Which of the following will have the lowest RPM at any given engine speed?

Which of the following breaker point characteristics is associated with a faulty capacitor?

Aircraft magneto housings are usually ventilated in order to

In a low-tension ignition system, each spark plug requires an individual

In the aircraft magneto system, if the P-lead is disconnected, the magneto will be

The purpose of a safety gap in a magneto is to

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

A safety feature usually employed in pneumatic starters that is used if the clutch does not release from the engine drive at the proper time during start is the

Generally, when removing a turbine engine igniter plug, in order to eliminate the possibility of the technician receiving a lethal shock, the ignition switch is turned off and

Igniter plugs used in turbine engines have a long service life because they

Why are turbine engine igniters less susceptible to fouling than reciprocating engine spark plugs?

The term ‘reach,' as applied to spark plug design and/or type, indicates the

A defective primary capacitor in a magneto is indicated by

when does the ignition event take place?

Which of the following could cause damage to the nose ceramic or to the electrode of an aircraft spark plug?

When internally timing a magneto, the breaker points begin to open whenWhen internally timing a magneto, the breaker points begin to open when

What should be used to clean grease or carbon tracks from capacitors or coils that are used in magnetos?

If it is found that a shielded ignition system does not adequately reduce ignition noise, it may be necessary to install

Which of the following are distinct circuits of a high tension magneto?

If new breaker points are installed in a magneto on an engine, it will be necessary to time the

Magneto breaker points must be timed to open when the

Which statement is correct regarding the ignition system of a turbine engine?

How does high-tension ignition shielding tend to reduce radio interference?

If staggered ignition timing is used, the

In a high-tension ignition system, the current in the magneto secondary winding is

A spark plug is fouled when

When removing a shielded spark plug, which of the following is most likely to be damaged?

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

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

Ignition check during engine run-up indicates excessive RPM drop during operation on the right magneto.

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

What are two parts of a distributor in an aircraft engine ignition system? 1. Coil 2. Block 3. Stator 4. Rotor 5. Transformer

What test instrument could be used to test an ignition harness for suspected leakage?

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

When a magneto is operating, what is the probable cause for a shift in internal timing?

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

Capacitance after firing of a spark plug is caused by

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

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

Which of the following, obtained during magneto check at 1,700 RPM, indicates a short (grounded) circuit between the right magneto primary and the ignition switch?

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

Great caution should be exercised in handling damaged hermetically sealed turbine engine igniter transformer units because

Upon inspection of the spark plugs in an aircraft engine, the plugs were found caked with a heavy black soot. This indicates

Inspection of pneumatic starters by maintenance technicians usually includes checking the

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

Defective spark plugs will cause the engine to run rough

When the ignition switch of a single (reciprocating)

What will be the result of using too hot a spark plug?

When installing a magneto on an engine, the

When testing a magneto distributor block for electrical leakage, which of the following pieces of test equipment should be used?

How does the ignition system of a gas turbine engine differ from that of a reciprocating engine?

Which of the following are included in a typical turbine engine ignition system? 1. Two igniter plugs. 2. Two transformers. 3. One exciter unit. 4. Two intermediate ignition leads. 5. Two low-tension igniter leads. 6. Two high-tension igniter leads.

The numbers appearing on the ignition distributor block indicate the

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

How are most radial engine spark plug wires connected to the distributor block?

The electrical circuit from the spark plug back to the magneto is completed by grounding through the

Which of the following statements regarding magneto switch circuits is NOT true?

When performing a magneto ground check on an engine, correct operation is indicated by

What will be the effect if the spark plugs are gapped too wide?

At what RPM is a reciprocating engine ignition switch check made?

If an aircraft ignition switch is turned off and the engine continues to run normally, the trouble is probably caused by

What is the approximate position of the rotating magnet in a high-tension magneto when the points first close?

What component of a dual magneto is shared by both ignition systems?

Spark plugs are considered worn out when the

In reference to a ‘Shower of Sparks' ignition system,

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

The secondary coil of a magneto is grounded through the

The capacitor-type ignition system is used almost universally on turbine engines

When using a timing light to time a magneto to an aircraft engine, the magneto switch should be placed in the

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

The spark occurs at the spark plug when the ignition's

(1) The platinum and iridium ground electrodes used on fine wire spark plugs are extremely brittle and can be broken if they are improperly handled or adjusted. (2) When gapping massive-electrode spark plugs, a wire gauge should be inserted between the center and ground electrodes while moving the ground electrode in order to avoid setting the gap too close.

What is a result of a ‘flashover' in a distributor?

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

Why do turbine engine ignition systems require high energy?

The magnetic circuit of a magneto consists of a permanent multi-pole rotating magnet. The core is made of

When will the voltage in the secondary winding of a magneto, installed on a normally operating engine, be at its highest value?

What is the purpose of using an impulse coupling with a magneto?

Is A safety feature usually employed in direct-cranking starters

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

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

What would be the result if a magneto breaker point mainspring did not have sufficient tension?

The amount of voltage generated in any magneto secondary coil is determined by the number of windings and by the

Alignment of the marks provided for internal timing of a magneto indicates that the

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

Which of the following statements most accurately describes spark plug heat range?

Thermocouples are usually inserted or installed on the

When does battery current flow through the primary circuit of a battery ignition coil?

Magneto pole shoes are generally made of

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

The constrained-gap igniter plug used in some gas turbine engines operates at a cooler temperature because

In order to turn a magneto off, the primary circuit must be

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

What likely effect would a cracked distributor rotor have on a magneto?

If a spark plug lead becomes grounded, the

If the ground wire of a magneto is disconnected at the ignition switch, the result will be the

In a high-tension ignition system, a primary capacitor of too low a capacity will cause

Ignition check during engine run-up indicates a slow drop in RPM. This is usually caused by

The type of ignition system used on most turbine aircraft engines is

Advantages of dual ignition in aircraft engines include providing a backup magneto system, increasing the output power of the engine, and