Aux 1 Unit 11 Q15

1 / 10

What is one major advantage of using hydraulically fitted shaft coupling bolts compared to parallel, interference fit bolts?

D) They require more specialized tools for installation.

C) They are cheaper to manufacture.

A) They require more time to install.

B) They allow for easier and more precise installation and removal, reducing the risk of damage to the shaft or coupling.

2 / 10

What is an advantage of using hydraulically fitted bolts regarding the risk of damaging the coupling during installation?

B) They minimize the risk of damaging the coupling during installation, as the process is controlled and force is applied evenly.

D) They often result in misalignment.

A) Hydraulically fitted bolts require greater force, increasing the risk of damage.

C) They require multiple attempts to fit correctly.

3 / 10

What advantage do hydraulically fitted bolts offer in terms of the force required for installation?

B) They require less force compared to interference fit bolts, as hydraulic pressure is used to expand the bolt and create a precise fit.

D) They are fitted without any force application.

A) They require excessive force, which can damage the components.

C) They require the same amount of force as interference fit bolts.

4 / 10

In terms of operational reliability, why might hydraulically fitted bolts be preferred over interference fit bolts?

B) They provide consistent and uniform clamping force, reducing the likelihood of loosening during operation.

A) They are less reliable in harsh conditions.

D) They require constant monitoring and adjustment.

C) They are more prone to loosening over time.

5 / 10

How do hydraulically fitted bolts affect the alignment of the shaft and coupling compared to interference fit bolts?

B) They provide a more accurate alignment by reducing the risk of misalignment during installation.

C) They make alignment less reliable.

D) They require post-installation realignment.

A) They complicate the alignment process.

6 / 10

Why are hydraulically fitted bolts generally preferred in high-stress applications compared to interference fit bolts?

C) They are more likely to fail under high stress.

A) They are lighter and less durable.

D) They are not suitable for high-stress applications.

B) They provide better stress distribution, which reduces the risk of stress concentrations and fatigue failure in high-stress applications.

7 / 10

What is an advantage of using hydraulically fitted bolts in terms of maintenance and servicing?

C) They require the use of heavy machinery for removal.

B) They allow for quicker and easier removal during maintenance or servicing, reducing downtime.

A) They are more difficult to remove.

D) They are permanently fixed and cannot be removed.

8 / 10

Why might hydraulically fitted bolts be considered more cost-effective in the long term compared to interference fit bolts?

C) They increase maintenance costs due to frequent adjustments.

A) They are more expensive initially, with no long-term benefits.

D) They require specialized equipment that increases long-term costs.

B) They reduce installation time, minimize the risk of damage, and make maintenance easier, leading to lower overall costs over the lifespan of the components.

9 / 10

What impact do hydraulically fitted bolts have on the need for re-machining or reworking of components?

B) They reduce the need for re-machining or reworking of components due to their precise and controlled fitting process.

D) They necessitate frequent adjustments after installation.

A) They increase the likelihood of requiring re-machining.

C) They often require reworking of the shaft or coupling.

10 / 10

How does the use of hydraulically fitted shaft coupling bolts improve the safety of the installation process?

C) It increases the likelihood of misalignment.

B) It requires workers to use more force.

A) It reduces the need for high-force hammering or pressing, minimizing the risk of injury or damage to the components.

D) It requires more personnel to handle the installation.

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