For the following questions answer them individually
When starting a centrifugal pump, the delivery valve is kept
Cavitation may occur in a fluid flow if
A device in which some portion of waste heat of flue gases is recovered to heat the air before it passes into the furnace for combustion purpose, is known as
Which aspect is not valid for a fire tube locomotive boiler?
Refer to the figure:- $$P_{A} - P_{B}$$ is
For a body placed in water, the resultant hydrostatic force at its:
In pressure welding, the pressure required to consummate the weld is