Based on the following two statements related to the Specific speed of centrifugal pump, select the correct option.
Statement (I): The specific speed (NS) of a centrifugal pump is defined as the speed (in rpm) at which it works most efficiently.
Statement (II): The specific speed is a characteristic of pumps that can be used as a basis for comparing the performance of centrifugal pumps.
1
Statement I is true, but statement II is false.
2
Both statements I and II are true.
3
Statement II is true, but statement I is false.
4
Both statements I and II are false.