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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
Can you directly connect 12 V DC 10 A relay to 230 V AC Supply main line?
Yes you can .connect the 230 volt capacitor series with the relay coil.
AnswerIf you are referring to the operating coil, then the answer is of course not, as you will be subjecting the coil to nearly 20 times its rated voltage! If you are referring to the contacts, then you need to check the nameplate data for the relay to find out what voltage the contacts are designed to operate at.
Can you use this switch for three phase incoming and single phase outgoing?
No A intermediate switch can not be used to change three phase to single phase.
What is the hp on a 91 Chevy S10 pick-up 2.2 motor?
92 hp for the 2.5 .... not sure where you got 2.2 from , but , its a 2.5 151 cid motor
Why is the R-C oscillator also called a phase shift oscillator?
The R-C oscillator is also called a phase shift oscillator because the R-C filter creates a phase shift from input to output. The feedback portion of the oscillator (an amplifier) then serves to pump energy back into the filter.
ohms.... the symbol looks like a cattle brand, kinda
What is the cause of the compressor if not trip to its overload?
What is the cause of a compressor if not trip to its overload
Does transformer posses current changing property?
A: Absolutely while the voltage can be changed the current is limited by the design or kva
What happen when voltage across the pn junction increases?
If the potential across the junction is high enough, then it could cause it to conduct. This is with all diodes and is the forward voltage. If it is not high enough, it will just sit there and not conduct.
What is the effect of increasing number of poles on the speed of an induction motor?
As the number of poles (P) increases, the speed of an induction motor (N) decreases.
As seen by the formula: N=(120*f)/P
Why do we connect a transistor to a DC motor?
Transistors are not normally connected to dc motors, but it is possible to use transistors in a speed-control mechanism for a motor.
What will happen when shunt field is kept open when generator is running in a dc shunt generator?
n=emf/flux according to this formula field open means flux
will be zero.flux zero means speed will be infinity,but we
know that no machine can't reach infinite speed so that
therotically ok but practically starting speed will
increase then it will reduced zero.
What happens when the magnet stops moving in a DC motor?
Nothing. The motor is not doing work. A voltage needs to be switched between the coils for it to go.
What is the Unit of capacitance in ohm and meter?
Capacitance is measured in Farads. "The unit... in ohm and meter" does not make sense.
What is the harmonic factor in a power system?
Two factors reduce the power used by a piece of equipment compared to the volt-amps drawn from the supply: power factor and harmonic factor. Both factors increase the power transmission losses incurred in supplying a given amount of power.
The power factor is less than 1 when voltage and current are out of phase with each other.
When they are in phase the power equals the volt-amps except for a nonlinear load with a current that is not proportional to voltage. This generates harmonics in the current and the effect is that the power is less than the volt-amps, by an amount equal to the harmonic factor.
How do you connect Two DC generators together to double the output voltage?
You would connect them in series to double the output voltage.
An example of a voltage source is a?
battery
A generator
electrical outlet
solar panel
wind turbine
or any source a voltage can be obtained.
In a transformer primary or secondary will inside winding?
A step-down transformer's primary is high voltage and secondary is low voltage, based on voltage configuration or load we select which winding we do fast.
In air-cooled Transformers output voltage is high and load current is low. So in air cooled low voltage winding in side and high voltage winding in out side of the coil . So we can reduce high voltage short problems and we can easily provide coil insulation . reduce short problem. It is cooled in oil.
In step-down transformers we can do high voltage inside of the coil and low voltage and high current of the coil is outside. Because we can better coled in outer side . and reduced to temp problems.
AnswerThe terms 'primary' and 'secondary' do not relate to a transformer's voltages, but to how its windings are connected. The primary winding is connected to the supply and the secondary winding is connected to the load. So, for a step-up transformer, the secondary winding is the higher-voltage winding while, for a step-down transformer, the secondary winding is the lower-voltage winding.Your question, therefore, should ask whether the higher- or the lower-voltage winding is the 'inside' winding (i.e. the winding closest to the core), and the answer is that it is the lower-voltage windings are innermost and the higher-voltage windings that are outermost.
What is the testing procedure for an earth leakage circuit breaker?
You can test this breaker by clamping it onto the earth cable. This will provide you with the measurements that you need.
What is the unit of electric flux?
The unit of electric flux is Volt-meter or Newton-meter^2 Coulomb^-1.
