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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
Voltage is "electrical pressure", so to speak, or energy per charge. Volts is joules per coulomb.
What do you mesure the answer of Ohm's law in?
Ohm's law can be used to find the current, voltage or resistance in a electrical circuit.
The formula is V=IR
where 'V' is the Voltage measured in Volts (V),
'I' is the current measured in Amperes (A)
And 'R' is the resistance, measured in Ohms (Ω)
What liquid is inside a filament transformer?
The predominate liquid used inside a filament transformer is mercury. Mercury is used to keep the transformer cool when under heavy use. Mercury is a cheap and long lasting liquid.
This sounds like highschool physics homework. The answer is simple ohms law and algebra. The short answer is Voltage = Current x Resistance. If you know two things you can find the third.
To be honest, this is a simple question and your book or Wikipedia can tell you. Just solve for the unknown.
Which cable is suitable for 12kW?
It depends on the voltage and on whether it's single-phase or three-phase.
When you require dc source it is preferable to use a dc power supply instead of a battery why?
It depends on where the power source is needed. In portable equipment for starting engines or portable equipment like cordless saws, drills, or lights a battery is the preferred method of power. In indoor stationary charging equipment for portable phones for example a continuous supply of AC power being converted to DC is more convenient than have batteries around the home that have to be charged when running low on voltage.
The bleeding phase refers to the part of the menstrual cycle where the uterine lining is shed, resulting in menstrual bleeding. This phase typically lasts between 3 to 7 days and marks the beginning of a new cycle. It occurs after the luteal phase, which follows ovulation, and is triggered by a drop in hormone levels, particularly progesterone, when pregnancy does not occur. The bleeding phase is essential for reproductive health, as it prepares the body for a potential new pregnancy.
Is there another season of monochrome factor?
There is not a second season of monochrome factor at the moment, but I'm hoping that they will make a new one, and soon :D
What is the function of a capacitor in the half wave rectification?
to smooth the output of the half-wave rectifier from 1/2 an AC cycle per period to a constant voltage.
Give the definition of output offset voltage of Op-Amp?
The output voltage of a opamp when the input of inverting and non inverting terminals are grounded
What is the virtual value of ac whose peak value is 707V?
virtual value=peak value/root 2
=707/1.414
=500
What is TUF for half wave rectifier?
It indicate how well the input transformer is being utilized.
It is given by the ratio of DC output power to the AC power rating of Transformer.
Both are 1.5A adjustable voltage regulators. The LM317 outputs a positive (with respect to ground) voltage, and the LM337 outputs a negative voltage.
Is 10 kva supply to 3 phase load is equal to 10kva supply to single phase load?
Yes of course!!
10 kva electrical power is 10 kva electrical power either it would be three phase or single phase. But other factors i.e. current, voltage changes accordingly.
Actually this question is quit confusable. Because in 3phase system, if each phase gives 10kva power (single phase power = 10 kva) then 3 phase power will be 10 X 3 = 30 Kva
If we go leteratualy towasrds the question, then the asnwer will be - No. becasue 10 kva supply to 3 phase load will be 3phase supply(i.e440V) & 10kva supply to single phase load will be single supply (i.e 250V).
Use of symmetrical component in fault studies?
Symmetrical components are used to model faults on unbalanced high-voltage transmission/distribution systems, in order to predict the magnitude of fault currents resulting from various types of short-circuit fault, so that appropriate settings can then be applied to protective systems.
The basic principle behind the method of symmetrical components is that any unbalanced three-phase phasor diagram can be represented by three balanced phasor diagrams, called 'symmetrical components', termed:
- positive phase-sequence diagram (displaced by 120o)
- negative phase-sequence diagram (displaced by 120o)
- zero phase-sequence diagram (in phase)
This enables the electrical system to be represented by three sets of balanced phasor diagrams, rather than by a (terribly complicated!) unbalanced phasor diagram. This, in turn, allows the line fault impedances to be calculated relatively simply -these are represented by Z1, Z2, and Z0 -where Z0 represents an impedance path associated with earth faults.
Further explanation of this topic is well beyond the scope of this answer, and an appropriate textbook should be consulted.
What are application of integral in electrical engineering?
All sorts of applications in engineeringand one common application comes in Fourier analysis of repetitive waveforms into a fundamental and a set of harmonics. Integrals are also fundamental to the theory of orthogonal functions, which are used extensively in the solutions of the differential equations which crop up frequently is all branches of electrical engineering.
How do you get rid of faecal loading?
To alleviate faecal loading, it's essential to increase fluid intake and consume a high-fiber diet, which includes fruits, vegetables, and whole grains. Regular physical activity can also stimulate bowel movements. In some cases, over-the-counter laxatives or stool softeners may be necessary, but it's advisable to consult a healthcare professional before using them. If symptoms persist, seeking medical advice is crucial to address any underlying issues.
If a 12V device is dissipating 50W how much load resistance does the device represent?
P = V x I
I = 50 / 12
I = 4.17
R = 50 / (4.17*4.17)
= ~2.88
Block digram of star delta starter?
Answers does not have the ability to reproduce diagrams on the answer page.
derating
How is magnetic reluctance measured?
Magnetic reluctance is a concept used in the analysis of magnetic circuits. The term was coined in May 1888. There are several methods to determine the magnetic characteristics.
What emf method is least used?
The least commonly used electromagnetic field (EMF) method is likely the magnetotelluric (MT) method, which measures the Earth's natural electromagnetic fields to infer subsurface resistivity. While effective for deep geological studies, its complexity, cost, and the requirement for specialized equipment limit its widespread application compared to other methods like ground penetrating radar (GPR) or electromagnetic induction. Consequently, MT is often reserved for specific research projects rather than routine surveys.
