why in an electrical lab a bulb connected to supply goes off
slowly when the main supply is switched off?
Answers were Sorted based on User's Feedback
Generally capacitors are connected across power supply for
power factor improvement and as a Harmonic filter. As we
know that capacitor having power storing property so when
power supply switch off all power stored by capacitors
discharge through connected load. That's why bulb goes off
slowly.
Is This Answer Correct ? | 4 Yes | 0 No |
in our electrical system alwys there is capacitance as in
case of capacitor. it is well known, capacitance is the
electric charge storing capacity, actually it store
electric energy in the form of electric field.
when switch is off then this stored energy is discharge so
bulb goes off slowly. but remember this stored energy is
too less.
Is This Answer Correct ? | 1 Yes | 0 No |
What is NDR in HT capacitor panels.
WHAT IS THE DIFFERANCE BETWEEN IP54 AND IP55
why DC is not generated instead of AC?
What is IDMT? What is the principle
what will happen when reverse reactive power occurs in alternators?
11 kv metering is done in my factory.Meter show PF 1.000 but kvarh lag&lead show 24&94 respectively & Avg.PF is .956 .? is what i do for inproove my PF to 1.000
How to know vacuum in vacuum cylinder of breaker in working condition
In the diesel generator wihch type of power we can get it ? Like AC / DC
2 Answers Aditya Birla, Indian Steel, PTPS,
why generation of electricity in low value voltage
Electricty is generated at around 16kV, then step up to 220kV for transmission then steped down to power transformers then DTs and then through the LT n/w it reaches the consumer end. At the consumer end 230V supply is required. So, why is electricity not generated directly at 230V and transmitted?
How to calculate the cable size for particular load
The maximum demand of consumer is 2 kW and his daily energy consumption is 20 units. Its Load Factor is (1) 10.15% (2) 41.6 % (3) 50 % (4) 60%