Which of the following is a key characteristic of a low-pressure blowpipe/torch in welding?
A low-pressure blowpipe (injector type torch) operates by using high-pressure oxygen, which passes through a small nozzle creating a vacuum effect (Venturi effect). This vacuum draws acetylene gas into the mixing chamber.
This design is useful when acetylene is supplied at low pressure. It does not require equal mixing or high-pressure acetylene cylinders.
According to BIS SP 46-2003, which of the following applications is correctly represented by a chain-thin line in engineering drawings?
If the current flowing through a conductor is 5 A and the resistance of the conductor is 10 ohms, what will be the voltage across the conductor, according to Ohm's Law?
What is single-riveted lap joint?
When two pulleys are more than 8 metres apart, then which of the following belt drives is used for power transmission?
Which of the following is NOT a failure mode of ball bearings?
Silicon carbide as a honing abrasive is best suited for which type of material?
Which hardness test uses a diamond pyramid-shaped indenter?
___________ microstructure is typically obtained after normalising low-carbon steel.
What does 'charging' of a lapping tool mean?
In a forward Vernier scale, the size of one Vernier scale division is:
