REFRACTORY TECHNOLOGY QUIZ

500°C

700°C

1000°C

200°C

5%

0.5%

1.0%

0.1%

Turbine blades, which is essentially an isentropic process

Turbine blades, which is a constant volume process

Exit nozzle, which is a constant volume process

Exit nozzle, which is essentially an isentropic process

(v₁ - v₂)²/2g

(v₁² -v₂²)/g

(v₁² -v₂²)/2g

(v₁ - v₂)²/g

p₁ p₂ = p₃ p₄

p₁ p₃ = p₂ p₄

p₂/p₁ = p₃/p₂ = p₄/p₃

p₃/p₁ = p₄/p₂

About 50% of swept volume

As small as possible

About 100% of swept volume

As large as possible

All of these

Adding heat exchanger

Injecting water in/around combustion chamber

Reheating the air after partial expansion in the turbine

0.15 to 5 m³/s

0.1 to 1.2 m³/s

Above 5 m³/s

None of these

Parallel

Inclined

Perpendicular

None of these

Aerofoil blades are used

Higher average velocities

Larger air handling ability per unit frontal area

Higher pressure ratio per stage