LCS ESWS Engineering Exam UPDATED
QUESTIONS AND CORRECT ANSWERS
4 major components of the LM2500 operations - CORRECT ANSWER Base enclosure
assembly
Gas turbine assembly
Engine controller
LOSCA
How many shock mounts does GT module have - CORRECT ANSWER 32
What constitutes an anti-icing condition for an LM2500 - CORRECT
ANSWER Temperature below 41°F and humidity greater than 70%
What is the primary extinguishing system for LM2500 GT - CORRECT
ANSWER HFP
What is the secondary extinguishing agent for LM2500 GT - CORRECT
ANSWER AFFF
Where is the gas turbine manual fire alarm - CORRECT ANSWER Next to the access
door on the module
How many HFP discharge nozzles does each gas turbine module have - CORRECT
ANSWER 2
How long is the time delay of HFP release inside a gas turbine module - CORRECT
ANSWER 30 seconds
How many flame detectors does each gas turbine module have - CORRECT
ANSWER 5
,AFFF-water mixture for LCS - CORRECT ANSWER 3/97
How many stages does the compressor on a GTE have - CORRECT ANSWER 16
How many stages to the HP turbine of a GTE - CORRECT ANSWER 2
How many stages to the LP turbine of a GTE - CORRECT ANSWER 6
On a LM2500, is the LP or HP turbine the power turbine - CORRECT ANSWER LP
turbine
What couples the LM 2500 power turbine to the MRG input shaft - CORRECT
ANSWER High speed flexible coupling
What type of compressor does an LM2500 have - CORRECT ANSWER Axial flow
4 sections of a GTE combustor - CORRECT ANSWER Cowl assembly
Done
Inner liner
Outer liner
How many fuel nozzles does a GTE have - CORRECT ANSWER 30
How many spark igniter's does a GTE have - CORRECT ANSWER 2
What type of starter does the LM2500 have - CORRECT ANSWER Hydraulic
, Three components of the gas generator section of an LM2500 - CORRECT
ANSWER Compressor
Combustor
HP turbine
How much horsepower is the LM2500 rated at - CORRECT ANSWER 29,500
SSS clutch (acronym) - CORRECT ANSWER Synchro self shifting
Where does the anti-icing air come from - CORRECT ANSWER 16th stage of the
compressor
What is the major disadvantage of a gas turbine - CORRECT ANSWER Fuel
consumption
What are the two locations to start a gas turbine - CORRECT ANSWER ECS and LOP
How many fuel shutdown valves does the LM2500 have - CORRECT ANSWER 2
What does the LM stand for in LM2500 - CORRECT ANSWER Land marine
LOSCA (acronym) - CORRECT ANSWER Lube oil storage and conditioning
assembly
Share are the LOSCAS' located - CORRECT ANSWER MER 1, upper level
What type of fuel is used in the LM2500 - CORRECT ANSWER 23699 synthetic
What is the cooling medium for 23699? - CORRECT ANSWER 1640 lube oil
QUESTIONS AND CORRECT ANSWERS
4 major components of the LM2500 operations - CORRECT ANSWER Base enclosure
assembly
Gas turbine assembly
Engine controller
LOSCA
How many shock mounts does GT module have - CORRECT ANSWER 32
What constitutes an anti-icing condition for an LM2500 - CORRECT
ANSWER Temperature below 41°F and humidity greater than 70%
What is the primary extinguishing system for LM2500 GT - CORRECT
ANSWER HFP
What is the secondary extinguishing agent for LM2500 GT - CORRECT
ANSWER AFFF
Where is the gas turbine manual fire alarm - CORRECT ANSWER Next to the access
door on the module
How many HFP discharge nozzles does each gas turbine module have - CORRECT
ANSWER 2
How long is the time delay of HFP release inside a gas turbine module - CORRECT
ANSWER 30 seconds
How many flame detectors does each gas turbine module have - CORRECT
ANSWER 5
,AFFF-water mixture for LCS - CORRECT ANSWER 3/97
How many stages does the compressor on a GTE have - CORRECT ANSWER 16
How many stages to the HP turbine of a GTE - CORRECT ANSWER 2
How many stages to the LP turbine of a GTE - CORRECT ANSWER 6
On a LM2500, is the LP or HP turbine the power turbine - CORRECT ANSWER LP
turbine
What couples the LM 2500 power turbine to the MRG input shaft - CORRECT
ANSWER High speed flexible coupling
What type of compressor does an LM2500 have - CORRECT ANSWER Axial flow
4 sections of a GTE combustor - CORRECT ANSWER Cowl assembly
Done
Inner liner
Outer liner
How many fuel nozzles does a GTE have - CORRECT ANSWER 30
How many spark igniter's does a GTE have - CORRECT ANSWER 2
What type of starter does the LM2500 have - CORRECT ANSWER Hydraulic
, Three components of the gas generator section of an LM2500 - CORRECT
ANSWER Compressor
Combustor
HP turbine
How much horsepower is the LM2500 rated at - CORRECT ANSWER 29,500
SSS clutch (acronym) - CORRECT ANSWER Synchro self shifting
Where does the anti-icing air come from - CORRECT ANSWER 16th stage of the
compressor
What is the major disadvantage of a gas turbine - CORRECT ANSWER Fuel
consumption
What are the two locations to start a gas turbine - CORRECT ANSWER ECS and LOP
How many fuel shutdown valves does the LM2500 have - CORRECT ANSWER 2
What does the LM stand for in LM2500 - CORRECT ANSWER Land marine
LOSCA (acronym) - CORRECT ANSWER Lube oil storage and conditioning
assembly
Share are the LOSCAS' located - CORRECT ANSWER MER 1, upper level
What type of fuel is used in the LM2500 - CORRECT ANSWER 23699 synthetic
What is the cooling medium for 23699? - CORRECT ANSWER 1640 lube oil
