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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 two things are needed to make a current flow in a circuit?

For the circuit to be connected all the way round because if there are breaks in the circuit the electricity will not flow back round. and number 2 a battery or a power source because without power where is the electricity coming from to be honest.

Hope it helped. Thanks. xx

What is a substitute for a germanium diode?

There is no exact substitute for a germanium diode, except another germanium diode.

However if the only concern is to get a lower forward voltage drop than that of a silicon diode (0.7V), then a schottky barrier diode may be a suitable replacement as its forward voltage drop (<0.1V) is even lower than that of a germanium diode (0.2V).

How do you draw the circuit of excess 3 adder?

This is something that should only be done by a professional. Take it into a mechanic in order to avoid any issues.

A simple 2.80 m long pendulum oscillates in a location where g9.80ms2 how many complete oscillations dopes this pendulum make in 6 minutes?

Answering "A simple 2.80 m long pendulum oscillates in a location where g9.80ms2 how many complete oscillations dopes this pendulum make in 6 minutes

Why 400 Hz in Naval and Air applications?

At 400Hz all electrical equipment like alternators, transformers and electric motors become smaller to supply the same power than 50 or 60Hz equipment, they are using Bosh 90 amp auto alternators same size as BMW and Mercedes with some internal modifications that is capable of up to 8.4 Kw and 70 Volt 3 phase that is then inverted to 220 Volt with a transformer

What is the transformer turns ratio in terms of inductance of primary and secondary coil?

Turns-Ratio (TR) = Npri/Nsec Inductance-Ratio (LR) = (Npri/Nsec)^2 = (TR)^2 Turns ratio (TR) = (Npri/Nsec) Inductance ratio (LR) = (Lpri/Lsec) = (Npri/Nsec)^2 = TR^2 TR = SQRT[ Lpri/Lsec ]

Is it ok to hook a 16 ohm Speaker up to a 8 ohm amp?

A1: The output impedance of a power amplifier is always less than 0.1 ohms. There are no 8 ohm amplifiers on the market!

A2: I actually just bought a new car radio/CD player that specifically shows 4 ohm speakers on the sticker. It is designed to work optimally with 4 ohm speakers. If you use 8 ohm instead, it will work, but you will not get the full power output that is specified. The amp can only kick out so much voltage and so much amperage - if it is designed for 4 ohm speakers, and 200 watts (stereo, so 100 watts per speaker), it can supply 20 volts (P = V^2 / R). If you used 8 ohm speakers to this amplifier, each speaker would only get 50 watts powered at full output voltage.

Alternatively, if it is designed for 8 ohm speakers and 100 watts per speaker, it can provide 40 volts. If you used 4 ohm speakers instead, each speaker could be given 200 watts at 40 volts, resulting in severe overheating and damage to the amplifier.

This applies to your case as well: it is OK to hook up higher impedance speakers to a lower impedance amplifier, but you will get less power delivered. If you do the opposite (lower impedance speakers to higher impedance amplifier), keep the volume low or you could burn out the amp.

What is the maximum allowable resistance of a 680ohms resistor?

This depends on the tolerance rating of the resistor. There's 1, 2, 5, 10% tolerances. For tighter tolerances, you pay a premium - you can get tolerances as close as .1%. This is defined by one of the bands on the resistor. For a 10% tolerance, the maximum resistance of a 680 ohm resistor could be 748 ohms.

How do you determine form factor of sine wave?

Form factor of any periodic wave is [RMS CURRENT]/[AVERAGE CURRENT].

For sinusoidal wave

RMS current=I/sqrt(2);

AVERAGE current=2I/pi;

Therefore,

Form factor=[I/sqrt(2)]/[2I/pi]

=pi/{2*sqrt(2)}

=1.11

What is the Easily adjustable tuning component in a waveguide?

stub along with plunger is used for tuning... the answer is [stub ,plunger , screw]

iris can't be tuned easily

70 amperes at 12 volts through 2000 ohms of restance equals?

If you had 12 volts across 2000 ohms, you would get 6 milliamperes, not 70 amperes. Ohm's Law: Voltage = Current times resistance.

This situation is impossible per ohms law: E = I x R In order to push 70A through a 2000 ohm reisistor requires 140,000 Volts! In order to get 70A from a 12V supply a 0.171 ohm (171 milli-ohm) resistor is required.

70A @ 12 V is 840 Watts

70A through 2000 ohms is 9.8 Megawatts!! (P = I^2 x R)</P>

Method for minimising logic error?

BASICALLY, to minimise logic error, you need to stop being a tutti and be more of a kutha

What are the applications of precision rectifiers?

Precision rectifiers are used in the design of instrumentation systems.

What are the 4 static properties of a transducer?

The four static properties of a transducer are sensitivity, linearity, hysteresis, and repeatability. Sensitivity refers to the transducer's ability to produce an output change in response to a given input change. Linearity measures how directly proportional the output is to the input across its range. Hysteresis indicates the difference in output when the input is approached from different directions, while repeatability reflects the transducer's ability to produce the same output under identical input conditions over multiple trials.

Do you need an open circuit or closed circuit for a garage door open light?

In order to illuminate the light, you need a closed circuit. It would be normally open, and closed to indicate that the door is open.