Sparking occur when a load is switched off because the
circuit has high –
a.) Inductance
b.) Capacitance
c.) Resistance
d.) None
Answers were Sorted based on User's Feedback
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.
| Is This Answer Correct ? | 23 Yes | 5 No |
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 |
what will happen if delta - star , 400V to 6.6KV step up transformer neutral is not grounded, Neutral is not used but transformer is provided with neutral.
What is given by the definition in BIL IMP/PF = 950/395 kV. This was found in a name plate of a power transformer.
what is gas turbine intercooling ?
when a pure dc signal is sent through a moving iron meter, what will it read?? dc or rms?? when a variable dc signal is sent through a moving iron meter, what will it read?? dc or rms??
How much amperes needed for starting of 4HP motor?
can we run 3 phase induction motor under 2 phase supply
ELECtrical
2 Answers Bahwan Engineering, Bhel, Electrosteel, NBCC, Qatar Airlines,
suppose there is afault in transmission line connected to a generating station, then what r the adjustments u will take to without loss of synchronism?????
why there is a humming noise in transformer
what is diode? and what it is used for ?
One 200 V, 100 W bulb is connected in series with primary of a 200 V, 10 kVA transformer. If its secondary is kept open circuited, then the bulb would have (1) Full brightness (2) Poor brightness (3) A little less than full brightness (4) More than full brightness...explain
what is the main parts of DG? how it is working?
Civil Engineering (5086)
Mechanical Engineering (4456)
Electrical Engineering (16639)
Electronics Communications (3918)
Chemical Engineering (1095)
Aeronautical Engineering (239)
Bio Engineering (96)
Metallurgy (361)
Industrial Engineering (259)
Instrumentation (3014)
Automobile Engineering (332)
Mechatronics Engineering (97)
Marine Engineering (124)
Power Plant Engineering (172)
Textile Engineering (575)
Production Engineering (25)
Satellite Systems Engineering (106)
Engineering AllOther (1379)