Question

briefly explain use of MCB.

Answer 1

→MCB refers to Miniature Circuit Breakers.

→It is an automatic circuit breaker which prevents electric hazards.

→They automatically break the circuit when current exceeds.

→It interrupt current flow after a fault is detected.

→It works on the heating effect of current.

Answer 2

ᴀɴsᴡᴇʀ࿐

ᴅᴇғɪɴɪᴛɪᴏɴ:-

ᴀ ᴍɪɴɪᴀᴛᴜʀᴇ ᴄɪʀᴄᴜɪᴛ ʙʀᴇᴀᴋᴇʀ ᴏʀ ᴍᴄʙ ɪs ᴀɴ ᴇʟᴇᴄᴛʀᴏᴍᴀɢɴᴇᴛɪᴄ ᴅᴇᴠɪᴄᴇ ᴛʜᴀᴛ ʜᴀᴠᴇ ᴀ ᴄᴏᴍᴘʟᴇᴛᴇ ᴍᴏʟᴅᴇᴅ ɪɴsᴜʟᴀᴛɪɴɢ ᴍᴀᴛᴇʀɪᴀʟ. ᴛʜᴇ ᴍᴀɪɴ ғᴜɴᴄᴛɪᴏɴ ᴏғ ᴛʜɪs ᴅᴇᴠɪᴄᴇ ɪs ᴛᴏ sᴡɪᴛᴄʜ ᴛʜᴇ ᴄɪʀᴄᴜɪᴛ ᴡʜᴇɴ ᴀᴄᴄᴇss ᴄᴜʀʀᴇɴᴛ ɪs ᴘᴀssᴇᴅ

ᴡᴏʀᴋɪɴɢ ᴏғ ᴍᴄʙ:-

ᴛʜᴇ ᴍᴄʙ ᴡᴏʀᴋs ᴀs ᴀ sᴡɪᴛᴄʜ ᴡʜɪᴄʜ ɪs ᴀ ᴍᴀɴᴜᴀʟ sᴡɪᴛᴄʜ sʜᴏʀᴛ ᴄɪʀᴄᴜɪᴛ ᴏʀ ᴏᴠᴇʀʟᴏᴀᴅ sɪᴛᴜᴀᴛɪᴏɴs, ᴛʜᴇ ᴅᴇᴠɪᴄᴇ ᴀᴜᴛᴏᴍᴀᴛɪᴄᴀʟʟʏ ᴛʀɪᴘs ᴡʜᴇɴ ᴀᴄᴄᴇss ᴄᴜʀʀᴇɴᴛ ɪs ᴘᴀssᴇᴅ.

ᴜsᴇs ᴏғ ᴍᴄʙ

1.ᴛʜᴇʏ ᴀʀᴇ ᴜsᴇᴅ ɪɴ ʜᴏᴍᴇ ᴀᴘᴘʟɪᴀɴᴄᴇs.

2.ᴛʜᴇʏ ᴀʀᴇ ᴜsᴇᴅ ɪɴ ʜᴇᴀᴛᴇʀs.

3.ᴛʜᴇʏ ᴀʀᴇ ᴜsᴇᴅ ɪɴ ɪɴᴅᴜsᴛʀɪᴇs.