unit 3

Question 1

What is the term for the process of producing voltage in a conductor when it passes through a magnetic field?

Answer 1

Electromagnetic induction

Question 2

The difference between DC and AC is that DC

Answer 2

has a constant polarity; AC changes direction at regular intervals

Question 3

On a simple AC generator, which item takes the current from the slip rings to operate the electrical device?

Answer 3

Brushes

Question 4

Which part of a generator acts as an automatic switching device, changing alternating current to direct current?

Answer 4

Commutator

Question 5

One function of the CSD governor system is to

Answer 5

equalize the load between generators operating in parallel

Question 6

Which component ensures the CSD output speed is always at the desired RPM to adjust and maintain the desired 400 Hz?

Answer 6

Frequency and load controller

Question 7

What provides the PTO shaft that is used to drive the CSD?

Answer 7

Engine adapter

Question 8

How are the thermocouples connected in an averaging type of EGT circuit?

Answer 8

Parallel

Question 9

The slide-type resistor in the EGT circuit is used to….

Answer 9

calibrate the EGT indicator in the flight station

Question 10

What is the primary input power to the main ignition system?

Answer 10

28VDC

Question 11

How many sets of imbedded magnets does the rotor contain?

Answer 11

3

Question 12

What does the EGT/T5.6 thermocouples consist of

Answer 12

both alumel and chromel

Question 13

Which unit of AC ignition system develops 20,000 volts?

Answer 13

Transformer

Question 14

A simple DC ignition system consist of vibrator,

Answer 14

ignition plugs, and transformer

Question 15

How many independent circuits are within an F100-PW-100 engine ignition system?

Answer 15

3

Question 16

An F100-PW-100 engine augmentor igniter plugs ionizes at a minimum rate of how many sparks per second?

Answer 16

30

Question 17

Which statement best describes the air turbine (impingement) starter?

Answer 17

Has the advantages of less weight and fewer moving parts than other starters

Question 18

The two air source requirements for a pneumatic starter to operate properly are sufficient

Answer 18

volume and pressure

Question 19

The JFS is basically a

Answer 19

small gas turbine engine

Question 20

Which item initially rotates the JFS?

Answer 20

Hydraulic motor

Question 21

Which type of combustion chamber does the JFS use

Answer 21

Annular

Question 22

What engine section houses the JFS combustion section?

Answer 22

Turbine plenum

Question 23

Which item on the JFS provides pads for mounting the fuel atomizer assembly?

Answer 23

Turbine plenum

Question 24

The F-15 secondary power system does not include the

Answer 24

CSD

Question 25

Which component provides an electrical safety cutoff for the JFS if the power turbine accelerates to a 110 percent overspeed condition?

Answer 25

Power turbine overspeed switch

Question 26

On the F-15 secondary power system CGB, how are the isolation decouplers extended?

Answer 26

Hydraulically

Question 27

Oil is supplied to the F-15 JFS through the

Answer 27

CGB oil system

Question 28

On an F-15, the power to start the engines begins with the JFS and continues through the CGB to the

Answer 28

AMAD

Question 29

On the F-15 secondary power system, what is used to stop the JFS starting cycle when the aircraft engine has accelerated to starter cutout speed?

Answer 29

50 percent engine cutout switch assembly