Question 169Gas Turbine - Assistant Engineer
70% to passBall or roller antifriction bearings are used to support gas turbine rotors for all EXCEPT which of the following?
ATo accommodate both axial and radial loads
BTo offer maximum rotational resistance
CTo facilitate precision alignment
DTo withstand high momentary overloads
AI Explanation
The correct answer is B) To offer maximum rotational resistance. Ball or roller antifriction bearings are used to support gas turbine rotors primarily to accommodate both axial and radial loads (A), facilitate precision alignment (C), and withstand high momentary overloads (D). These bearings minimize friction and allow for smooth, efficient rotation of the turbine rotor. However, they are not primarily used to offer maximum rotational resistance (B). In fact, the purpose of these bearings is to minimize resistance and allow for free rotation of the turbine shaft, not to increase it. The other answer choices accurately describe the key functions of these bearings in supporting the gas turbine rotor.
Related Questions
Q111:What is the difference between an open cycle and a closed cycle gas turbine engi... Q62:"Standard Day" conditions, as defined by the ISO, is which of the following? ... Q52:For the GE LM2500 gas turbine shown in the illustration, the 9th stage bleed air... Q38:Before combustion can occur, the combustion air must be delivered to the combust... Q154:Routine water washing of the gas turbine engine compressor shown in the illustr...
Ready to test your knowledge?
Take a Gas Turbine - Assistant Engineer Practice ExamOfficial Resources