What is the differance between shutdown and trip?
Latest Answer: Purposely making the transformer stop(down) is the shutdown,for the purpose of maitainance etc.Unevenly stop the transformer due to any faults; is the Trip. ...
Is it possible to generate electrostatic power? If yes, how?
In residential building electrical installation has been completed. How will you test this new electrical installation of building?
What is vector group of transformer? Why is it required?
For 63A load we can use 25/35sqmm cable. For same rating fuse conductor size is too low. How is it possible?(Its not depends on meterial, because single strand for above cable size is enough for fuse)
Latest Answer: Generally Fuse is used for short circuit protection. That means it should be higher(normally 2 to 3 times of rated current depending on design) than other installation in a perticular circuit. ...
Why neutral point is not required in high transmission line?
Latest Answer: It will be simply wastage of money to use a neutral wire in transmission line, however technically it will not give any adverse effect, but as the line is not directly fed to a single phase consumer / any consumer then it will be wastage of money to carry ...
Wattmeter has two coils in it-the current coil & pressure coil, why is the pressure coil so named? How is the power being measured by the Wattmeter?
Latest Answer: Current coil means it measure current of circuit & pressure coil means it measure voltage, when current coil is connected series, pressure coil connected parallel in one circuit ,as P=V*I*cosØ,
So we have V, I, & Ø=[1/tan(V/I)],
Now the power is being ...
What is mean by reactive power? How it is generated?
Latest Answer: We know reactance (hypothetical resistance) which reduce the supply voltage by opposite flowing induced emf. This power loss due to reactance is known as reactive power. This power is not useful power. It is a waste. However it is useful in determining ...
In DC only resistive component exists where as in AC system resistive, capacitive & inductive component exists. Why its so?
Latest Answer: Good question. to answer this question first of all we need to study the terms resistance, inductance, capacitance on atom level. Generally what we know is Resistance: which opposes the flow of electrons.Inductance: which opposes rate of change of current.Capacitance: ...
What is mean by form factor of the AC current?
Latest Answer: It is the ratio of rms value to average value of an alternating quantity. ...
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