What does the engine vibration sensors measure?

The radial acceleration of the rotor system.

The axial acceleration of the rotor system.

The axial and radial acceleration of the rotor system.

Which parameters are the engines used to measure the thrust ?

The engine pressure ratio or the RPM

The engine pressure ratio or the engine burn temperature

The engine fuel flow or the RPM

The term thrust specific fuel consumption (TSFC) is

The amount of fuel which an engine needs to make 1kN of thrust for 1hour.

The amount of fuel which an engine used at 100% speed for 1hour.

The amount of fuel which an engine used at idle speed for 1hour.

There was no engine compressor before 1937 due to

There was no material that was heat-resistant enough for continuous combustion.

The engine without compressor has better performance

Turboprop engines do not use on large A/C due to

It's hard to manage the rotation speed of propeller

A turbojet engine is smoother running than a piston engine because.(Level 2)

it runs at a lower temperature.

A gas turbine engine comprises which three main sections?.(Level 2)

Turbine, compressor, and combustion.

Compressor, diffuser, and stator.

Turbine, combustion, and stator.

Newton's First Law of Motion, generally termed the Law of Inertia, states:.(Level 2)

Every body persists in its state of rest, or of motion in a straight line, unless acted upon by some outside force.

To every action there is an equal and opposite reaction.

Force is proportional to the product of mass and acceleration.

Bernoulli's Theorem states that at any point in a flow of gas.(Level 2)

the total energy remains constant.

the static pressure and dynamic pressure are equal.

the static pressure is less than the dynamic pressure.

A modular constructed gas turbine engine means that.(Level 2)

its major components can be removed and replaced without disturbing the rest of the engine.

all engines have a specific component layout.

the engine is constructed by the vertical assembly technique.

A divergent duct will cause subsonic flow to decrease in.(Level 2)

velocity, pressure remains constant.

Which of the following statements is true on a high bypass ratio turbofan?.(Level 2)

Both the compressor and combustion chamber are smaller than the turbojet equivalent.

Both the compressor and combustion system are larger than their turbojet equivalent.

The compressor assembly is larger and combustion chamber smaller than their turbojet equivalent.

The 'core engine' or 'gas generator' is made up of the following components:.(Level 2)

Turbine, combustion chamber, compressor.

Inlet, compressor, combustion chamber, turbine, exhaust.

Compressor, turbine, exhaust, propelling nozzle.

At constant RPM, the pressure ratio of the compressor and the temperature rise across the compressor.(Level 2)

remains constant irrespective of height.

What effect does high atmospheric humidity have on the operation of a jet engine?.(Level 2)

Decreases compressor and turbine RPM.

Decreases engine pressure ratio.

Thrust rating on an FADEC controlled engine can be changed by.(Level 2)

changing the engine rating plug.

varying the ballast resistor in the EGT system.

If the throttle position remains constant.(Level 2)

with increasing OAT, RPM and TGT will increase.

with decreasing OAT, RPM will increase.

with increasing OAT, TGT will increase.

Ram pressure recovery will generally take effect at aircraft speeds of.(Level 2)

only when the aircraft is stationary with engines running.

As the air is passed through the turbine, due to the convergent shape formed between adjacent blades.(Level 2)

pressure decreases, velocity increases, temperature decreases.

pressure decreases, velocity increases, temperature increases.

pressure increases, velocity increases, temperature constant.

To maintain the selected RPM of a gas turbine at altitude.(Level 2)

the fuel will automatically be reduced as the aircraft climbs.

the pilot will have to throttle back.

more fuel will automatically be added.

At higher then standard day ambient temperatures, compressor speed will be.(Level 2)

higher than standard day speed.

Most likely parameter limiting the height at which a jet engine powered aircraft can operate would be insufficient.(Level 2)

lift to support the aircraft weight.

mass airflow to maintain 15:1 air/fuel ratio.

As air density changes the RPM of a gas turbine engine will change. How is RPM kept at a constant speed?.(Level 2)

Automatically by a simple engine device.

The term 'Ram Ratio' in regard to air intakes is the relationship between.(Level 2)

ambient pressure and compressor inlet pressure.

ambient pressure and ambient temperature.

ambient temperature and compressor inlet temperature.

As an aircraft approaches the transonic range, the aerodynamic efficiency of a Pitot type intake.(Level 2)

decreases due to the shock wave.

increases due to the ram effect.

is not effected by forward speed.

With an electrical ice protection system, the heating elements operate.(Level 2)

part continuous - part intermittent.

The vortex dissipators installed on some turbine-powered aircraft to prevent engine FOD utilize.(Level 2)

a stream of engine bleed air blown toward the ground ahead of the engine.

variable inlet guide vanes (IGV) and/or variable first stage fan blades.

Variable Ramp Intakes restrict airflow by.(Level 2)

creating shock-waves in the intake.

diverting the airflow around the intake.

reducing the area of the intake.

200-314 part 1

Authored by Hiếu Nguyễn Minh

Biology

1st - 5th Grade

Used 5+ times

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114 questions

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MULTIPLE CHOICE QUESTION

20 sec • 1 pt

What bearing is used to take axial loads on a main rotation shaft of a gas turbine engine?

Plain bearing.

Roller bearing.

Ball bearing.

MULTIPLE CHOICE QUESTION

45 sec • 1 pt

A floating bearing is usually

Plain bearing.

Roller bearing.

Ball bearing.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which types of sensor is normally used to measure the N1 rotor speed?

The tachometer generator type sensor

The variable reluctance type sensor.

The inductive type sensor.

MULTIPLE CHOICE QUESTION

3 mins • 1 pt

Which types of sensor is normally used to measure the N2 rotor speed?

The tachometer generator type sensor or The inductive type sensor.

The inductive type sensor or the variable reluctance type sensor.

The tachometer generator type sensor or the variable reluctance type sensor.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

On engine speed indication, the red line shows on N1 indication it mean:

The reference of speed N1 target.

The speed N1 limit.

The exceedance of speed N1 before.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

A flat rated engine gives a constant thrust at

All ambient conditions below this flat rate temperature.

All ambient conditions above this flat rate temperature.

All ambient conditions

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The thermocouples for the EGT are

Connected in parallel in order to measure the average exhaust gas temperature.

Connected in serial in order to measure the average exhaust gas temperature.

Directly to engine control unit in order to measure the average exhaust gas temperature.

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