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

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

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

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

What is the relationship between distributor and crankshaft speed of aircraft reciprocating engines?

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

The purpose of staggered ignition is to compensate for

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

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

As an aircraft engines speed is increased, the voltage induced in the primary coil of the magneto

A spark plugs heat range is the result of

When using an electric starter motor, current usage

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

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

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.

A magneto ignition switch is connected

Spark plugs are considered worn out when the

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

Which of the following are distinct circuits of a high-tension magneto? 1. Magnetic. 2. Primary. 3. E-gap. 4. P-lead. 5. Secondary.

Which malfunctions will allow the igniters to operate when tested but be inoperative during a start attempt? 1. Conductor No. lo broken. 2. Conductor No. li broken. 3. Ignition relay inoperative. 4. Conductor No. 12 broken.

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

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

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

If staggered ignition timing is used, the

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

(Refer to Figure 5.) Which malfunctions will allow the igniters to operate normally during start but be inoperative when tested? 1. Conductor No. 14 broken. 2. Conductor No. lo broken. 3. Conductor No. 15 broken. 4. Conductor No. 12 broken.

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?

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

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

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

In reference to a Shower of Sparks ignition system, (1) the retard breaker points are designed to keep the affected ignition system operating if the advance breaker points should fail during normal engine operation (after start). (2) the timed opening of the retard breaker points is designed to prevent engine kickback during start. Regarding the above statements.

Spark plug heat range is determined by

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

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

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

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

(Refer to Figure 5.) The type of system depicted is capable of operating with

Aircraft magneto housings are usually ventilated in order to

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

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

(Refer to Figure 5.) With power applied to the bus bar, what wire supplies standby power to the starter relay contact?

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

Why do turbine engine ignition systems require high energy?

What is the difference between a low-tension and a high-tension engine ignition system?

Capacitance after firing of a spark plug is caused by

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

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

The purpose of a safety gap in a magneto is to

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

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

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

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

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?

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

Shielding is used on spark plug and ignition wires

Igniter plugs used in turbine engines are subjected to high intensity spark discharges and yet they have a long service life because they

Alignment 01 the marks provided or internal timing of a magneto indicates that the

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

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

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

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

Defective spark plugs will cause the engine to run rough at

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

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

Which of the following would be cause for rejection of a spark plug?

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

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

Which of the following are advantages of dual ignition in aircraft engines? 1. Gives a more complete and quick combustion of the fuel. 2. Provides a backup magneto system. 3. Increases the output power of the engine. 4. Permits the use of lower grade fuels. 5. Increases the intensity of the spark at the spark plugs.

The electrical circuit from the magneto is completed by through the

If the ground wire of a magneto is disconnected at the ignition switch, the result will be the affected magneto will be isolated and the engine will run on the

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

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

Thermocouples are usually inserted or installed on the

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

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

If a spark plug lead becomes grounded, the

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