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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
For a circuit that is operating normally, it will continue to operate normally. However, by replacing the correct fuse with one of a higher rating, you are removing the circuit's overcurrent protection and, in the event of a fault, the conductors and load may become damaged. Incidentally, the symbol for ampere is 'A', not 'a'.
Most electric plants use what to turn a generator?
Most electric plants use steam to turn a turbine which then turns a generator.
What is the best material of the core of a transformer?
The core is responsible for the hysteresis losses in a transformer. These are the losses associated with the ease, or otherwise, by which the core is able to become magnetised in one direction, demagnetise and, then, remagnetise in the opposite direction. These days, the type of material used (variations on silicon steel) are about as efficient as possible.
What is the current capacity of 95 square cable 1.1kv?
Continouous safe current carrying capacity for following conditions for a single cablea) Ground tempreture.b) Thermal resistivity of soil 120 C Cm /wc) Depth of laying in 1070 mm.
25 sq mm&95 sq mm p v c insulated cable 1.1 k v
Describe the response of a capacitor when connected to and then disconnected from a battery?
A capacitor that is suddenly connected to a battery will charge to the battery voltage. The time to do this is dependent on the current capacity of the battery and wiring, and the capacitance of the capacitor. This represents an instantaneous short circuit, which lasts for a (usually) very short time - but damage could be done if there was no resistance.
A charged capacitor that is suddenly disconnected from a battery will hold that voltage. The length of time it will hold is dependent on how much leakage current there is.
Bare cable is simply a conductor without a coating, sheating, or covering. It is just bare wire.
No, your amp draw will not be reduced. It will actually be slightly higher because the transformer will not be 100% efficient. Contact TEMCo Phase Converters at (800) 613-2290 if you have any more questions.
What does mean application of Kalina cycle in advanced technologies in power generation?
The Kalina cycle is a thermodynamic process for converting thermal energy into usable mechanical power.
It uses a solution of 2 fluids with different boiling points for its working fluid. Since the solution boils over a range of temperatures as in distillation, more of the heat can be extracted from the source than with a pure working fluid. The same applies on the exhaust (condensing) end.
HOW Does a clamp-on ammeter measures current by capacitance?
A clamp-on ammeter does not measure current by capacitance. It forms a current transformer that operates by inductance. The clamp-on part is the magnetic core of the transformer. There is another winding inside that is coupled by the core to the line that is being measured. This second winding is shorted and the device reads the current through that winding. The current is proportional to turns ratio.
How can you lay earthing strip on cable tray?
no use laying an earthing strip in a cable tray better tap both the ends of the earthing wire to the trunking,it will save your wire also,or lay out a cable in the other trunking where you have low voltage wire running in.
Power factor correction capacitors?
Yes, they exist. Capacitors are often used to change a low power factor (such as 0.5) to a higher power factor near unity (1). In some instances, this will lower fees and costs to utilities. In homes, this is not really necessary as most devices used in homes are near unity power factor, or tend to be minor/sporadic loads (such as a washing machine).
What is the unit for measuring the rate of electron flow in a circuit?
Electron flow is known as current.
SI unit is Ampere
What is a line frequency power diode?
line Frequency diode have very low forward bias drops but their recovery characteristic(time) is very long. Their softness factor is low.
If a dc motor is operated in 4 quadrants what is the mode dof operation in each quadrant?
The 4 Quadrants are;
1 FORWARD DRIVE
2 REVERSE BRAKING
3 FORWARD BRAKING
4 REVERSE DRIVE
What is a triple point line in thermodynamics?
It is the state at which all the three phases i.e.,solid phase,liquid phase and vapor phase are in equilibrium.
an interlocking device
In order for a circuit to function correctly the electricity must do what?
It must flow through the conductors.
Current I=V0/R as per OHMs law: V=IR
Charge on capacitor Q=CV=It
When capacitive reactance equals inductive reactance the resulting condition is called?
It is known as resonance and there is maximum voltage drop at this point.
What is the lumen of 23 watt CFL?
A 23 watt cfl will give off roughly 1600 lumens. However that is only within a few inches of the bulb.
power factor=real power/apparent power...
real power in the sense the capacity of the circuit for performing a work in a particular time..for example the work done by a motor circuit is so and so...real power is what we consume from them...
apparent power if the product of the current thro' the circuit and the voltage...it will be always greater than the real power..
if the POWER FACTOR IS 1.0(100%),THEN THE AC POWER IN THE CIRCUIT WILL BE EQUIVALENT TO THE POWER OFFERED BY A DC CIRCUIT....
As a motor refers to the electric verison (petrol is an engine) the
first commutator-type direct current electric motor capable of turning machinery was invented by the British scientist William Sturgeon in 1832
