Ch. 5 engine starting systems faa powerplant book (20 questions)

In older reciprocating aircraft inertia starting systems, energy for cranking the engine is stored in the:

flywheel

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

Direct current series-wound motor

The starter gear section on the typical direct cranking starter used for starting a large reciprocating aircraft engine:

uses a sun and planetary gear reduction system to transfer the energy of the starter motor to the engine flywheel

What assists the starter jaw in retracting after the starter motor is disengaged on a typical direct cranking reciprocating engine starter?

Return Spring

Reciprocating engine starters:

have starting limits which restrict continuous cranking to one minute

In automatic starting systems on small reciprocating engine aircraft:

a starter solenoid is energized to allow current to flow to the starter motor

If a starter commutator on a reciprocating engine is found with a glazed surface:

the contacting surface should be cleaned with sandpaper

What is used to polish commutators or slip rings?

Very fine sandpaper

What is the purpose of the second set of windings in a turbine engine starter-generator?

One winding is for starting, the second is for generator applications

The purpose of the undercurrent relay in a starter-generator system is to:

disconnect power from the starter-generator and ignition when sufficient engine speed is reached

In a turbine engine starter-generator system, in which circumstance may it be necessary to use the stop/start switch?

Hung Start

At which point does the drive coupling of a turbine engine air starter stop turning?

When the engine is shut down

(Refer to Figure 5-1) With power applied to the bus bar, what wire supplies standby power to the starter relay contact?

4

(Refer to Figure 5-1) When an external power source is connected to the aircraft:

the battery can not be connected to the bus

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

a rotor actuator switch

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

inspection of a magnetic chip detector

Which is the basic component of pneumatic starter?

An axial flow turbine

Pneumatic starters contain a turbine which is driven by air and rotates the reduction gear train through a sprag clutch. The clutch is:

automatically engaged and automatically disengaged

Inspection of pneumatic starters by maintenance technicians usually includes checking the:

oil level and magnetic drain plug condition

On many turbine powered aircraft, the start valve works in conjunction with what other valve to supply the correct flow of air to the pneumatic starter?

Pressure-regulating and shutoff valve