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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
Name a device that causes current to flow?
That doesn't require any special device - it is part of the natural interaction between electricity and magnetism. However, devices that make practical use of this include electric motors, and generators.
How do you test the 11KV HT cables?
The test equipment used to test high voltage cables is a hi-pot test where a high DC voltage is a applied to the cable. This voltage can be from 150% to 200% of the working voltage of the cable.
See related links below.
14 micro farads @ 1.4 seconds.. idk what it is at 2 seconds ;p
How does loading effect affect flow of current?
Ohm's Law says that Voltage = Current x Resistance (Load).
Therefore Current = Voltage / Resistance and as resistance decreases current increases and as resistance increases current decreases.
If the DC voltage of 120 volts is feeding series circuit consisting of 2-ohm, 6-ohm, and 8-ohm regular resistors, the variable resistor for line ammeter to indicate 1.5 amp, the variable resistor must be fixed before the amp.
What is the name of a logic gate that will invert a signal from a 0 to a 1 when added to a circuit?
a not gate or an inverter
channel
What would happen to the deflection of the cathode ray if the particle in the rays were heavier?
deflect more
Is unit impulse an energy signal or power signal?
checking if it is an energy signal
E= integration from 0 to infinity of t gives infinity
so it is not an energy signal
P=limit ( t tending to infinity)*(1/t)*(integration from 0 to t/2 of t)
gives us infinity
so it is not an energy or a power signal
It is pretty simple; take apart a video game controller that has rumble feature and there are the wires and when they attach they will buzz, it hurts.
You should be warned. If you do not already know how you could go about making such a device then you probably don't know how to make one safely. You could very easily go too far with a prank like this. If you are committed to doing this then you can use any kind of charged capacitor. Many of which could kill both you and your victim. Perhaps you need to get some rubber gloves. You can find a capacitor almost any electrical device. Also don't forget to put it back together, if you can?
How do you load eject and reload a mac10?
put ammo in magazine.put magazine in gun (bottom). pull bolt back and release. then take magazine out and pull bolt back again to remove cartrige from chamber................
Explain basic working principle of LCD with diagram?
Placing liquid crystals between two surfaces that are smooth grooves. Smooth grooves on the surface make an angle of 90o a (perpendicular) with smooth grooves on another surface. If the molecules are arranged on one surface from north to south and one molecule on the other surface leads from west to east, there are molecules of which will be forced to rotate 90o. As a result, the path of light that followed the structure of this molecule also rotates 90 ° when passing through the liquid crystal. When electricity stress supplied to the liquid crystal, molecules will arrange themselves vertically lets light to pass through without turning 90o.
b. Rely on the polarization properties (is a collection of very fine parallel lines). Through this polarizing filter, the light from background sources is filtered and then rotated by the liquid crystals and is filtered again before exiting.
The voltage gran of an amplifier is 200 The decibel voltage gain is?
The voltage gain of an amplifier is 200. The decibel voltage gain is? Answer Gain in dB = 20 * log 200 = 46 dB
Is it ok to use an amp rated at 4 Ohms and speakers at 8 ohms and why or why not?
yes you can you will have to wire up the speakers in parallel because with 8ohm it gives too much resistance and the amp will produce unwanted sound i.e. low volume.
Explain double spotting in electronic communication?
it is picking up of the short wave station at two nearby points on the receiver
or
When a receiver picks up the same short wave station at two nearby points on the receiver dial the double spotting phenomenon takes place
A circuit carrying current in one direction is called a?
A circuit carrying current in one direction is called a direct current (DC) circuit. In a DC circuit, the flow of electric charge is constant and does not change direction. This is in contrast to an alternating current (AC) circuit, where the flow of electric charge changes direction periodically. DC circuits are commonly used in electronics and power transmission systems.
P=I^2*R. No. 8,000 watts.
What is a lr44 battery current rating?
Chemical system Zinc / Manganese Dioxide, high drain
Nominal Voltage 1,50 V
Capacity 105 mAh, Discharge over 8,25 kΩ at 20°C to 0,9 V
Internal Resistance Below 20 Ω at 20°C
Operating Temperature 0°C - 60°C
Self Discharge Less than 10% per year at 20°C
Weight ~1,75 g
What is ripple voltage in 12 volt power supply?
A: Ripple is a residual voltage evident as voltage following the AC input frequency. The ripple magnitude is a function of not enough of both filtering capacitance or overloading the output. Increasing capacitance will reduce the ripple or reducing the loading
Why dont we get the transister action by connecting two diodes back to back?
Because two diodes is not a transistor. There is an interaction between the junctions in the transistor, because of their proximity, that you don't get in the two diodes. The only use of modeling a transistor as two diodes back to back is to test a transistor with a multimeter as a quick go-nogo test for basic operability.
