LPAC is powered by which horsepower electric motor?

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Prepare for the Gas Turbine Systems Technician – Mechanical A School Test 1. Study with multiple choice questions that come with hints and explanations. Ace your exam!

Multiple Choice

LPAC is powered by which horsepower electric motor?

Explanation:
LPAC needs enough starting torque and air flow to spin up the low‑pressure compressor and supply the air required for engine starts and auxiliary duties. A 60 HP electric motor provides that needed torque and volume without being excessive. A motor as small as 30 HP would likely be undersized, struggling to deliver sufficient air at startup. Motors rated at 90 or 120 HP would provide more than needed, wasting energy, increasing cost, and requiring larger electrical feeds. Therefore, 60 HP is the right balance for reliable LPAC operation.

LPAC needs enough starting torque and air flow to spin up the low‑pressure compressor and supply the air required for engine starts and auxiliary duties. A 60 HP electric motor provides that needed torque and volume without being excessive. A motor as small as 30 HP would likely be undersized, struggling to deliver sufficient air at startup. Motors rated at 90 or 120 HP would provide more than needed, wasting energy, increasing cost, and requiring larger electrical feeds. Therefore, 60 HP is the right balance for reliable LPAC operation.

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