Directions: The following 12 (Twelve) items consist of two statements: one labeled as the ‘Assertion (A)’ and the other as ‘Reason (R)’. You are to example these two statements carefully and select the answer to these items using the codes given below:
Assertion (A) : When the pressure ratio 
in a nozzle reaches critical pressure ratio, the discharge becomes zero.
Reason (R) : The nozzle gets choked.