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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
What are the applications of jfet?
• High Input Impedance Amplifier.
• Low-Noise Amplifier.
• Differential Amplifier.
• Constant Current Source.
• Analog Switch or Gate.
• Voltage Controlled Resistor.
• JFET as a Switch
• JFET as a Chopper
• JFET as a Current source
• JFET as a Amplifier
• JFET as a Buffer
15 uses of cathode ray oscilloscope?
five possible uses :
* Calibrate an oscillator
* Compare two frequency generators
* Phase shift determination b/w V and I in any CR circuit
* study Beats phenomenon
* study Lisajjous figures
CMRR is common mode rejection ratio. it is the ratio of Differential gain to common mode gain. CMRR=Ad/Ac
INDONET
India's first data communication and computer network was started in March 1986 by CMC Ltd. It was launched as a solution to the growing need for providing timely well processed data to various institutions. In the First phase, they have mainly networked Mumbai, Calcutta and Chennai. Later, Delhi and Hyderabad were also linked as additional stations. INDONET presently has an international gateway which provides access to world wide pocket switched networks like USA's Global Networks Systems (GNS) and Internet.
What is the difference between a wave and signal?
1.wave is a three dimensional object where as signal is a two dimensional object
A 480-volt circuit has an impedace of 60 ohms what is the current?
480 volts and 60ohm impedence
current = volt/impedence
current=480/60
current=8ampeares
State the application of RC coupled amplifier?
To increase the power gain ,high input impedance,low output impedance,and increase the weaken signal
What does a transducer look like?
A transducer will take different appearances depending on the specific type. This is an electronic device that is used to convert one form of energy into another. A good example of a transducer is a microphone.
What is a combination circuit?
It was mentioned that there are two different ways to connect two or more electrical devices together in a circuit. They can be connected by means of series connections or by means of parallel connections. When all the devices in a circuit are connected by series connections, then the circuit is referred to as a series circuit. When all the devices in a circuit are connected by parallel connections, then the circuit is referred to as a parallel circuit. A third type of circuit involves the dual use of series and parallel connections in a circuit; such circuits are referred to as compound circuits or combination circuits. The circuit depicted at the right is an example of the use of both series and parallel connections within the same circuit. In this case, light bulbs A and B are connected by parallel connections and light bulbs C and D are connected by series connections. This is an example of a combination circuit
By Engineer
Muhammad Zaheer Meer GMS
What is third harmonics in ac circuits?
It depends on the frequency in the expression of the function. A third harmonic would mean that the frequency is 3 omega, thus the circuit will consist only of the quantities that have 3 omega in the expression. For example if you have :
e(t)=5sin(3ωt+π/4) and is(t)=7sin(ωt+π/4), in the first harmonic the e(t) quantity
will disappear from the circuit while in the third harmonic the is(t) quantity will be neglected.
For a given hfe calculate hfc in electronic circuits?
how to calculate the value of hfc for a given hfe
A phase current is the current passing through a phase, whereas a line current is the current flowing through a line.
Is an electronic engineer the same as an electrical engineer?
It depends on country, school/education, etc. In some contexts, the two terms are synonyms. In others they have different meanings. In general:
- Electrical Engineers deal mostly with big machines, motors, power lines and power transmission, where the electricity is used to convey large amounts of energy.
- Electronics engineers prefer to be among low-power diodes, circuit boards, electronic chips, etc., where the electricity is used to convey analog or digital information.
Though both Electronics and Electrical Engineers can do the same job in industry they are not same.
Firstly their education is different as an Electronics Engineer will have more of Electronics papers and lesser Electrical Papers than the Electrical Engineer.
Secondly there is a stark difference between Electrical and Electronics that needs to be addressed. Electrical science normally deals with current in medium that readily allow current to flow through them (conductors).
On the other hand Electronics is a branch of science that deals with current in a medium that is reluctant to let current through them or only allow current through them under certain circumstances (semiconductors).
Radar is used to detect concentrations of water droplets in the atmosphere, which tells meteorologists where rainfall, snow and hail are occurring.
What is the use of universal high resistance voltmeter?
A voltmeter must have a very high resistance to measure voltage. A voltmeter is placed in parallel with the element that you are measuring. If the voltmeter has a low internal resistance, then all of the current will flow through the voltmeter instead of the element. You want all of the current to flow through the element, to get an accurate reading of the voltage.
Conversely, an ampmeter must have zero resistance, because it is placed in series with the element.
How do you determine which wire on a led or capacitor is the negative end?
on an LED, the negative end is the shorter side.
on a capacitor, the negative end usually has some kind of marking on it, whether its a line, or an arrow or something.
with ceramic disk capacitors, there is no negative end, you just attach each side to a positive end, usually for a solar panel or something to store energy.
Why insulation resistance is given in mega ohm?
If it were less than a number of Megohms it would not be insulation.
What is average 208-230 voltage?
208V is one standard in the US for light commercial 3-phase power. It measures 208V phase to phase and 120V phase to neutral. 230 (or 240)V refers (in the US) to the common service supplied to residential. It is single-phase, with two hots and a neutral; 120-0-120. One hot and the neutral (120V) is used for receptacles and small appliances, both hots (240V) are used for large appliances, such as stoves, ovens, air conditioning, and water heater.
What is the bandwidth of a signal composed of frequencies from 50 Hz to 500 Hz?
The bandwidth of a signal is the width of frequencies between the highest and the lowest frequency.
So 500Hz - 50Hz = 450Hz bandwidth.
AE7HD
What are the different RTD types?
2 wire.3 wire nd 4 wire...rtd...
3 wire rtd is widly used....hv good accuracy...
