What type of couplings are used in applications where only small amounts of misalignment can be tolerated without damage to equipment or decreased performance?
A. Rigid
B. Fluid
C. Flexible
D. Rotating
A. Correct. Rigid couplings are used in applications where only small amounts of misalignment can be tolerated without damage to equipment or decreased performance.
B. Incorrect. Fluid couplings are used in applications where variable speed operations occur.
C. Incorrect. Flexible couplings are used most frequently in general mechanical power transmission service because they allow some misalignment without affecting the transmission of power.
D. Incorrect. Rotating is not a type of coupling.
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