expands

does not change

contracts

none of these

An equivalent pipe is treated as an ordinary pipe for all calculations

The length of an equivalent pipe is equal to that of a compound pipe

The discharge through an equivalent pipe is equal to that of a compound pipe

The diameter of an equivalent pipe is equal to that of a compound pipe

0.34 times

0.67 times

0.81 times

0.95 times

double

four times

eight times

sixteen times