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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
Future scope of dc motor speed control using rf?
The DC motor speed control has a scope of four speeds. The control speeds include; high, medium, low, and off.
How much current flows through a circuit if 2 coulombs of charge flows each second?
Current in amperes is coulombs per second, so 2 coulombs per second is 2 amperes.
What are the advantages of SSB and DSB over AM?
advantage of SSB ic can save power..and also the bandwidth requirements
How can you draw a 4 bit full adder using 1 bit full adder?
The 1 bit full adder has three inputs, A, B, and CarryIn. It has two outputs, Result and CarryOut. To connect multiple 1 bit full adders together, bus the A and B inputs into their respective buses, bus the Result outputs into its bus, connect the low order bit's CarryIn to LogicFalse, and daisy chain each bit's CarryOut into the next bit's CarryIn. Use the last bit's CarryOut as overall CarryOut.
Amplifiers comes in IC packages diagram is triangle with +/- input by adding a resistor r1 in series to the - input the gain can be found by adding a resistor from output to the - input The + terminal must be satisfied with the proper resistor
A class B amplifier is biased?
hi i m nishikant
Why you use 455kHz frequency as an intermediate frequency in communication?
The intermediate frequency in the superheterodyne receiver is chosen as the desired compromise between sensitivity and selectivity. 455kHz is used in AM broadcast applications, while 10.7mHz is used for FM. The IF stage is tuned for a steep skirt passband at that frequency, allowing only the desired heterodyned (shifted) input signal to make it through to the demodulator.
On my c240 2001 car amplifier is located in the trunk on the right side (passender side of the vehicle) behind the carpet.
How does DC to ac power supply work?
If having DC and AC is required then a PWM pulse width modulator is required to chop the DC to make AC
It is a horizontal line of ladder logic.
Ladder logic is a language used to program PLC's.
It's called Ladder Logic because the programs are formed in the shape of a ladder. Each horizontal line in the program looks like the "rung" of a ladder, which is why they call it Ladder Logic.
It is................................................................................................................................................................................................................................................ i have no idea :P
The capacitor in which only a specific number of electric lines or electrons can pass through a unit area is called as 'Flux Capacitor'
How many vacuum tube in one transistor?
There are no vacuum tubes in a transistor. A vacuum tube is an electronic device that uses a heated cathode in a vacuum to direct and control an electron stream to an anode, also known as the plate. The vacuum tube is old technology, but it is still used today, typically in high power applications such as transmitters. A transistor is an electronic device that uses solid-state semiconductors to similarly control an electron stream. The transistor is newer than the vacuum tube. It offers lower power, smaller size, easier use and other enhancements over vacuum tubes, within limits, of course, such as voltage and power.
Why microwave antennas are directional?
As frequency increase the wave length decreases like a beam of light it cannot bend therefore directional
If you increase the voltage across the DC motor then motor speed will?
Go up, then stop as it burns out if you push it too far.
What are the precaution before using a multimeter dc voltmeter and dc ammeter?
Make sure the the Leeds are inserted in the right hole. Make sure that the meter is set to the range of voltage or current you expect
4027 master slave flip flop theory?
The 4027 master-slave filp-flop is a pair of CMOS edge triggered flip-flops connected in series. Assuming that you don't assert the set or reset inputs (which are overrides) the first flip-flop will follow the input on the leading edge of the clock, with the other following on the trailing edge.
A: Due to undesirable external voltage changes like the AC line dropping out occasionally the DC or input signal will become a variable voltage that is referred as voltage fluctuation but it can refers to all kinds of these kind of problems.
What does reducing circuit size in a microprocessor result in?
The reduction in the size of the circuit in a microprocessor will (generally) allow the device to be run at higher clock speeds. This will be due to shorter circuit pathways. It will also increase the challenges related to keeping the device cool, and there are some other variables that come into play when we scale something like a micro-p down.
1) PRINCIPLE:
Whenever a conductor cuts magnetic flux, dynamically induced emf is produced in it. ( Faraday's Laws of Electromagnetic Induction ). This emf causes a current to flow if the conductor circuit is closed.
2 ) OPERATION:
Field winding produces magnetic field in D.C. generator. Armature is coupled to the prime mover. Prime mover produces torque so the armature rotates. The armature cuts the magnetic field so the emf is induced in the armature. When load is connected to the armature, electric current flows from the armature conductors, through load and back to the armature conductors. Now, as current flows through the armature and it is in the magnetic field, torque is produced due to it. (This torque is called back torque). If the load on the generator is increased, the back torque increases so the torque of the prime mover also increases and the input power to the prime mover increases. In this way, the generator converts mechanical energy into electrical energy.
It should be observed that the emf induced in D.C. generator, is A.C. ( so the emf induced in the armature is alternating in nature. ). Then with the help of commutator, it is converted into D.C. Rings and brushes are used to take the emf outside.
The effective value of ac voltage is calculated as?
EFFECTIVE HOW ABOUT AVERAGE .639 of peak.
AnswerThe 'effective' value of an a.c. voltage (or current) is the same as its 'root-mean-square' (r.m.s.) voltage which, for a sinusoidal waveform, is 0.707 Umax.
The 'average' value of an a.c. voltage (or current) is zero over a complete cycle, or 0.639 Umax, over half a cycle (usually applied to rectified waveforms).
What is the definition of circuit diagram?
A circuit diagram, or schematic, is a picture of how the components in a circuit are connected together. Using the diagram, you can perform analysis of the design. You can also use it to troubleshoot a fault in the circuit.
