pressure increases while velocity decreases

pressure decreases while velocity increases

pressure and velocity both decreases

pressure and velocity both increases

pressure increases while velocity decreases

pressure decreases while velocity increases

pressure and velocity both decreases

pressure and velocity both increases

fixed blades

moving blades

both fixed and moving blades

none of these

2Cosα

Cos2α

Cos(α/2)

Cos²α

2 sin²α/(1 + sin²α)

2 cos²α/(1 + cos²α)

(1 + sin²α)/2 sin²α

(1 + cos²α)/2 cos²α

V_b = 0.5 V cos α

V_b = V cos α

V_b = 0.5 V² cos α

V_b = V² cos α

single rotor impulse turbine

multi-rotor impulse turbine

impulse reaction turbine

none of these

absolute velocity at the inlet of moving blade is equal to that at the outlet

relative velocity at the inlet of the moving blade is equal to that at the outlet

axial velocity at inlet is equal to that at the outlet

whirl velocity at inlet is equal to that at the outlet

where low speeds are required

for small power purposes and low speeds

for large power purposes

for small power purposes and high speeds

simple reaction turbine

velocity compounded turbine

pressure compounded turbine

pressure-velocity compounded turbine