Answer / mayur devadiga

A) Inductance

Answer / badshah hussain rizvi

yes its answer is inductance because inductance opposes any
change in current.so when load switched off some current
still flows which leaks due to incomplete path.

Answer / kj

d.) None

Sparking occurs because a flow of current is broken. When
the 2 contacts are very close the air is ionized and will
conduct. As the contacts open further the arc cools and the
air loses the ability to conduct.

With AC it may be seen that sometimes a small switch sparks
and sometimes it does not. It will depend on the voltage at
the time of opening. At the peak of the sine wave it will
be a big spark at the zero line no spark.

for same rating of a transformer and induction motor which one will have higher magnetising current flowing?

2 Answers  

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I have two AC generators, the first rated 2680KVA for 380V/4345A/pf:0.7 and the second rated 3461KVA for 5500V/363A/pf:0.8. I want to parallel the two generator to a bus. The second generator passes through a transformer to down the voltage to 380V and a part of its power goes to another bus so that it's only a part of the total power of the second generator taht goes to the considered bus. I have two Basler DECS100 AVR regulator. How can I make the synchronization ? What others equipments must have ?

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3 Answers  

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1 Answers  

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