The valve used for very remote and accurate control of fluid is a _____________ valve?

A. Dynamic similarity
B. Same efficiency
C. Same speed
D. Geometrical similarity

A. Pressure reaches a minimum
B. Cross-section of the channel is reduced
C. Valve is closed in a pipeline
D. Velocity of sound is reached

A. Pressure drop increases linearly
B. Pressure drop is almost constant
C. Area through which fluid flows does not vary
D. None of these

A. Flow nozzle
B. Venturimeter
C. Rotameter
D. None of these

A. 0.5
B. 1
C. 1/3
D. 2/3

A. Velocity head
B. Pressure
C. Point velocity
D. None of these