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प्रश्न
What are the two main systems of wiring commonly used in houses? Which of these systems mentioned by you is better and why?
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उत्तर
The two main systems of wiring are:
(i) the tree system, and
(ii) the ring system.
Out of these systems, the ring system is better. The reason is that this system of wiring is cheaper because a low rating wire can be used for connection of appliances.
संबंधित प्रश्न
Name the quantity whose unit is kilowatt?
An electric bulb is rated 250 W, 230 V. Calculate:
- the energy consumed in one hour
- the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.
A geyser is rated 1500 W, 250 V. This geyer is connected to 250 V mains. Calculate:
(i) the current drawn
(ii) the energy consumed in 50 hours, and
(iii) the cost of energy consumed at Rs. 4.20 per kWh
What is the current in the circuit shown (Fig. )
A potential difference of 6 V is applied across a 3 Ω resistor. What is the current flowinq throuqh the circuit?
An electric filament lamp is connected to a supply of voltage higher than the recommended value. Give reasons, why compared with a normal performance, the lamp emits a brighter light and its life is shortened.
An electric kettle is rated 3kW, 250V. What should be the current capacity of the fuse with it?
A family uses a light bulb of 100W, a fan of 100W, and a heater of 1000W, each for 8 hours a day. If the cost of electricity is Rs. 2 per unit, what is the expenditure to the family per day, on electricity?
1 kWh is equal to:
