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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

Why Phase Shift on transistor amplifier?

because that's how God intended the way of the world to be..

What is the need of non uniform quantization?

problem with uniform quantisatonis

1.real audio signal is concentrated near zero

2.human ear is more sensitive to quantisaton error at small value

using non-uniform quantisaton

quantisaton intrval smaller near zero

Non uniform quantization reduces the signal-noise ratio at low signal levels.

What is the impedance of a single phase inductive circuit having a voltage of 240volts and a current flow of 10amps?

Work it out for yourself. The equation is: Z = E/I, where Z is the impedance, E is the supply voltage, and I is the load current.

How transistor use in processor?

each ics are made of transistors.and the ics are used in processors.

How does the depletion region in field effect transistor increases when forward biased?

Because the bulk charge and surface charge interacting with electric field (forward bias) creates the depletion region.

How capacitors are arranged?

Capacitors are one of the standard components in electronic circuits. Moreover, complicated combinations of capacitors often occur in practical circuits. It is, therefore, useful to have a set of rules for finding the equivalent capacitance of some general arrangement of capacitors. It turns out that we can always find the equivalent capacitance by repeated application oftwosimple rules. These rules related to capacitors connected in series and in parallel.

Does current depends on its resistance?

The current flow in an electrical circuit depends on the applied electromotive force (EMF, measured in volts), and the total resistance along the entire circuit. Rising EMF or dropping resistance cause increased current flow

What is ADC in customs clearance proces?

The abbreviation, ADC in customs clearance process can mean several things. It can mean Automated Data Capture, which means that a package was inspected with an automated device. ADC can also mean Additional Collection is warranted when a package has arrived by air.

Is rectifier a non linear device?

diode is nonlinear device,so device from diode is also nonlinear

What regulates the amount of resistance?

As resistance is defined as

R=pl/A

where p=resistivity of the medium

l=length of the medium

A=area

so all these regulates the amount of resistance

What is voltage drop with 30 volts across 25 ohm resistor?

To tell you that we need to know the resistance of the entire circuit.

Why frequency of DC current is zero?

frequency if it will not zero then we cant tell its dc ...

Answer

Frequency is the number of alternations per unit time. As d.c. doesn't alternate, then zero divided by any quantity of time is zero!

What is center tap?

A 'centre tap' refers to a connection midway along the length of a transformer winding. In North America, the 240-V secondary winding of a distribution transformer is centre tapped, and grounded, thus providing the neutral. Each outer terminal of that winding is then at a potential of 120 V with respect to the centre tap. This enables US and Canadian residences to have both 240 V and 120 V supplies. 240 V is then used for high power appliances, such as ranges (cookers), while 120 V is used to supply lower-power appliances, such as kettles, toaster, etc.

What is power and current if resistor is 500 ohm?

The question is incomplete without the voltage across the resistor.

For example:

if V (Voltage across 500 ohm resistor) = 5 Volts,

then,

Current, I = 5/500 Ampere = 0.01 A.

How calculate primary current in transformer the 50kva rating and 11kvprimary voltage?

The primary current is determined by the secondary current. So, if you don't know the secondary current, you cannot work out the primary current.

If the secondary isn't connected to the load, then the primary current is simply the primary voltage divided by the impedance of the primary winding.

You can, though, work out the 'rated' primary current (i.e. the value of current the primary can carry, continuously). For a single-phase transformer, this will be its rated apparent power (in volt amperes) divided by its rated primary voltage. So, in this particular case, we are looking at:

rated primary current = (50 x 103) / (11 x 103) = 4.55 A

What is Q point of a transistor?

Q point which is quiscent (silent) point is the operating point of a transistor where the variations of collector current and collector-emitter voltage take place when signal is applied.

Is the signal with zero frequency a periodic signal?

No, because for a signal to become periodic it must repeat itself in regular intervals of its time period.A 0 Hz signal has a time period equal to infinity , so technically the signal can never complete a full cycle by reaching infinity let alone repeat itself, since the signal is unable to repeat itself in regular intervals its not periodic.

Which is an example of self serving bias?

the bias that we are better, smarter, and kinder than others

What is the function of EA pin in 8051 Microcontroller?

making EA pin high(i.e connecting it to +5V) means that microcontroller should look for the code in its internal memory. while making it low(i.e connecting it to GND) means that microcontroller should look for the code in the memory which is externally connected by the user. so when there is no external memory connected, simply tie EA pin to +5V supply.

Why CdS is always n type semiconductor?

CdS is considered as n-type semiconductor because of the deficiency of sulfur. This creates vacancies with a high electron affinity and causes CdS to acquire electrons easily.