The fan rotational speed of a dual axial compressor forward fan engine is the same as the

What turbine engine section provides for proper mixing of the fuel and air?

In a gas turbine engine, combustion occurs at a constant

In the dual axial-flow or twin spool compressor system, the first stage turbine drives the

The turbine section of a jet engine

What is the function of the stator vane assembly at the discharge end of a typical axial-flow compressor?

Where is the highest gas pressure in a turbojet engine?

An exhaust cone placed aft of the turbine in a jet engine will cause the pressure in the first part of the exhaust duct to

A turbine engine compressor which contains vanes or both sides of the impeller is a

Some engine manufacturers of twin spool gas turbine engines identify turbine discharge pressure in their maintenance manuals as

Main bearing oil seals used with turbine engines are usually what type(s)?

What are the two basic elements of the turbine section in a turbine engine?

The function of the exhaust cone assembly of a turbine engine is to

What are the two functional elements in a centrifugal compressor?

An advantage of the axial-flow compressor is its

What is one purpose of the stator blades in the compressor section of a turbine engine?

What is the purpose of the diffuser section in a turbine engine

How does a dual axial-flow compressor improve the efficiency of a turbojet engine?

Three types of turbine blades are

Which statements are true regarding aircraft engine propulsion? 1. An engine driven propeller impar ts a relatively small amount of acceleration to a large mass of air. 2. Turbojet and turbofan engines impart a rela- tively large amount of acceleration to a smaller mass of air. 3. In modern turboprop engines, nearly 50 percent of the exhaust gas energy is extracted by turbines to drive the propeller and compressor with the rest providing exhaust thrust.

Which turbine engine cormpressor offers the greatest advantages for both starting flexibility and improved high-altitude performance?

Reduced blade vibration and improved airflow characteristics in gas turbines are brought about by

In which type of turbine engine combustion chamber is the case and liner removed and installed as one unit during routine maintenance?

The Diffuser section of a jet engine is located between

Between each row of rotating blades in a turbine engine compressor, there is a row of stationary blades which act to diffuse the air. These stationary blades are called

The two types of centrifugal compressor impellers are

Which two elements make up the axial-flow compressor assembly?

An advantage of the centrifugal-flow compressor is its high

The highest heat-to-metal contact in a jet engine is the

A weak fuel to air mixture along with normal airflow through a turbine engine may result in

What is used in turbine engines to aid in stabilization of compressor airflow during low thrust engine operation?

In an axial-Tlow Compressor, one purpose of the stator vanes at the discharge end of the compressor is to,

A purpose of the shroud on the turbine blades of an axial-flow engine is to

In a dual axial-flow compressor, the first stage turbine drives

What is the primary advantage of an axial-flow compressor over a centrifugal Compressor?

The purpose of a bleed valve, located in the beginning stages of the compressor, in an aircraft gas turbine engine is to

Ina turbine engine with a dual-spool compressor, the low speed compressor

What is the function of the inlet guide vane assembly on an axial-flow compressor?

The stator vanes in an axial-flow compressor

A gas turbine engine comprises which three main sections?

What type of turbine blade is most commonly used in aircraft jet engines?

What is the primary factor which controls the pressure ratio of an axial-fiow compressor?

What is meant by a double entry centrifugal compressor?

A high surge of current is required when a DC electric motor is first started. As the speed of the motor increases,

Electric motors are often classified according to the method of connecting the field coils and armature. Aircraft engine starter motors are generally of which type?

A certain direct current series motor mounted within an aircraft draws more amperes during start than when it is running under its rated load. The most logical conciusion that may be drawn is

What type of electric motor is generally used with 2 direct-cranking engine starter?

(Refer to Powerplant figure 5 on page 8-11.) The type of system depictea is capable of operating with

When the starter switch to the aircraft gas turbıne engine starter-generator is energized and the engine fails to rotate, one of the probable causes would be the

What are two types of AC motors that are used to produce a relatively high torque?

Which of the following aircraft circuits does NOT contain a fuse/circuit breaker?

As a general rule, starter brushes are replaced when they are approximately

When using an elecric starter motor, the current flow through it

The purpose of ari under current relay in a starter-generator system is to

In a typical starter-generatot system, under which of the following starting circumstances may it be necessary to use the start stop switch?

When using an electric starter motor, current usage

The primary advantage of pneumatic (air turbine) starters over comparable electric starters for turbine engines is

Inspection of pneumatic starters by maintenance technicians usually includes checking the

Pneumatic starters are usually designed with what types of airflow impingemnent systems?

A clicking sound heard at en gine coast-down in a pneumatic starter incorporating a sprag clutch ratchet assembly is an indication of

Air turbine starters are generally designed so that reduction gear distress or damage may be detected by

Airflow to the pneumatics starter from a ground unit is normally prevented from causing starter overspeed during engine start by

What is used to polish commutators or slip rings?

A satety feature usually employed in pneumatie arters that is used if the clutch does not release from the engine drive at the proper time during start is the

A safety feature usually employed in pneumatic starters that is used to prevent the starter from reaching burst speed if inlet air does not terminate on schedule is the

In the event a pneumatic start valve will not operate and the manual override must be used, the starter T handle must be closed at scheduled starter drop out because

One of the best indicators of reciprocating engine combustion chamber problems is

When a magneto is disassembled, keepers are usually placed across the poles of the rotating magneto reduce the loss of magnetism. These keepers are usually made of

If the ignition switch is moved from BOTH to either LEFT or RIGHT during an engine round check, normal operation is usually indicated by a

What tool is generally used to measure the crarkshaft rotation in degrees?

The greatest density of flux lines in the magnetic circuit of a rotating magnet-type magneto occurs when the magnet is in what position?

Magneto breaker point opening relative to the position of the rotating magnet and distributor rotor (internal timing) can be set most accurately

The E-gap angle is usually de fined as the number of degrees between the neutral position of the rotating magnet and the position

When timing a. magneto internaly, the aiignment of the timing marks indicates that the

When internally timing a magneto, the breaker points begin to open when thu rotating magnet is

What is the purpose of a safety gap in some magnetos?

When timing a magneto internally, the alignment of the timing marks indicates that the

When internally timing a magneto, the breaker points begin to open when the rotating magnet is

Why are bigh-tension ignition cables frequently routed from the distributors to the spark plugs in flexible metallic conduits?

What will be the results of increasing the gap of the breaker points in a magneto?

What is the radial location of the two north poles of a four-pole rotating magnet in a high-tension magneto?

When a "Shower of Sparks" ignition system is activated at an engine start, a spark plug fires

Magneto timing drift is caused by erosion of the breaker points and

What is the electrical location of the primary capacitor in a high-tension magneto?

When the switch is off in a battery ignition system the primary circuit is

As an aircraft engine's speed is increased, the voltage induced in the primary coil of the magneto

In an aircraft ignition system, one of the functions of the capacitor is to

What components make up the magnetic system of a magneto?

Capacitance after firing in most modern spark plugs is reduced by the use of

How many secondary coils are required in a lowtension ignition system on an 18-cylinder engine?

A magneto ignition switch is connected

The spark is produced in a magneto ignition system when the breaker points are