Electrical Engineering

Master Unit Sub-station

An inductor resists a change in current. It does this by converting the current into a magnetic field. If the current then changes, the collapsing or increasing magnetic field will buck the attempted change through electromagnetic energy conversion.

switchgear is electrical equipment regulats from electricity

In electronics, a center tap is a connection made to a point half way along a winding of a transformer or inductor, or along the element of a resistor or a potentiometer. ..

Because the tranformer calculation for ratings is calculated with the formfactor which is 1.11 constant.

Regards

Mithin kudva

German physict Georg Ohm

it is also same as earthing lugs,there is no differenence earthing lugs ang lugs earthings.

it is a unit in a BTS i.e. base transreciever system..these bts are installed with towers that are used for mobile communication. The piu consists of a power plant and battery bank. power plant has rectifier to convert ac to dc and battery back up is used in case of power failure.

Superposition theorem is not applicable on non-linear networks.

A resistance that doesn't change.

It is used to reduce the hormonics in the system generated by Electronic components like VFDs etc. generaly we can consider input side as well as out side of the VFD. if u see the IEC1000-1/2/3 we have to consider 3% or 5% choke/filter at i/p and o/p of the vfds.

if u have still more doubts

contact :nsn.rajs@gmail.com

A rectifier allows current to flow only in one direction. In a half-wave rectifier circuit, an input wave which oscillates between positive and negative, will 'pass through' the positive portion of the wave, and when the input is negative will output zero. A full-wave rectifier circuit, is commonly configured with 4 rectifier diodes, which allow a positive wave to output when the input wave is negative.

A 3 heat switch enables two elements for example of 1kw, to give out 100% power, 50% power and finally 25%.

That equates to two 1kw elements in parallel. (100%)

One 1kw element on power only. (50%)

And finally both 1kw elements in series. (25%)

48*2.2 = 105.6VA

A: There is no X times current for a zener to regulate. The real limit is the zener power dissipation that determine the total current since the zener to regulate must carry its own breakdown current in addition to the load current when the load is absent . IF this is not taken in consideration the zener will surely burn out

Yes, a certain amount of delay in the input would give rise to an output that equals to delaying the output signal by the same amount directly

Power lines

diode

The causes of the electrical explosions is if the voltage of the electricity come down below 110 volts or become higher than 120 volts, it will explodes so you have to use an transformer into it.

Electrolytic caps are polorized and are used for filtering and will charge up to a DC value as in power supplies.

Servo Motors are definitely very useful in the world of robotics. They allow us torque & precise movements. They are great 'actuators' for imitating things like fingers, hand or leg movements.

overload model no Ke-FKR4(D)

All a.c. voltages are expressed in root-mean-square (r.m.s.) values, unless otherwise stipulated. So 12 V is an r.m.s value which, for a sinusoidal waveform, has an amplitude, or peak value, of 1.414 x 12 = 16.97 V. So its peak-to-peak value will be twice this amount -i.e. 33.94 V.

Q = 3 Vph Iph sin(phase angle) = 31/2 Vline Iline sin(phase angle)

You could cut yourself or otherwise injure yourself. These are hard to overcome within the activity itself, but it's possible to reduce the risk of injury with more caution.