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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
incident complexity changes
Does an N channel JFET require a positive or negative value for Vgs?
To create the depletion layer required for JFET operation the gate-source junction must be reverse biased.
- for N channel, the channel must be positive relative to the gate meaning Vgs must be negative
- for P channel, the channel must be negative relative to the gate meaning Vgs must be positive
Can a voltage tester be used for precise voltage measurements?
Depends on the test instrument and the currents involved. I use a fairly inexpensive digital volt/ ohm meter, and it reads in 1/10 of a volt increments.
Which circuit has different parts of the circuit on different branches?
Any circuit that even has more than one branch is a parallel one.
Which quote most clearly reflects sensationalism as a motivation for bias in media?
"let's" put the story about the governor's gambling addiction on the front page-everyone will buy today's edition
Which type of people would have been influenced by the Chavín?
People who settled in the cities atop mountains
What kind of electricity is caused by a continuous flow of electrons?
what kind of electricity is caused by a continuous flow of electrons
How can instantaneous current values be determined?
Voltage divided by the resistance of what ever you want to measure the current in.
What voltage is required to move 2A through 5 ohms?
Ohm's law:
- V = I * R
- V = 2 amperes * 20 ohms
- V = 40 volts
What is the value of a 4-band resistor with yellow violet orange and silver as the bands?
47000 ohms with a 10% tolerance
Yellow = 4
Violet = 7
Orange = 1000 (this is the multiplier)
Silver = 10% tolerance
Is a thermocouple an active or passive transducer-why?
is a thermocouple an active or passive transducer?-why?
Are free electron in valence band or conduction band?
In semiconductors free electrons are in conduction bands.
self inductance
What is the signal range for a multimeter oscilloscopes and signal generators.?
There are many different ranges, depending on the type (and expense) of the equipment involved. The range will be printed in the specifications for the device.
The characteristics of a UJT are: stable triggering voltage, negative resistance, high pulse current capability and low value of triggering current.
How loop antenna and dipole antenna can be used interchangeably?
A full-wave loop antenna can be interchanged with a folded dipole without much difference. The input impedance is similar and the only difference is in the directivity: a full wave loop radiates along the axis of the loop, while a vertical folded dipole is omnidirectional.
Why is a low power soldering iron suitable for electronics work?
When working on PC boards or any electronic equipment, heat is the biggest enemy. A low wattage soldering iron is the best because it will generate only enough heat to melt the solder and not heat up other adjacent components that are near to the point that you are soldering. Also when working on electronic equipment use a solder with a low melting point. There is a special low temperature solder with a rosin core that is made especially for PC boards. Never use acid core solder on any electrical soldering jobs.
When a conductor cuts magnetic flux an emf is induced in the conductor. This is known as?
faraday law
A Z-transform is a mathematical transform which converts a discrete time-domain signal into a complex frequency-domain representation.
