LGTCO/LGTF Exit Exam • Set 6 Question 1 of 30
Running two identical centrifugal cargo pumps in parallel will result in:
✓
Direct Answer
Option B: Almost double the discharge flow rate with discharge pressure largely unchanged
Operating centrifugal pumps in parallel increases the total volumetric discharge flow rate (nearly double, depending on system backpressure) while the total discharge head/pressure remains approximately constant.
All Options
A
Almost double the discharge pressure with the same discharge rate
B
Almost double the discharge flow rate with discharge pressure largely unchanged
(Correct Answer)
C
Double discharge rate and double discharge pressure simultaneously
D
The exact same discharge pressure and rate as running one pump
Detailed Explanation & Context
Operating centrifugal pumps in parallel increases the total volumetric discharge flow rate (nearly double, depending on system backpressure) while the total discharge head/pressure remains approximately constant.
Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Liquefied Gas Tanker Cargo Operations (LGTCO/LGTF).
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