Oilers/Plant Tenders (HHC) Civil Service Practice Exam

What is typically a consequence of improper maintenance in a pump regarding packing?

1. Increased lubrication effectiveness

2. Reduced pumping efficiency

3. Instant torque enhancement

4. Elimination of noise

The correct answer is: Reduced pumping efficiency

The consequence of improper maintenance in a pump regarding packing commonly leads to reduced pumping efficiency. When packing is not adequately maintained, it can wear down or become misaligned, which results in leakage. This leakage decreases the pump's ability to maintain pressure and flow, therefore reducing its overall efficiency. Additionally, the improper sealing from worn packing can lead to increased friction, further hampering the pump’s performance. In contrast, the other options describe outcomes that either would not occur or are unlikely to result from improper packing maintenance. Increased lubrication effectiveness is not a typical result, as poor maintenance generally leads to reduced lubrication performance due to leaks and insufficient lubrication material. Instant torque enhancement is an unlikely outcome because inadequate packing often increases resistance rather than improving performance. Lastly, elimination of noise would not be a typical result, as worn packing can actually cause more noise through vibration and operation disruptions.