Sparking occur when a load is switched off because the
circuit has high –
a.) Inductance
b.) Capacitance
c.) Resistance
d.) None
- 3 Answers
- 11602 Views
- Ecil, I also Faced
- E-Mail Answers
Answer Posted / 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.
| Is This Answer Correct ? | 3 Yes | 3 No |
Post New Answer View All Answers
whati s the sludge current in ups
what is the circutor?why we use it ?
what are the industrail measures to over ferranti effect? how would the ferranti effect the power system if those remedial mearsure arent taken? how often does this effect occurs in real power system?
what is the pulse and audio frequency transformer? what is different between induction regulators and tap changing transformer?
What is difference between unity power factor wattmeter and upper power factor wattmeter? In short circuit test of transformer the wattmeter used is unity power factor type or upper power factor type wattmeter?
Single line digram for 11 kV to distribution use go,la and do
Why star delta starter is preferred with induction motor?
what is errection pcbs?
What is the Minimum winding resistance of motors ( small & big)? referance range
a 230v transformer with step down ratio 19:1.it has 2000turns on primary and rated 25va calculate max primary current no of secondary turns volts/turn
Why different Pressure switch used in marine boiler water circulation system
how point on wave controller works.
why does connected a indutor with mnsformeretering core of current transformer ?
What are the three major categories of error?
why the colour of insultor stack , petticoat is brown. Is it has some technical reason.
