Advertisements
Advertisements
प्रश्न
Answer the following question:
What is overloading? When does it occur? How can overloading be avoided?
उत्तर
- When the current in the circuit exceeds, the load exceeds the specified limit and overloading occurs.
- If many electrical appliances of high power ratings such as geyser, iron, air conditioner, etc, are switched on simultaneously overloading may occur.
- The effects of overloading can be avoided by connecting a fuse in series with the circuit.
APPEARS IN
संबंधित प्रश्न
What happens to the resistance of the circuit during a short circuit?
What happens to the flow of electric current during a short circuit?
What is overloading?
How can the effects of overloading be avoided?
Name safety measures commonly used in electric circuits and appliances.
An electric oven of 2 kW is operated in a domestic electric circuit (220 V) that has a current rating of 5 A. What result do you expect? Explain.
What precaution should be taken to avoid the overloading of domestic electric circuits?
At the time of short circuit, the current in the circuit ______.
What is the usual capacity of an electric fuse used in the power circuit, of a small house?
List the colours of the three wires in the cable connected to the plug of an electric iron.
What is the electric potential of the wire in a mains supply cable?
In which wire in a A.C. housing circuit is the switch introduced to operate the lights?
What is the usually colour of the insulation of :
(a) live wire
(b) neutral wire
(c) earth wire?
Fill in the following blank with suitable words:
A fuse should always be places in the ........... wire of a mains circuit.
Write the function of the voltmeter in an electric circuit.
A fuse should always be placed in the ____________.
Earth wire carries ____________.
Overloading is due to
The most important safety method used for protecting home appliances from short-circuiting or overloading is ____________.
Why is it necessary to earth metallic appliances?
