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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
bucking voltage is a voltage which is of opposite polarity to the voltage it acts .
In general the turns ratio is equal to the ratio of voltages. A few turns might be added to the secondary to provide extra voltage to offset the voltage drop caused by the resistance of the secondary when the transformer is supplying a load.
Another AnswerFor an 'ideal' transformer, the answer is yes, and the reason is based on the e.m.f. equations for a transformer which, for the primary winding is: Vp = 4.44 Np f x flux...and, for the secondary winding is: VS = 4.44 NS f x flux
Since the frequency (f) and flux is common to both windings, dividing one equation by the other will result it:
VP/VS = NP/NS
So, as you can see, the voltage ratio and the turns ration are the same.
What is power signal and what is energy signal?
Those signals which have finite energy and zero power known as energy signal..
Those signals which have infinite energy and finite power known as power signal..
What is the use of orthogonality in fourier series?
Orthogonality in Fourier series is used to simplify the representation of periodic functions as sums of sine and cosine functions. Because the sine and cosine functions are orthogonal over a defined interval, the coefficients for each term can be calculated independently. This property allows for the efficient decomposition of complex signals into simpler, non-overlapping components, making it easier to analyze and reconstruct signals in various applications, such as signal processing and communications.
A circuit diagram consisting of diode and transformer?
This is probably a half-wave rectifier.
Rectifiers are used to convert AC to "DC". A half-wave rectifier can be constructed with a transformer and a diode connected between the positive terminal of transformer secondary and the load. This doesn't provide DC power to the load, but instead blocks the negative portions of the AC signal and only allows current to flow into the load while the AC voltage is positive. A capacitor is typically connected across the load to smooth out the voltage, making the input to the load more DC-like. The capacitor charges up when the AC voltage is positive and the diode is conducting, then discharges through the load when the diode is not conducting. This is still not DC power since there is a certain amount of ripple, or variation in the load voltage. Selection of the capacitor value is important to reduce ripple to an acceptable level. The transformer is simply used to change the AC voltage to whatever is desired.
The half-wave rectifier is a very simple circuit. Other kinds rectifiers, for instance a full-wave rectifier, offer better performance.
Design a full adder using decoder and other sutiable gate?
give pin number 7, 11, 13, 14 to a 4input nand gate. this is the sum.
give pin number 7, 9, 10, 12 to another 4input nand gate.
this is the carry...
Another name for thinwall conduit is?
Another name for thin wall conduit is EMT and stands for Electrical Metallic Tubing. The term thin wall is used to differentiate between two conduit systems, thin wall and rigid conduit systems.
Discontinuous function in fourier series?
yes a discontinuous function can be developed in a fourier series
Zero. Watts is the product of Amps x Volts. As you can see an amperage value is needed. Voltage = Watts/Amps. Volts = 200/? 20 volts
When does ALE float to its high-impedance state?
These pins are not at their high-impedance stateduring a hold acknowledge.
What is the power dissipated by a resistor with a current of 0.02 A and a resistance of 1000 ohms?
Power = I2 R = (0.02)2 x (1,000) = 0.4 watt
A: Mathematically speaking the capacitor will never charge to the source because it takes one time constant to reach 63% and so on but for practical uses it is assume to be fully charged in 5 time constants R X C = 1 TIME CONSTANT
What happened to the resistance measurements if you hold the test leads tighter?
If you hold the test leads of an ohm meter together the resistance should go to zero ohms or very close. If it doesn't you're ohm meter is malfunctioning.
ANSWER: Actually that is the first thing to do. It should show a zero reading If not the meter needs calibration adjustment. Otherwise the reading will be off by the that amount as true value.
It starts out with 480 Volts, which is used to power motors. 480 can be stepped down to 120/208/277. The 120 operates normal appliances, while 208 can be used for dryers and welders rated for 208. 277V is usually used for lighting circuits. 3-Phase is used in commercial and industrial settings.
What is the main limitation of solid state microwave device?
The main limitation of a sold state microwave device is its surroundings. The microwave tower needs to be tall enough to overcome trees and other objects getting in the way of transmission.
Why open loop configuration is not used for linear application?
becouse it is nt linear ... basicaly closs loop is linear .. and its loops
This item is normally seen in electrical switch gear (or called "Starter "/ "Motor drive") . This device is to reduce the inrush current during motor starting. Another item "Line reactor" .
