PASGT SEMIFINAL QUIZ 1
Authored by Jimmy Jay V Bigaran
Engineering
University
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20 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why must the turning gear be disengaged before starting the turbine?
To improve fuel atomization and combustion chamber ignition efficiency
To avoid severe mechanical damage during rapid rotor acceleration
To purge residual moisture from the intake before startup
To keep bearing temperatures low during pre-start cooling
2.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why is a controlled cool-down phase required after load reduction?
To allow the lubrication system to circulate oil for extended periods
To keep the turbine casing temperature slightly elevated for next restart
To prevent thermal shock, material stress, and rotor bowing during cooldown
To support the ignition system in maintaining stable flame conditions
3.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why is maintaining a correct fuel-air ratio important during operation?
To extend the service life of the fuel pump and burner nozzles
To slow the rate of exhaust gas expansion and rotor acceleration
To ensure efficient combustion while avoiding thermal stress and incomplete burning
To improve lubricating oil flow rate throughout the system
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why should lubrication pumps remain operational during a turbine rundown?
To prevent bearing wear or damage while the rotor decelerates under inertia
To regulate exhaust gas flow and stabilize post-combustion cooling
To enable the turbine to accelerate quickly on the next startup
To preheat the fuel system before shutdown is complete
5.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the primary purpose of gradual load application during startup?
To reduce vibration in the reduction gear before coupling to the shaft
To activate trip circuits and alarms before the ignition stage
To enable maximum thrust to be reached more quickly and efficiently
To avoid thermal shock, material expansion issues, and allow steady stabilization
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why is PPE essential during turbine operation?
To optimize cooling air distribution and reduce blade temperature
To reduce exhaust gas temperature during post-combustion operation
To protect personnel from risks such as intense noise, radiant heat, and fire hazards
To extend the operating life of major rotating components
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Why must foreign object debris (FOD) be removed before startup?
To minimize temperature fluctuations in the exhaust sensor array
To accelerate combustion chamber ignition and airflow response
To allow intake pressure to rise more rapidly during initial startup
To prevent blade erosion, imbalance, and potentially catastrophic fractures
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