HYDRAULICS AND FLUID MECHANICS IN ME QUIZ

dQ/Q = (3/2) × (dH/H)

dQ/Q = (1/2) × (dH/H)

dQ/Q = (dH/H)

dQ/Q = (3/4) × (dH/H)

Inward flow reaction turbine

Tangential flow impulse turbine

Inward flow impulse turbine

Outward flow impulse turbine

The velocity of successive fluid particles, at any point, is the same at successive periods of time

The magnitude and direction of the velocity do not change from point to point in the fluid

The fluid particles move in plane or parallel planes and the streamline patterns are identical in each plane

The direction and magnitude of the velocity at all points are identical

[2(Vr + v) v]/ Vr²

[2(Vr - v) v]/ Vr²

[(Vr + v) v]/ Vr

[(Vr - v) v]/ Vr

0.5

0.855

0.707

0.375

None of these

To change the direction of runner

To break the jet of water

To bring the runner to rest in a short time

24.8 r.p.m.

248 r.p.m

48.2 r.p.m

82.4 r.p.m.

All listed here

at mean sea level

at normal pressure of 760 mm

at 4°C temperature

Actual velocity of jet at vena-contracta to the theoretical velocity

Actual discharge through an orifice to the theoretical discharge

Area of jet at vena-contracta to the area of orifice

Loss of head in the orifice to the head of water available at the exit of the orifice

greater than 4

greater than unity

unity

greater than 2