PNG CASA Basic Gas Turbine Practice Questions - PNG CASA Basic Gas Turbine Knowledge Examination Exam - PNG CASA Basic Gas Turbine Practice Questions - PNG CASA Basic Gas Turbine Knowledge Examination Exam

Question 1

What primary thermodynamic cycle models the working process of a standard open-cycle gas turbine engine?

The constant-pressure Brayton cycle The constant-volume Otto cycle The constant-temperature Carnot cycle The dual-combustion Diesel cycle

Correct Answer:

The constant-pressure Brayton cycle

Question 2

A gas turbine engine has an overall compressor pressure ratio (r_p) of 16:1. Assuming a ratio of specific heats (gamma) of 1.4 for air, what is the ideal thermal efficiency of this Brayton cycle?

54.7% 37.5% 68.2% 42.1%

Correct Answer:

54.7%

Question 3

According to Charles's Law, if air entering a combustor at 500 K (227 °C) is heated at constant pressure to 1,500 K (1,227 °C), by what factor does its specific volume increase?

3.0 2.45 5.41 1.5

Correct Answer:

3.0

Question 4

How does reaction propulsion in a gas turbine engine demonstrate Newton's Third Law of Motion?

The forward thrust produced is equal and opposite to the backward momentum rate imparted to the gas mass flow The acceleration of the aircraft is inversely proportional to the mass of air entering the inlet diffuser Pressure energy created in the compressor directly converts to mechanical shaft power at constant volume The total energy of the airstream decreases across each turbine stage to balance ambient pressure drag

Correct Answer:

The forward thrust produced is equal and opposite to the backward momentum rate imparted to the gas mass flow

Question 5

What is the key functional difference between the working cycle of a four-stroke piston engine and a gas turbine engine?

A gas turbine performs intake, compression, combustion, and exhaust continuously and simultaneously in separate components A gas turbine completes all four cycles in a single cylinder during one rotation of the main shaft A piston engine operates at constant pressure during combustion whereas a gas turbine operates at constant volume A gas turbine does not require an ignition source because combustion occurs spontaneously via static compression heat

Correct Answer:

A gas turbine performs intake, compression, combustion, and exhaust continuously and simultaneously in separate components

Question 1

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About this Exam

Prepare with the PNG CASA Basic Gas Turbine Practice Questions - PNG CASA Basic Gas Turbine Knowledge Examination Exam practice quiz. This question bank includes 100 questions covering engine, compressor, turbine, pressure, and fuel. Use it to review important concepts, identify knowledge gaps, and build confidence for the related exam, course, or assessment.

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PNG CASA Basic Gas Turbine Practice Questions - PNG CASA Basic Gas Turbine Knowledge Examination Exam

This practice set contains 100 questions from the matching question bank and focuses on engine, compressor, turbine, pressure, and fuel. Work through each question carefully, review the provided solutions, and revisit topics that need more study before your next attempt.

This is an independent study resource intended for practice and review; it is not an official examination or an endorsement by any organization named in the title.

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PNG CASA Basic Gas Turbine Practice Questions - PNG CASA Basic Gas Turbine Knowledge Examination Exam

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