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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
How much would you choice for amperes at 2750 kw and 11000v for power consumption?
Power = Voltage * Current
Current = Power/Voltage, = 2,750,000/110,000 = 25 amps.
Changing the voltage is done by using a transformer. These voltages are dangerous and the job should be done by an electrician who knows the safety regulations that must be followed in your country.
What is the current flowing through a 200 watt resistor that has a rating of 21 ohms?
The current can't be calculated from the information given in the question.
The power rating of a resistor is the maximum power it can dissipate before it overheats
and its resistance possibly changes permanently. The power rating is not the amount of
power it always dissipates.
So, all we really know about the resistor in the question is that its resistance is 21 ohms.
And all we can say about the current through it is:
Current through the resistor = (voltage between the ends of the resistor) divided by (21).
If each division on the y axis is worth 4 volts then what is the peak voltage?
I assume you are asked to find peak voltage on a graph. If so its simply the number of divisions times four volts for the highest point on the graph.
A: The VA rating is there 6v/a the power fuse to blow is 6watts. 050a fuse
Natural commutation is used in which kind of circuit?
phase controlled RECTIFIER circuit used Natural Commutation......
How do you calculate ampere given 250v AC 60W?
Divide the watts by the voltage to get current (amps). 60W / 250V = about 1/4 Amp.
What is used to provide the proper voltage to a CPU?
A power supply that transforms AC to DC is used to provide the proper voltage to a CPU.
Why the capacitor voltages are unbalance in flying capacitor multilevel inverter?
Hi there
When any intermediary voltage is being synthesised, there is a current path through one or more of the Flying Capacitors, which will cause charging or discharging depending on the overall state of the switches and the load current polarity.
Therefore the inverter control must ensure that the FC voltages are balanced through the proper selection of the switching state combinations.
Maintaining the correct voltage across the FC is the main challenge in ensuring proper operation of the inverter.
If an insulator with a lamp is connected in an electrical circuit and the switch is turned on, the lamp will not light up. Insulators do not allow the flow of electric current, so the circuit will not be completed, and no electricity will reach the lamp to cause it to light up.
According to ISO R286
The tolerance for a 16mm H9 hole is:
16mm +0.000mm
16mm +0.043mm
Why tapping are provided in high voltage winding of transformer?
Tappings are provided in order to make small adjustments to the turns ratio, so that the secondary voltage can be increased or reduced, if required, in order to meet the relevant statutory voltage variation requirements.
Tap changing mechanisms may be 'off-load' or 'on-load' types.
With off-load tap changers, the transformer must be de-energised before the tap-changing mechanism is altered, as the mechanism breaks the connection to the windings as it is changed.
With on-load tap changers, the mechanism is adjusted (usually automatically, when required) with the transformer energised and supplying load. The mechanism is installed on the high-voltage side of the transformer (regardless of whether it is a step up or step down transformer) because the high-voltage windings carry the lower current, allowing smaller contacts to be used. On-load tap changers use a 'make-before-break' arrangement, so that the windings are never disconnected when the mechanism changes its tap setting.
What is the minimum acceptable reading for magger test for 480v motor?
if check voltage is 2000v then acceptable range is 400
Can you improve voltage level in the range of millivolt into a 15volt?
A voltage amplifier (high input and output impedances) with a gain
of 83.5 dB will amplify a signal of 1 millivolt to an output of 15 volts.
How much voltage for 132kv UG cable high voltage testing?
it depends on the specification,,,,,,in saudi arabia as per sec standards 152kv voltage should be applied for a period of one hour.
The resistance of a 4 ohm resistor and a 12 ohm reisistor connected in series is?
16 ohm, R1 + R2+R3 = RT in series.
Why arcing horns are used on primary side of transformer?
It's common to put arcing horns on the HV side of a power transformer to short out voltage spikes arriving from lightning strikes along the line.
How can you calculate the amount of charge represented by 2 million protons?
One coulomb is about 6.2x1018 elementary charges. Two million protons, 2x106, is a very, very small percentage of this. The amount of charge represented by 2 million protons is about 3.2x10-13 coulombs.
What law is used to find the polarity of resistor when two voltage source are connected?
Hi!
Well, it depends what voltage is "pushing" harder on the resistor. If you are ONLY dealing with 2 voltage sources and a single resistor, then the voltage source with the higher potential (or voltage) will dictate what polarity the resistor is.
Cheers!
What 2 voltages is a short circuit made of?
Circuits are not made of voltages, they are made of loops. A short circuit exists when a connection is added that is not supposed to be part of the intended circuit as designed. This added connection produces extra loops in the circuit that typically prevent current from reaching parts of the circuit where it is needed and can cause excessive current to flow in other parts of the circuit, resulting in damage to the components in the circuit.
