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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
How long time will be taken by the 12V 7Ah charger to charge a 12V 22Ah battery?
A charger designed for a 12 volt battery should not be used to charge an 8.4V battery. It is likely to damage the battery and in the worst case can cause a fire.
There are some chargers that can be used with a variety of battery voltages and chemistries but unless you are certain that the charger is safe and effective on a different battery voltage, assume that it cannot be used.
What makes a closed circuit work?
hard one, well it could be referring too Close Circuitwas established to meet the needs of the events industry, providing high-end, professional security services, or possibly a ring circuit as its a continues flow from the consumer unit too the sockets or lights then back to the consumer for termination!??
What would prevent thermal runaway of transistor amplifier?
By providing proper cooling and providing a circuit that produces an automatic means of reducing the current flowing through the device if its temperature starts to rise.
Why short circuit test is done at high voltage side?
1)Short circuit test is performed at rated current. As the rated current on high voltage side is much less than low voltage side, so the rated high voltage side current is easily achieved compared to low voltage side.
2)Also because we cannot short circuit high voltage side, as, if we short circuit high voltage side, voltage of high voltage side essentially falls to zero and since VI=constant, so the high voltage side current will be very high and will burn the winding.
Parallel connection is preferable to use than the series connection in making of
decorative Christmas light because in parallel, the light bulbs are going to have
the same voltage at their terminals leading to the same brightness while for the
series connection, the light bulbs are going to witness a drop in voltage making
some of the bulbs to dim in effect.
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Answer #2:
True, true. All true. But the MAJOR inconvenience associated with a series circuit
is the fact that if ONE SINGLE light burns out, then they ALL go dark, and you
have no easy way of identifying the one that failed.
What is difference between transistor and bias?
"Biasing" applies to transistor amplifier circuits. Simple amplifier circuits can only amplify positive signals. Negative signals cause the amplifier to shut down. However, AC signals in general have both a positive and a negative part. To allow a transistor to amplify AC, we add a positive voltage to the AC signal. Then after it is amplified, we remove the positive voltage again.
The voltage, ac or dc on the base, compared to the emitter to cause operation of the transistor to conduct to the collector or to the emiiter in a NPN transistor.
It is 6 times 8 and the answer is in volts.
What type cable has the highest resistance to noise and carry a signal the longest distance?
The type of cable that enables the longest transmission with the lowest loss is called Goubau line, or G-line, for short. This line has far less loss than either coaxial cable or parallel line (twinlead). By using conical shaped "launchers", G-line creates a type of waveguide.
How DC motor converted into DC generator?
Both dc generator & dc motor are the same and known dc machine.when we give an electrical supply to the dc machine a torque developed due to flux intraction & works as motor.but we used dc machine as a generator we rotate the rotor or prime mover by using external sourse.due to this the rotor conductors cut by the stationary magnetic field and electrical power is generated as per faradays law.
Here the main difference is when we giving electrical energy to the rotor of dc machine produce torque(motor)but when we give the mechanical energy to rotor it produce electrical energy(generator)
What is bandwidth of a impulse signal?
The bandwidth of impulse signal is infinity.because upper frequency is infinity.
Why must sound card and video on a PC be converted from analog to digital?
Primarily because digital systems are more accurate. Additionally, digital technology is replacing older systems with modern devices because digital devices are often much smaller, and require less maintenance.
What is the realtionship among voltage current and resistance in a circuit?
Ohm's Law
Voltage = Current x Resistance
How does a power inverter work?
Power inverters work as an electrical converter which allows a direct current to change into alternating current. This is the commonly known as a DC-AC power conversion. In short, inverters work the opposite as rectifiers that converts AC or alternating current into DC or direct current.
By Ohm's Law, current is voltage divided by resistance, so if you double both the voltage and the resistance, the current would remain the same.
What are specifications of resistor?
The resistance, the precision of that value, the thermal or electrical environment, the style of indicating these values. There are wire-wound resistors, cracked carbon resistors, carbon resistors and so on.
What specifically does resistance reduce the flow of?
Resistance is the opposition of the atoms in any materiel to the movement of the electrons of a certain current ... so the resistance is a long wire, and thus more atoms to pass through that's how it reduces the electron flow
What should the multimeter be set on to measure charge?
Current is measured in amps so the setting on a multimeter would be A
Measuring current with a multimeter is only to be done by someone with training because it can be very dangerous
It is much better to measure current with a clamp meter
What printed circuit board is the most important circuit board in the computer?
The motherboard aka mainboard
When you start at the negative end of the battery, you start to lose electrons and the circuit is closed.
