The diameter of a dummy piston installed in...

Question 1 / 270705eccefa0bacbc34ba4d470c3

Question 1 of 270705eccefa0bacbc34ba4d470c3

The diameter of a dummy piston installed in a reaction turbine is determined by __________.

Question 1 of 27070

The diameter of a dummy piston installed in a reaction turbine is determined by __________.

🔍 Key Concepts

• Dummy piston function in a reaction turbine (what problem is it solving?) • How axial thrust is produced in a reaction turbine and what affects its magnitude • Which factors are design parameters for thrust balancing versus secondary/less critical factors

💭 Think About

• Ask yourself: What is the main purpose of a dummy piston in a reaction turbine, and which variable must it primarily balance? • Which of the listed choices directly affects the amount of thrust acting along the shaft rather than temperature, speed, or volumes? • Think about which factors would be most important to the designer when choosing the piston’s diameter, not just any part of the system.

✅ Before You Answer

• Identify which choice mentions thrust or something that clearly controls axial force on the rotor • Eliminate any options that deal mainly with temperature, RPM, or volumes/pressures that are only indirectly related to thrust balancing • Confirm that the factor you pick would logically be used to size (set the diameter of) a balancing or dummy piston.

Question 1 of 27070

The diameter of a dummy piston installed in a reaction turbine is determined by __________.

rotor design and the amount of thrust to be counteracted

steam temperature and design RPM

the length and diameter of the equalizing line

the volume of the exhaust trunk and pressure drop over the last stage

Question 1 / 270705eccefa0bacbc34ba4d470c3

Question 1 of 270705eccefa0bacbc34ba4d470c3

The diameter of a dummy piston installed in a reaction turbine is determined by __________.

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Question 1 of 27070

The diameter of a dummy piston installed in a reaction turbine is determined by __________.