuse electricity up your arm
current doubles
AnswerIt depends on whether the wire is ohmic or non-ohmic. If it is ohmic, then the current will also double. If, like tungsten, it is non-ohmic, then it depends.... because doubling the voltage will cause its resistance to increase.
Ohmic materials obey Ohm's Law, whereas non-ohmic materials do not.
Flip means sell and rocs mean crack because they look like rocks, so flip rocs means to sell crack. Here it is used in a sentence:
Friend 1: Yo, I'm about to flip rocs man!
Friend 2: No way dude!
SMD = Surface Mounted Device.
The legs and contacts on the device are designed to be soldered onto the surface of the circuit board, on the same side as the device.
It provides for a smaller profile and designed for attachment by automated processes.
How do you specify the rating of the shunt?
1)may be voltmeter or clipon meter will be connected across the winding.
2)or in motor winding
we must find amp current and aramture resistance nd then find the ratings
3)formula is rated kva of motor*1000/base kva for transmission line.
What will happen if the signal frequency is greater than cut-off frequency in a waveguide?
If the signal frequency exceeds the cut-off frequency in a waveguide, the wave will not propagate through the waveguide and will be attenuated. This is because the waveguide is designed to support only certain modes of propagation, and frequencies above the cut-off do not satisfy the waveguide's mode conditions. Instead, the signal will either reflect back or be absorbed, leading to a loss of signal strength.
Define thyristor controlled braking resistor?
A braking resistor is used in motion systems where a motor in controlled by a drive. Typically, these are high-speed servomotors controlled by a servodrive. When accelerating, electrical energy is converted to a mechanical force to move a mass. When decelerating, that kinetic energy is converted (via the motor) back into electrical energy, and must go somewhere. To brake quick enough, the energy must be dumped into a power resistor, to be dissipated as heat.
A thyristor (also known as a silicon-controlled rectifier or SCR) is a diode which has a gate terminal on it. Current at the gate allows the thyristor to go into a conducting mode, allowing current to pass.
Modern drives will detect when their DC bus voltage reaches a certain threshold (from the energy being returned from the motor during braking) and begin triggering the thyristor periodically (typically PWM, pulse-width modulation) to disperse this energy as heat.
See links.
Where is interrupt vector table of 8086 Is it in the RAM or ROM?
Actually By Default this is present in BIOS(ROM) and at the boot time Operating System loads it to the RAM.
Ohm's Law says Volts = Current x Resistance so R = 110/6.2 = 17.742 Ohms
Why there is two voltage rating on the same cable like 300V or 500V?
The first figure indicates the phase to neutral or ground voltage and the second is the phase to phase voltage. i.e. Vph-ph = 1.732Vph-n
What if you left your charger on the outlet with out charging your phone what will happen?
at this point nothing has happened... you basically have extended the circuit... except it is still an open circuit... until the circuit is closed electricity doesnt move... the moment you close the circle or circuit(like by attaching your phone) then the electricity can flow... electricity needs a complete path(like a circle) to work
How can one optimize their bandwidth?
There are multiple ways to optimize bandwidth. While working in your browser window, be sure to try to keep one browser window open at a time. This increases the stream. Use an optimizer performance checker online to see how the computer is ranging in bandwidth. See what is running on your computer in your start up properties and stop running what is not needed. A shortcut to shutting down unnecessary running programs on your computer. Start menu, type in the search box, "msconfig". Depending on your operating system, a display for an msconfig window will appear. Just check all that apply. If your computer does nothing, believe it or not, you already did it. Now restart your computer.
unlimited
most radio supply outfits will provide an antenna mast to 78 inches, but you can get your machine shop to make a longer mast for a few $$$ extra
How do you find secondary voltage with a ratio of 1 to 200?
If the primary is 1 and the secondary 200 then multiply the primary voltage by 200.
Since inductive reactance is 90° out of phase from pure resistance, this can be calculated like the hypotenuse of a right triangle. Sqrt( 172 + 62) = 18.028 Ω
The angle is 70.6° lagging.
