Advertisements
Advertisements
प्रश्न
What is meant by ‘MCB’? Which part of the domestic electric circuit does it replace?
Advertisements
उत्तर
‘MCB’ stands for ‘miniature circuit breaker’. This is a device that automatically ‘switches off the mains supply if the current drawn Exceeds the prescribed upper safe limit. It can be ‘reset’ with the help of a flip-over switch. It protects the entire circuit and appliances against short circuiting, etc.
संबंधित प्रश्न
A switch is not touched with wet hands while putting it on or off. Give a reason for your answer.
A switch must be connected in the ______.
What is a switch? State its function in an electric circuit.
What are ‘dual switches’? Mention their one main use.
Why should switches always be connected to the live wire? Give one precaution that should be taken while handling switches.
Would the bulb glow after completing the circuit shown in Figure if instead of a safety pin we use an eraser?
Would the bulb glow in the circuit shown in Figure?
In which position is the key placed in a circuit?
You are provided with a bulb, a cell, a switch and some connecting wires. Draw a diagram to show the connections between them to make the bulb glow.
Name the wire to which a switch is connected.
