Question { 4090 }

what is the principle of tubelight ??? what is the function
of starter and choke ???

Answer

tubelight works on the principle of electric discharge.
starter act as a switch and choke acts as an inductor. when
tubelight is switched on the electricity flows through
starter which is actually a capacitor. sooner the dielectric
strength decreases and it gets shorted hence switching of
the supply through inductor. during this time the choke
stores energy which is appeared across the electrodes of the
tubelight and hence helps in ionsation of gas and electric
discharge. starter is connected in parallel to tubelight and
choke is in series

Question { 2931 }

hi, is there a difference in choosing bus bar for DC or AC
,,if there can anyone help me about.
thanks

Answer

the dimension, type and material of the bus bar conductor
depends upon the capacity of the conductor or the current
intake.
long story short whether it is a dc or ac busbar it is same
for the same capacity

Question { ABC, 9911 }

Which is the best between SCADA & PLCC & Why ?

Answer

well first of all you should be clear dat wat is d full of
PLCC & SCADA.
PLCC stands for POWER LINE CARRIER COMMUNICATION whereas
SCADA stands for SUPERVISORY CONTROL AND DATA ACQUISITION.
Both PLCC and SCADA are used for the data acquisition using
RTU(Remote Terminal Unit). But you see SCADA provides and
additional function, it can control the load dispatch of the
system or say power system management hence required in
SLDC's(State Load Dispatch Center) whereas PLCC is used in
every grid substation, switching substation, generating
substation etc. only for communication purpose and data
acquisition. Installation of SCADA system is way costlier
than PLCC.Both of them serves different purposes.

Question { MPSEB, 7884 }

What is the high tension lines voltage and low tension lines voltage?33 kv is high tension line or low tension.

Answer

According to the Indian Electricity Act 1956, the different
voltage levels are categorized. volatge upto 250V and below
comes under LV 250V to 650V comes under MV and 650V to 33KV
comes under HT

Question { 3143 }

Give me clear explanation.What is the Different Between Load break switch and Vacuum circuit breaker

Answer

the basic difference between the load break and vacuum
circuit breaker is the arc quenching media or mechanism.
In load break switch the arc is quenched by lengthening
using arcing horns, whereas in vacuum circuit breaker arc is
quenched by the removal of the metals vapors from the media
which are created by the separation of the contact.

Question { 2675 }

what is gapless metal oxide techniques?

Answer

The gapless metal oxide technique is used to achieve
non-linear characteristic.
In this technique Zinc Oxide grains with controlled
impurities of Bismuth Oxide and Antimony Oxide are
introduced to the resistor.
The micro-structure hence formed have execellent non linear
characteristic.
This technique is used in the formation of Lightening/Surge
Arrestor which are used in the protection.

Question { 3547 }

what effect will 10 milliampere current cause to human body
???

Answer

Even 10 mA current can cause a lot harm to human body. It can cause cramps, loosening of hands, and can cause some pain when allowed for shorter period, and can cause much harm if persist for longer duration of time.