46) LPG means

low pressure gas

low power gas

low petroleum gas

liquefied petroleum gas

Answer is:

liquefied petroleum gas

ISRO Technician-B Fitter Question Paper - 2015 (Set - 1) with Answer Key

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47) Type of thread in a pipe is called

BSP thread

BSW thread

metric thread

acme thread

Answer is:

BSP thread

48) Lathe bed is made of

mild steel

cast iron

alloy steel

carbon steel

Answer is:

cast iron

Explanation:

Cast iron is commonly used for machinery housings or base due to its damping characteristics. It is also known for holding its shape when it is subjected to contraction and expansion due to temperature fluctuations. Hence lathe bed is usually made up of cast iron.