Electronics Engineering

I am assuming the charge carries are electron and hole in an semiconductor.

the mobility of charge carriers can be understood as the easy with which the carrier can move in a semiconductor.

the mobility depends on many factors like the semiconductor material (because of the crystal structure), semiconductor specimen temperature, the effective mass of carrier, the applied electric field across the specimen.

in general if we compare the mobility of electron with hole in a silicon semiconductor, the mobility values at room temperature is some thing around 1350 cm^2 per volt sec and 450 cm^2 per volt sec for electron and holes. that is mobility of electron is 2-3 time more than the holes in silicon.

This question follows Ohm's law which states, "Current is directly proportional to the applied EMF (voltage) and inversely proportional to the current in the circuit.

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Frequency is a metric for expressing the rate of oscillation in a wave. For planar and longitudinal waves, this often expressed in oscillations-per-second or Hz. Angular frequency used for expressing rates of rotation, similar to revolutions-per-second, and is usually expressed in radians-per-second. It can be thought of as a wave with a constant amplitude where the amplitude rotates in a circle in space.

The two differ by factor of 2*Pi.

Omega (angular frequency) = 2*Pi*f(frequency in Hz)

You must have a voltage on the gate that exceeds the turn-on threshold of the SCR. Typically around 0.65v. Then you must maintain a minimum holding current from Anode to Cathode. Once turned on, the SCR will remain self latched in the on state until the current through the Anode and Cathode falls below the minimum self holding current.

Modulation Index is the ratio of the maximum deviation frequency to the frequency of modulation. In other words it is the ratio of the spread in frequency spectrum to the frequency that was used to modulate the carrier.

For FM,

modulation index is given by the formula

mf= df/f

where,

mf=modulation index for FM

df=difference in carrier frequency

f=frequency of the signal

Its cam table..

waht si a picture of signification

Triangular wave

Open drain or collector means ,collector and drain terminal of BJT and MOSFET will be left open during implementation/fabrication.They will not be connected from Supply Vcc or VDD.

Anode and Cathode.

Following components can exist
1. 1000 KHz
2. 1000.3 KHz
3. 1002 KHz
4. 999.7 KHz
5. 998 KHz

No, an electrical starter can not turn without an electrical source.

A: Alternating voltages means the phase factor must be considered.

The Wharfedale Pro SE-670 amplifier typically retails for around $300 to $500, depending on the retailer and any ongoing promotions or discounts. Prices may vary based on location, availability, and whether it's new or used. It's recommended to check multiple online retailers or local music equipment stores for the best deal.

Solar inverter testing typically involves several key procedures to ensure safety, efficiency, and performance. First, the inverter is subjected to electrical tests, including input and output voltage measurements, to verify its operational parameters. Next, efficiency tests are conducted by measuring how well the inverter converts DC power from solar panels to AC power for the grid. Additionally, safety tests, including isolation and grounding checks, are performed to ensure compliance with relevant standards and regulations.

the excitation voltage applied the power input to the prime mover

electrical signal can be converted to an optical sigal by using a LED or SOA(semiconductor optical amplifier). LED is the cheaper option but have the drawback of larger linewidth. Typically used for LAN (local area network). SOA produces an optical signal mostly by direct modulation tecnique .

Wikipedia says: "The ohm is defined as the resistance between two points of a conductor when a constant potential difference of 1 volt, applied to these points, produces in the conductor a current of 1 ampere, the conductor not being the seat of any electromotive force."

Basically a lot of measurements are defined in terms of other measurements and it's hard to find a basis for any of them that isn't arbitrary; the important thing is how the different measurements relate to each other.

It is a type of resistor called a potentiometer, which is a resistor with a movable center tap. The full volume signal is applied across the full resistor and the variable volume signal is taken off the movable center tap.

The transformer can be tested on open and short circuit to find the iron losses and copper losses separately, which uses a fraction of the power than having to run the transformer on full-load.

A page fault occurs. The service routine chooses a page to use. If that page is dirty, i.e. has been written to and needs to be saved, then it is written to the page file. Then the new saved copy is loaded from either the page file or from the executable file. The page registers are updated, and the faulting instruction is retried.

no , 1hz is 1 oscillation , 1000hz ( 1khz ) is 1000 oscillations !

It's called city-block distance, because it is calculated as if on each pixel between your two coordinates stood a block (house) which you have to go around. That means, you can only go along the vertical or horizontal lines between the pixels but not diagonal. It's the same like the movement of the rook on a chess field.

GSM stands for : Global System for Mobile Communication

GPRS stands for : General Packet Radio Service