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Electrical Engineering

Electrical engineering is a field of engineering that deals with the study and application of electricity, electronics and electromagnetism.

23,056 Questions

If a neutral atom loses or gains an electron what is formed?

An Ion. More specifically if it gains an electron it becomes an anion and it it loses an electron it becones an cation (pronounced Kat-ion)

Should you connect both ends of a battery in to a circuit?

The circuit won't do anything until both terminals of the battery are connected

to the correct [two different] points in the circuit. As long as either terminal of

the battery remains disconnected, the circuit is "OFF".

What is high frequency ballast?

by varrying some paramers liike speed and voltage we ccan varry it

by varrying some paramers liike speed and voltage we ccan varry it

by varrying some paramers liike speed and voltage we ccan varry it

by varrying some paramers liike speed and voltage we ccan varry it

How do you measure 3 phase voltage?

Three phase voltage can be measure line to line (L1-L2, L2-L3, or L1-L3) with a quality digital voltmeter. In the United States, typical 3 phase voltage is 208-230VAC, or 460-480VAC measured line to line. Line to ground or neutral with a 208-230V system will yield 110-120VAC, which provides standard household power for things like televisions and microwave ovens.

Four inductors each having an inductance of 0.6h are connected in series what is the total inductance of the circuit?

Four (4) 0.6 Henry inductors connected in series should add up to 2.4 Henry. An electrical event passing through one inductor in time "T" will require "4T" to pass through all four inductors. Hence, inductance adds up in a series of inductors connected end to end.

What increase and decrease resistance?

Increase in resistance means that when the resistance of the substance increase by application of some external sources like temperature etc. or when the flow of current through the substance gradually decreases then the resistances increases. Vice versa in case for decrease in resistance.

Alternative Answer

Resistance is determined by the length, cross-sectional area, and resistivity of a conductor. Resistivity is, in turn, affected by temperature -so temperature indirectly affects resistance.

These are the only factors that affect resistance. Voltage and current have no direct effect whatsoever on resistance. Current can affect resistance indirectly if it causes the conductor's temperature to increase.

For AC circuits, 'skin effect', due to frequency, causes the current to flow towards the surface of a conductor which acts to reduce the effective cross-sectional area of that conductor. So, frequency can also indirectly affect resistance.

4 Plugging of DC motor is normally executed by?

In case of 1phase

the reverse torque is obtained by reversing the current either in armature or field

You are required to check the p f of an electric load No pf meter is available?

The answer is B.

Because the voltmeter and the ammeter gives us the voltage and current respectively.

and by the multiplication of both we get apparent power and by the Walt meter we get the actual power..

and the p.f. is the ratio of the apparent and actual power..

How much electric power is consumed by a digital computer?

Depending on the specific computer it can be anywhere from as little as a few milliwatts to hundreds of kilowatts. There is no single value, also many modern computers change the amount of power they consume depending on what they are doing at a given time (e.g. lots of calculations in the ALU increases power consumption, entering "sleep mode" due to user inactivity reduces power consumption)

What senses would you use when inspecting any electrical system?

All of them. Your sense of vision allows you to see obvious problems, like badly installed connections. Your sense of touch allows you to determine insulation that is overheating. Your sense of smell allows you to identify charring due to short circuits. Your sense of hearing allows you to hear arcing.

How do you construct other logic gates from nand gate?

NAND gates are universal gates and can be used to construct any of the logic gates (AND, OR, NOT, NOR, XOR, XNOR). The easiest way to figure this out is to use basic Boolean Laws. For instance, to create a NOT gate (A'), tie one of the NAND gate's input to logic high: (A+1)' = A'. To create an AND gate (AxB), use two NANDs in series, with the second one configured as an inverter: (AxB) = ((AxB)')'

Can the power supply provide a negative voltage output?

Yes. Depending on the design, the power supply can provide any voltage desired.

How do you check transistor faulty or not?

the best way is to compeair the data sheet of that transistor to the readings of that transistor. . . . .and u can get the readings of that transistor by using a fungction genrator and a c.r.o

Can you applied the voltage to neutral of the transformer?

The neutral of a transformer is usually grounded. Under this situation, this question is the same as asking whether you can apply a voltage to ground; the answer is yes, but I don't know why you'd want to.

Sometimes transformer neutrals are insulated away from ground. If this is done, then you could inject "backwards" from the neutral up into the transformer. Again, I don't know why you would want to do this, though.

What is Base load power?

Base load power in a home is the energy consumed for day-to-day operation of the home, that is not used in response to the outside weather. Base Load is usually thought of Lights, Appliances, and Hot Water, but by extension it is all plug loads, pool pumps, well pumps, computers, etc. Base load is pretty much everything but the energy used for Heating and Cooling.

Where is the starter motor on 2001 Camero?

Look at the lower rear end of the engine - follow the + battery cable Look at the lower rear end of the engine - follow the + battery cable

Is it possible idenfiying bjt and fet on the circuit?

Identifying BJTs and FETs on the circuitIt is in fact possible to identify transistors in circuits. However, this depends on one's familiarity with the different types of BJT and FET constructions. Since the transistor is a three-terminal device, it is easy to differentiate it from other circuit elements such as resistors, capacitors and inductorswhich are all two-terminal devices. The only exceptions to this may include regulators; which though are not transistors are provided with three terminals.