Direction: Each of the next consists of two statements one labeled as the ‘Assertion(A)’ and the other as ‘Reason (R)’. You are examine these two statements carefully and select the answers to these items using the codes given below:
a. Both A and R are individually true and R is the correct explanation of A
b. Both A and R are individually true but R is not the correct explanation of A
c. A is true but R is false
d. A is false but R is true
Assertion (A): A correctly designed convergent divergent nozzle working at designed conditions is always chocked.
Reason (R): In these conditions the mass flow through the nozzle is minimum.