Interested to Buy Any Domain ? << Click Here >> for more details...
1)Why electric shock is feel ?? n in a Electric Train why
we didnt feel that ?
2)What is the reason for transformer Noise ??
3)What is relation b/w Transmission Lines & Communication
Lines ?
4)Which material is used for making Transformer oil & How u
measure its dielectric strength & Name the test ?
- 14 Answers
- 27786 Views
- NTPC, Tata Power, I also Faced
- E-Mail Answers
Answer Posted / masoom raza
1)when electrical current passes through our body
then it interacts with electrical impulse in our
body due to which our muscles contracts and expand (depending on type of current i.e ac or dc ,in dc
it contracts while ac in ac it contracts and expands
but very high speed depends on frequency),its called
shock.
in case of electrical train, it is grounded through wheel
so current follows that path(train body to wheel)
rather through our body. so didn't feel shock.
2)transformer noise is due magnetostriction (expansion
and contraction of core in high frequency as in ac
polarity changes rapidly ,i.e it has frequency).
3) transmission line carries high power, have no
insulation ,low frequency operation
communication line carries low power signal,have
insulation
,high frequency operation.
4) transformer oil is usually made from petroleum as it having high Di-electrical strength and high temperature rating and it is less reactive then normal oil.
sorry friend i don't know exactly name of test.
its probably dielectrical strength test.
| Is This Answer Correct ? | 3 Yes | 0 No |
Post New Answer View All Answers
what is meant by surge? what we called for high currents?
what is vtg limit of earth and neutral at transformer side?
with help of neat sketch explain principle of TIG welding process
If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.
Mention the methods for starting an induction motor?
How to perform a DC resistance test In Alternator and their proceduces?
As we use capacitor bank in 3ph ckt to improve PF, can we use capacitor in single ph domestric use, in house we have Fan,Mixer,electric cooker,iron,tube choke they also lag the system,because it is inductive load. if it is possible to improve PF of single ph system-- if yes- type of capacitor to be used,connection diagram, working in detail. if no-- list it.
According to underground cables a) stress b/w sheath & conductor is high b) inrush of core & conductor
how ceiling fan worked?
why single CT used in DOL starter power circuit?
What happen in ups if phase reverse?
Please send 110 kv sb station full single line drawing(sld)
in shunt clippers why a resistor is used in sereis with the input
Why are the cores of large transformers built up of circular transactions ?
How many types of colling system it trformers?
