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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
What is the difference between transformer and transwitch unit?
Transwitch unit is a flameproof(FLP) wheel mounted transformer used in underground coal mines
with inbuilt breaker on primary side and a protection chamber with circuit breaker on secondary side for overload and earth leakage provision. It can be moved easily from time to time as working face on mine advances.
"flame proof apparatus" means an apparatus that can withstand without injury any explosion of the inflammable gas that may occur within it and can prevent the transmission of flame such as will ignite the inflammable gas which may be present in the surrounding atmosphere.
Why capacitors are not connected in series in power line?
capacitor's characteristic is charging and discharging. discharged energy will be dropped by load . so it is connected in parallel
What are the uses of transformer?
1.) It can rise down the level of level of Voltage in an AC Circuit.
2.) It can build or decline the estimation of capacitor, an inductor in an AC circuit.
3.) It can accordingly go about as an impedance exchanging gadget.
4.) It can be utilized to keep DC from going from one circuit to the next.
5.) It can seclude two circuits electrically.
The BTU is an Imperial unit of measurement for energy. The watt is the SI unit for power. The BTU and watt measures different quantities, so there are no 'BTUs per kilowatt'!
How do you test a back pressure transducer?
make sure you have vaccum to the transducer, i believe there will be 2 hoses coming from the throttle body. make sure that the metal line that connects to the bottom of the transducer is not clogged with carbon. if you have vaccum and that line is clear, take the hose that goes to the egr vsv solenoid off the transducer and rev the engine up. if it is good you will have vaccum through the transducer, if its bad no vaccum will be there.
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What is the envelope of a signal?
The envelope of a signal is the "apparent" signal seen by tracking successive peak values and pretending that they are connected.
Normally, this question involves amplitude modulation of a radio frequency carrier by an audio frequency signal. The two frequencies involved are very much different - 20 kHz versus 1 mHz, for instance, and this "envelope" effect will be very noticable on an oscilloscope.
If we give more than 4.8 volt to a diode in reverse bias condition it will break down or destroyed.
There are many types of winding on a two speed three phase motor. The number of wires from the motor should have been stated. This is a guess that the motor is a six lead. The diagram is for a six lead out two speed, one winding, single voltage constant horsepower motor.
See sources and related link below
Why keep a voltage transformer secondary open?
it is keep open so as to supply voltage to the load
AnswerThe secondary winding of a transformer is NOT necessarily kept open, unless you want to disconnect its load.
What makes the step down transformer burst?
A major internal short circuit has been known to burst the tank of a transformer; but it can apply to any transformer -not just a 'step-down' type.
What is difference between insulation resistance test and polarization index?
Insulation resistance test:
This test is used to find the insulation resistance of motor for 1 min or 10 min through high voltage insulation tester. By this we can find the insulation level.
Polarization index:
This is the ratio between insulation resistance for 10 min to insulation resistance for 1 min.
For a very simple circuit, using only the solar cells and batteries and possibly a DC/DC converter to keep the voltage at safe levels for the batteries, placing the solar cells in parallel will yield higher current and shorten the charging time of the batteries. In the example you used by placing the five solar cells in parallel you obtain a theoretical maximum current of 220 mAh. This would bring the charging time to 2500/220 or 11.36 hours. This calculation assumes that for the full duration of charging the current is kept constant at 220 mAh.
Leading and lagging power factor?
The terms, 'leading' and 'lagging' refer to what the load current is doing, relative to the supply voltage (Phase difference) -never the other way around. If the current is leading the voltage, then the power factor is 'leading'; if the current is lagging the voltage, then the power factor is 'lagging'.
Convert 600 dc volts into ac volts?
This action takes inverter equipment that is explained in the link below.
The "choke" light comes on to warn you that the choke is malfunctioning. Sucking gas mileage sure sounds like the choke is "on" all the time. That's why the light stays on. choke is wired in series with the oil pressure sending unit,had the exact same problem with my 84, replaced the oil sender which is mounted on the side of the engine block and all is good now
Why a double coil transformer does not work on a pure DC voltage source?
According to Faraday's Law only if there is change in flux linkage of a conductor then current is induced between mutual inductors.
Now DC will induce a constant a constant flux in the transformer core, consequently in the secondary coil. So constant flux cannot induce a current in the secondary.
SUBHRA JYOTI SAHA
S10 blazer reads high voltage?
The s10 uses an alternator and regulator to produce voltage. A high voltage is most likely caused by a faulty voltage regulator.
Force transducers are also commonly recognized as force sensors. A force sensor is described as a transducer that converts an input mechanical force into an electrical output signal.
If the resistance in ohms is higher than the voltage what does that mean?
Voltage is not measured in ohms. It is measured in volts.
A series RC circuit will have a phase shift between 0 and 90 degrees?
If there are only a resistor and a capacitor in the circuit, then the phase shift will indeed be between 0 and 90 degrees. When the resistor and capacitor are in series, the phase shift will be negative when the capacitor is connected to a source voltage and the resistor is the load. The phase shift will be positive when the resistor is connected to the source. The lower the values of R and C, the higher the frequency bandwidth.
With the resistor and capacitor connected in series and the two parts connected to a current source, the phase shift will be negative. At high frequencies, the output voltages is lower, and the circuit appears as a very low impedance. At low frequencies, the circuit looks more like a resistor. Again, the phase shift will be between 0 and 90 degrees.
CommentThe correct term is phase angle, not 'phase shift'. By definition, the phase angle is the angle by which the load current leads or lags the supply voltage. For an RC circuit, the current leads the voltage, so the phase angle is a leading phase angle.
