A nozzle is
said be choked when:
Flow through
it is maximum and exit pressure is critical pressure.
It discharges
flow into the atmosphere
It gets
plugged
Flow-through it becomes zero and exit pressure is zero
Flow through
it is maximum and exit pressure is critical pressure.
A nozzle is
said to be choked when flow through it is maximum and exit pressure is critical
pressure.
Hence, the correct option is (A).
&Key Points:-
A nozzle is
a device designed to control the direction or characteristics of a fluid flow
(especially to increase velocity) as it exits (or enters) an enclosed chamber
or pipe. A nozzle is often a pipe or tube of varying cross sectional
area and it can be used to direct or modify the flow of a fluid (liquid or
gas).
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