Electric Mechanic

In simple, synchronous generator supply's both active and reactive power but asynchronous generator(induction generator) supply's only active power and observe reactive power for magnetizing. This type of generators are used in windmills.

I possess fundamental knowledge of electrical and electronic systems, along with deep insight into handling installation, calibration and testing of components, equipment and units. In addition to this, I am great at basic schematic reading and possess exceptional troubleshooting and repairing abilities.

Different losses that occur are

☛ a) Forward conduction losses during conduction of the thyristor

☛ b) Loss due to leakage current during forward and reverse blocking.

☛ c) Power loss at gate or Gate triggering loss.

☛ d) Switching losses at turn-on and turn-off.

Isolators are mainly for switching purpose under normal conditions but they cannot operate in fault conditions .Actually they used for isolating the CBs for maintenance. Whereas CB gets activated under fault conditions according to the fault detected.Bus bar is nothing but a junction where the power is getting distributed for independent loads.

The motor has max load current compare to that of transformer because the motor consumes real power.. and the transformer is only producing the working flux and its not consuming.. hence the load current in the transformer is because of core loss so it is minimum.

I have been actively involved in laying out, building, testing, troubleshooting, repairing and modifying developmental and production electronic components and parts. Additionally, I have been responsible for adjusting, calibrating, aligning and modifying circuitry and components, and recording effects on unit performances. Also, I was responsible for writing technical reports and developing charts and graphs to illustrate assigned systems’ operating characteristics and deviations.

For lighting loads, neutral conductor is must and hence the secondary must be star winding. and this lighting load is always unbalanced in all three phases. To minimize the current unbalance in the primary we use delta winding in the primary. So delta / star transformer is used for lighting loads.

Output voltage is greater than the input voltage or receiving end voltage is greater than the sending end voltage.

We know there are three types of power in Electricals as Active, apparent & reactive. So KVAR is stand for ``Kilo Volt Amps with Reactive component.

I am great with troubleshooting. Since a large part of my work is to handle and fix problems with electronic equipment, this skills comes in handy at a great level.

Near distribution transformers and out going feeders of 11kv and incomming feeder of 33kv and near power transformers in sub-stations.

The effect of armature flu to main flux is called armature reaction. The armature flux may support main flux or opposes main flux.

ACSR means Aluminium conductor steel reinforced, this conductor is used in transmission & distribution.

The goal of asking this type of question is to see if you have a clear understanding of what it takes to work successfully as an electrician. In addition to listing the skills, give examples that illustrate you possess them and apply them in your work.

Generally capacitor gives infinite resistance to dc components(i.e., block the dc components). it allows the ac components to pass through.

When breaker is close at one time by close push button,the anti pumping contactor prevent re close the breaker by close push button after if it already close.

The Feedback in Control System in one in which the output is sampled and proportional signal is fed back to the input for automatic correction of the error ( any change in desired output) for futher processing to get back the desired output.

Reverse Power flow relay are used in generating stations's protection. A generating stations is supposed to fed power to the grid and in case generating units are off,there is no generation in the plant then plant may take power from grid. To stop the flow of power from grid to generator we use reverse power relay.

The role of Feedback in control system is to take the sampled output back to the input and compare output signal with input signal for error ( deviation from the desired result).

Negative Feedback results in the better stability of the system and rejects any disturbance signals and is less sensitive to the parameter variations. Hence in control systems negative feedback is considered.

Advantages:

☛ 1. Fast Switching Characterstics than Mosfet, BJT, IGBT

☛ 2. Low cost

☛ 3. Higher Accurate.