Hydraulic Machines

A. smoothen flow
B. reduce acceleration to minimum
C. increase pump efficiency
D. save pump from cavitation
E. increase pump head

A. radially, axially
B. axially, radially
C. axially, axially
D. radially, radially
E. combination of axial and radial

The angle of taper on draft tube is
A. greater than 15°
B. greater than 8°
C. greater than 5°
D. less than 8°
E. less than 3°.

A. low head
B. high head
C. high head and low discharge
D. high head and high discharge
E. low head and high discharge

A. increases with increase in pressure
B. decreases with increase in pressure
C. more or less remains constant with in-crease in pressure
D. unpredictable
E. none of the above

A. lift and resultant force
B. drag and resultant force
C. lift and tangential force
D. lift and drag
E. resultant force and tangential force

A. friction loss
B. cavitation
C. static head
D. loss of kinetic energy
E. starting time

A. propeller turbine
B. Francis turbine
C. impulse turbine
D. any one of the above
E. none of the above

A. 4
B. 6
C. 8
D. 12
E. 16.

A. net head
B. absolute velocity
C. blade velocity
D. flow
E. relative velocity of flow at inlet