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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 magnetic shading coils and what do they do in a magnetic motor Starter?
Shading coils provide a phase shift between the magnetic field of the rotor and stator, which is necessary to get the motor spinning.
Sounds more like you're trying to measure resistance...
What is the formula for the series-parallel connection?
/t=/t1=/t2=/t3...
vt=v1+v2+v3...
rt=r1+r2+r3...
series formula....
Is current is drop when it flowing through the resistor?
Current flows in loops, voltage drops across elements. With relation to current, what flows in, must flow out, so no, current is not dropped across a resistor, it flows through a resistor and voltage is dropped across the resistor.
Belly flops are painful because when a person jumps or dives into water and lands flat on their stomach, the surface tension of the water creates a sudden and forceful impact. This can lead to a shock to the body, particularly the abdominal area and internal organs. The force of the impact can also cause bruising, discomfort, or even injury, making it a memorable and often painful experience.
What is an example of a circuit that doesnt obey Ohms Law?
The easiest circuit that does not obey Ohm's law is a circuit that has a resistance that depends on temperature. For example, if you take a light bulb and draw a current-vs-voltage, you see that in the beginning (under low voltage) the graph is NOT a straight line, but under high voltage the graph is linear. This is because the resistance depends on temperature. the equation V=IR isn't consistent with the graph's shape.
What ohm value or what combenation of resistors are needed to draw 20amps at 120v?
ohms = volts/amperes
6 ohms = 120 volts / 20 amperes
What is trusted platform module used for?
The primary scope of a TPM (in combination with other TCG implementations) is to assure the integrity of a platform. In this context "integrity" means "behave as intended" and a "platform" is generically any computer platform - not limited to PCs or just Windows: Start the power-on boot process from a trusted condition and extend this trust until the OS has fully booted and applications running.
Together with the BIOS, the TPM forms a Root of Trust: The TPM contains several PCRs (Platform Configuration Registers) that allow a secure storage and reporting of security relevant metrics. These metrics can be used to detect changes to previous configurations and derive decisions how to proceed. A good example can be found in Microsoft's BitLocker Drive Encryption (see below).
Therefore the BIOS and the Operating System have the primary responsibility to utilize the TPM to assure platform integrity. Only then can applications and users running on that platform rely on its security characteristics such as secure I/O "what you see is what you get", uncompromised keyboard entries, memory and storage operations.
[edit]Disk encryptionFull disk encryption applications, such as TrueCrypt, the dm-cryptfeature of modern Linux kernels and the BitLocker Drive Encryption feature of some Windowsoperating systems, can use this technology to protect the keys used to encrypt the computer's hard disks and provide integrity authenticationfor a trusted boot pathway (i.e. BIOS, boot sector, etc.). A number of third party full disk encryption products also support the TPM chip.
[edit]Password protectionAccess to keys, data or systems is often protected and requires authentication by presenting a password. If the authentication mechanism is implemented in software only, the access typically is prone to 'dictionary attacks'. Since the TPM is implemented in a dedicated hardware module, a dictionary attack prevention mechanism was built in, which effectively prevents from guessing or automated dictionary attacks, while still allowing the user for a sufficient and reasonable number of tries. With this hardware based dictionary attack prevention, the user can opt for shorter or weaker passwords which are more memorable. Without this level of protection, only passwords with high complexity would provide sufficient protection.
[edit]Other uses and concernsAlmost any encryption-enabled application can in theory make use of a TPM, including:
- Digital rights management
- Software license protection & enforcement
Other uses exist, some of which give rise to privacyconcerns. The "physical presence" feature of the TPM addresses some of these concerns by requiring BIOS-level confirmation for operations such as activating, deactivating, clearing or changing ownership of the TPM by someone who is physically present at the console of the machine.[6][7]
How do you work out the numerator of a transfer function?
G(s)= 60Ka / s(s+2)(s+6)
what is the numerator you have to use in MATLAB?
If a 15-ohm resistor is connected in parallel with a 30 ohm-resistor the equivalent resistance is?
Rt = 10
What is meant by multiple valued logic?
Diversity can be differences in race, heritage, customs, belief systems, physical appearance, mental capabilities, etc.. Diversity should be respected and valued because nobody is completely the same as anyone else, even within the categories above. People tend to reject what is different. Our differences/diversities can lead to growth as a society or it can lead to violence and hatred. We must value our diversity in order to work together for the common good of our society/world.
90 Degrees 90 degree
Assuming you are running in synchronous mode, a counter with a propagation time of 25 ns can run up to 40 MHz. Since there are other gates involved, I would consider a margin of safety to be 20 MHz.
What is the need for limiter in FM receiver?
The limiter clips the top and bottom of the FM signal to remove any AM signal or static that was picked up. This prevents the FM discriminator from seeing those unwanted signals and inadvertently converting them to audio, scrambling the intended audio signal. Simply put, the limiter blocks interference and static making FM reception very clean.
A Geiger-Müller (GM) counter is used to detect ionizing radiation, specifically from various nuclear decay processes like beta decay, gamma decay, and sometimes alpha decay.
Can you test connectivity of circuit using DMM?
Yes. There is a sign of Speaker/sound on a side DMM. Move the knob of DMM on that symbol. Now connect one prob of the DMM on one circuit element & one under that(If you are designing the circuit on PCB or plain board). If a sound come out of that then it means that your circuit element & the portion below that are properly connected.
What do you get when you divide true power in a circuit by the pararent power?
Power factor is truepower divide by apparent power.
What are the advantages of coin based mobile charger?
it can be useful while travelling and when we dont have charger with us during travel
Is loading effect more when load impedance is less then source impedance?
The higher the mismatch between the load impedance and source impedance, the higher the loading effect.
