Fuse and Switch

Queston:::why Switch and Fuse always connect in phase wire of supply ???
Answer:::: Because if we connect both of in neutral wire than it's ( switch or fuse) in open condition... But equipment is live, connect always with phase wire... So if anyone touch the metal part of equipment than Circuit is complete through the user with ground & it's harmful for both user and equipment....
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Important points of Electrical Engineering

                        Important points of Electrical Engineering

* An ideal voltage source will charge an ideal capacitor INSTANTANEOUSLY.
* A series RLC ckt Below resonant frequency is CAPACITIVE.
* A series RLC ckt Above resonant frequency is INDUCTIVE.
* Conductive is the reciprocal of RESISTIVE..
* Transformer action requires a Alternating Magnetic Flux.
* In An oil Fill Transformer oil is provided for both Cooling and Insulation.
* Admittance is the reciprocal of IMPEDANCE.
* An ideal op-amp is a voltage controlled voltage source.
* Negative feedback in an amplifier is reduces gain.
* An Oscillator is a device which generates an alternating voltage.
* Fundamental frequency of the crystal oscillator f= k/t
* 3ϕ synchronous motor is a doubley excited motor. induction motor is singly excited.
* IN KANDO SYSTEM, the Single Phase Supply is Converted into Three Phase System
* In Gas Welding, the gases used are Acetylene and Oxygen
* Field control Above base speed.
* Armature control Blow base speed.
* A Rotating amplifier that can be used as a constant current source is metadyne.
* Always comparator works under open loop systems.
* For ideal op-amp slew rate is infinite. For practical op-amp slew rate is 80 v/µ.
* Time base generators are used in CRO’s, TV and Radar systems.
* The Q of a crystal is of the order of 1000.
* Sinusoidal oscillators work on the principle of Barkhausen Criterion.
* The condition of oscillation and frequency of oscillation depend on the principle known as Barkhausen Criterion.
* Cross over distortion behavior is characteristic of Class-B.
* Class –A power amplifier systems are non linear device.
* Rectifier is a device which converts the sinusoidal AC voltage into pulsating DC.
* In a transformer the thickness of laminations varies from 0.35 mm for a frequency of 50Hz to 0.5 mm for a frequency of 25Hz.
* The All day efficiency is always less than the commercial efficiency of an X’mer.
* The world first 5000 KVA amorphous transformer commissioned in august 2001 in Japan.
* A transformer transforms Voltage and Current.
* Large scale generation of electric power is usually 3-phase at generated voltages of 13.2 kV or somewhat higher.
* Frequency change 50Hz to 100Hz then string efficiency is Unchanged.
* In 132kV transmission line the disc type insulator is used