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 / nm1
Arcing occurs due to increase in potential between the two contacts. Potential increases because of sudden opening of breaker leads to sudden reduction in current to zero. This means rate of change of flux is highest in inductive circuit and producing high potential between the contacts. Potential also increases due to release of conductance of cables.
| Is This Answer Correct ? | 0 Yes | 0 No |
Answer / sanjay yadav
I give a simple example,suppose mujhe ek big water tank mein pani bharna hai.big water tank ko bharne ke liye mote pipe ki jaroorat hogi.pani uper tank tak le jane ke liye ek electric motor ya engine ki jaroorat hogi.jab motor on hoga tab tank bharna suru ho jayega.chalte huye motor me agar hamne tank ko bharne ke pipe ko suddenly nikaal diya jaaye our dusre paani ke tank se jod dia jaaye ,toh pahle tank me paani ko bharne walla pipe me (between tank to motor)Jo pani hoga back pressure me vaapas aayega our ground per spread ho jayega.in this example water tank as a load,every load including coils also have its own resistance.tank size is as a resistance and storage water is as current,pipe is as conductor,flowing water in pipe is as current pipe disconnection point is as switch and the motor fan who lift the water work as a emf and the motor is as supply generator.I think u all better understood.mai reason is current.
| Is This Answer Correct ? | 0 Yes | 1 No |
Answer / anu
guess:In this case, the resistance becomes zero Ω as well,
increasing total current to a value of infinity(i=v/r).no
real voltage source could arbitrarily supply a huge
overload current and maintain steady voltage at the same
time.this huge current results in the generation of heat
and sparks
| Is This Answer Correct ? | 3 Yes | 5 No |
What is a step-recovery diode and why is it so called ?
Explain the difference between JK Flip Flop and Master slave JK Flip flop.
Hi, I am called for interview for UIIC's Administrative officer(IT, Hardware, Networking), What are the questions generally asked in IT administrative officer job interviews. Please help me ASAP, my interview is on 24th july 09.
what is quality factor
hi i am electronics & telecomm engg & appling 4 the AAI jr executive (electronics/ATC) written test. pls forward me the syllabus & old question papers.I will be very much thankful to you. pis inform to mpnisi@gmail.com
0 Answers AAI Airports Authority Of India,
what do i really want to do in life
WHAT IS RESISTOR?
Dear All, How can I make 5VDC with 500mA current rating from our 230VAC. Can anybody help me with different answers? I am Ansari-9820016777.
Define voltage controller?
Explain how to manufacture the cmos inverter?
Explain the effect of if in radio receiver?
Explain why is an excess-3 code called an unweighted code?
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)