ENN103F EXAM PACK 2026 ACTUAL PAPER
SOLVED QUESTIONS VERIFIED A+
◉ Ramjet. Answer: Has NO MOVING PARTS or major rotating
assemblies, also cannot accelerate from rest.
◉ Turbojet. Answer: Is an air breathing jet that can accelerate from rest.
It uses an exhaust gas driven turbine wheel to drive its compressor.
◉ Turboprop. Answer: Turbine engine drives a REDUCTION GEAR
assembly and a propeller.
◉ Turbofan. Answer: As with other gas turbines, it contains a turbine to
drive a compressor.
◉ Low Bypass, High Bypass. Answer: Turbojets have a primary and
secondary airflow.
◉ Turboshaft. Answer: Designed to drive MECHANICAL POWER
SHAFTS or propeller shafts.
◉ Bernoulli's Principle. Answer: States that when the speed of a stream
of fluid increases, the pressure and TEMPERATURE of the fluid
decreases, and vice-versa.
, ◉ Straight Duct. Answer: No change in VELOCITY or pressure and
duct diameter remains constant.
◉ Convergent Duct. Answer: VELOCITY INCREASES, pressure
decreases. Smaller diameter INCREASES velocity.
◉ Divergent Duct. Answer: Velocity decreases, pressure increases.
Larger diameter increases pressure.
◉ 5 Major Assemblies. Answer: Gear Box, Core Engine, Inlet Fan, Fan
Drive Turbine, Augmentor Duct and Nozzle
◉ NF/N1 Low Pressure Compressor. Answer: 3 stages, low pressure
compressor
◉ NG/N2 High Pressure Compresso. Answer: 10 stages of compression
and 2 variable compressor vanes
◉ Disk/Rotor. Answer: Rotor blades are mounted onto a __________.
◉ Duct, Disk Rotor. Answer: Increase in pressure is not accompanied by
loss of velocity because of convergence of the____and__________.
SOLVED QUESTIONS VERIFIED A+
◉ Ramjet. Answer: Has NO MOVING PARTS or major rotating
assemblies, also cannot accelerate from rest.
◉ Turbojet. Answer: Is an air breathing jet that can accelerate from rest.
It uses an exhaust gas driven turbine wheel to drive its compressor.
◉ Turboprop. Answer: Turbine engine drives a REDUCTION GEAR
assembly and a propeller.
◉ Turbofan. Answer: As with other gas turbines, it contains a turbine to
drive a compressor.
◉ Low Bypass, High Bypass. Answer: Turbojets have a primary and
secondary airflow.
◉ Turboshaft. Answer: Designed to drive MECHANICAL POWER
SHAFTS or propeller shafts.
◉ Bernoulli's Principle. Answer: States that when the speed of a stream
of fluid increases, the pressure and TEMPERATURE of the fluid
decreases, and vice-versa.
, ◉ Straight Duct. Answer: No change in VELOCITY or pressure and
duct diameter remains constant.
◉ Convergent Duct. Answer: VELOCITY INCREASES, pressure
decreases. Smaller diameter INCREASES velocity.
◉ Divergent Duct. Answer: Velocity decreases, pressure increases.
Larger diameter increases pressure.
◉ 5 Major Assemblies. Answer: Gear Box, Core Engine, Inlet Fan, Fan
Drive Turbine, Augmentor Duct and Nozzle
◉ NF/N1 Low Pressure Compressor. Answer: 3 stages, low pressure
compressor
◉ NG/N2 High Pressure Compresso. Answer: 10 stages of compression
and 2 variable compressor vanes
◉ Disk/Rotor. Answer: Rotor blades are mounted onto a __________.
◉ Duct, Disk Rotor. Answer: Increase in pressure is not accompanied by
loss of velocity because of convergence of the____and__________.
