To minimize axial thrust in an impulse...

To minimize axial thrust in an impulse...

Question 1 of 270705eccefa0bacbc34ba4d470e3

To minimize axial thrust in an impulse turbine, equalizing holes are located __________.

Question 1 of 27070

Q

To minimize axial thrust in an impulse turbine, equalizing holes are located __________.

🔍 Key Concepts

• Axial thrust in steam turbines and why it occurs • Function of a dummy piston in an impulse turbine • How pressure equalizing holes change pressure distribution

💭 Think About

• Think about which side(s) of the dummy piston need the same pressure if you want to reduce the net push in the axial direction. • Consider where the highest pressure steam is located and how connecting that space to another space would affect the force on the rotor. • Ask yourself: are equalizing holes meant to seal, to leak, or to balance? What two spaces would you want to balance in order to minimize thrust?

✅ Before You Answer

• Identify where the high-pressure region is relative to the dummy piston in an impulse turbine. • Identify where the lower-pressure region is that, if connected, would reduce the pressure difference across the dummy piston. • Verify which option actually connects two volumes so their pressures tend to equalize, rather than just providing flow or structural support.