Baker's Powerplant Oral Section Questions and
100%Verified Answers 2024 Graded A+
,1. What are the units in an engine fuel flow system?: a transmitter and an
indicator for each engine
2. Where is the fuel flow transmitter located?: it s mounted in the fuel line
between the engine driven pump and the carburetor.
3. What type of readout is indicated on a fuel flow system?: The indicator is
calibrated to record the fuel dlow in pounds per hour.
4. What exactly does a mass fuel flow transmitter measure?: The density
mass of the fuel that flows through it.
5. What is the reason for a monitoring the fuel flow?: Fuel consumption, , the
operator can determine from fuel flow indication where the engine is operating
on correct fuel-air mixture for given a power setting.
6. What does a manifold pressure gauge indicate?: It measures the absolute
pressure in the intake manifold.
7. What would be the effect of a broken manifold pressure gauge line?:
Indicate the atmospheric pressure.
8. What does the engine tachometer indicate?: It indicates crankshaft speed
(RPM)
9. What is the most likely cause of a oscillating tachometer?: A kind in the
cable 10. What type of tachometer is used in multi-engine airplanes ?:
Alternating current tachometer generator
11. What are the turbine engine tachometers designed to indicate?: indicafted
percent of engine rotor (shaft) RPM.
12. what is the EPR on a turbine engine?: It's the ratio between total turbine
discharge pressure to total inlet pressure. it is an indication of thrust.
13. what is the electric source for a cylinder head temperature gauge?: a
thermocouple attached to the cylinder head.
14. Where is a carburetor air temperature bulb located ?: It's located in the air
intake passage to the engine.
15. How can a turbine engine EGT be checked without operaring the
engine?-
: By checking the resistance of the thrmocouples and circuits
16. What is the typical acceptance ressitance of a cylinder head
thermocouple cable?: 2-8 ohms
17. What are the main categories of engine fire protection systems?: Spot-
Detection, Continues-loops, and flame detector.
18. Name an example of spot-detection type systems?: thermal couple and
thermal switch
, .
19. Name example of continuous-loop detection systems?: Kiddle and Fenwal
20 When using a thermocouple type fire detector. what happens if the
engine overheats slowly?: Thermocouple depends the rate of temperature
rise, it will not give warning.
21. How many thermocouples are required for engine fire detection?:
Depends on the size of fire zone and total circuit resistance
22. Describe the operation of a kiddle continuous-loop fire detector system.
Two wires will complete the circuit when the middle ceramic core heats up.
23. where does a thermocouple fire detector system get its electrica power
to operate?: Thermocouple provides power to close relay at certain temperature
and powered from the aircraft electrical systems.
24. How are thermal switches electrically connected in the circuit?: Parallel
with each other and in series with the warning light.
25. what is the most common causes of false fire warning in a continues-
loop system?: kinks, dents, or crushed sensing elements.
26. Will a continuous-loop fire detector still indicate the presence of a fire if
the element is broken in two?: Yes
27. What two method are used to discharge fire extinguishing agents?:
Mechanical and electrical
28. what method is used to release the fire extinguishing agent in a typical
turbine engine fire protection?: Discharge valve that are operated by electrically
discharged cartridges (squibs)
29. What method is used to determine proper fire extinguisher containe
pressure?: Read the container gauge, it prescribes minimum and maximum range
30. what is the color marking used to identify fire extinguisher?: brown tag wit
a black diamond row
31. what method other than the pressure gauge is used to identified low
agent pressure?: low pressure warning light
32. What purpose of the yellow and red discharge plugs (disks) in a turbine
engine fire extinguishing system?: yellow-activated by pilot; red-thermal
activated 33. What are two methods commonly used to distributed fire
distinguishing agent to engine?: a perforated tube & discharge nozzels
34. How does the fire extinguishing agent put out the fire?: it dilutes the
atmosphere so that it will not support combustion.
35. what does HRD stand for?: High rate of discharge
36. How is the fire extinguishing distributed from a HRD system?: from a
open-end tube
100%Verified Answers 2024 Graded A+
,1. What are the units in an engine fuel flow system?: a transmitter and an
indicator for each engine
2. Where is the fuel flow transmitter located?: it s mounted in the fuel line
between the engine driven pump and the carburetor.
3. What type of readout is indicated on a fuel flow system?: The indicator is
calibrated to record the fuel dlow in pounds per hour.
4. What exactly does a mass fuel flow transmitter measure?: The density
mass of the fuel that flows through it.
5. What is the reason for a monitoring the fuel flow?: Fuel consumption, , the
operator can determine from fuel flow indication where the engine is operating
on correct fuel-air mixture for given a power setting.
6. What does a manifold pressure gauge indicate?: It measures the absolute
pressure in the intake manifold.
7. What would be the effect of a broken manifold pressure gauge line?:
Indicate the atmospheric pressure.
8. What does the engine tachometer indicate?: It indicates crankshaft speed
(RPM)
9. What is the most likely cause of a oscillating tachometer?: A kind in the
cable 10. What type of tachometer is used in multi-engine airplanes ?:
Alternating current tachometer generator
11. What are the turbine engine tachometers designed to indicate?: indicafted
percent of engine rotor (shaft) RPM.
12. what is the EPR on a turbine engine?: It's the ratio between total turbine
discharge pressure to total inlet pressure. it is an indication of thrust.
13. what is the electric source for a cylinder head temperature gauge?: a
thermocouple attached to the cylinder head.
14. Where is a carburetor air temperature bulb located ?: It's located in the air
intake passage to the engine.
15. How can a turbine engine EGT be checked without operaring the
engine?-
: By checking the resistance of the thrmocouples and circuits
16. What is the typical acceptance ressitance of a cylinder head
thermocouple cable?: 2-8 ohms
17. What are the main categories of engine fire protection systems?: Spot-
Detection, Continues-loops, and flame detector.
18. Name an example of spot-detection type systems?: thermal couple and
thermal switch
, .
19. Name example of continuous-loop detection systems?: Kiddle and Fenwal
20 When using a thermocouple type fire detector. what happens if the
engine overheats slowly?: Thermocouple depends the rate of temperature
rise, it will not give warning.
21. How many thermocouples are required for engine fire detection?:
Depends on the size of fire zone and total circuit resistance
22. Describe the operation of a kiddle continuous-loop fire detector system.
Two wires will complete the circuit when the middle ceramic core heats up.
23. where does a thermocouple fire detector system get its electrica power
to operate?: Thermocouple provides power to close relay at certain temperature
and powered from the aircraft electrical systems.
24. How are thermal switches electrically connected in the circuit?: Parallel
with each other and in series with the warning light.
25. what is the most common causes of false fire warning in a continues-
loop system?: kinks, dents, or crushed sensing elements.
26. Will a continuous-loop fire detector still indicate the presence of a fire if
the element is broken in two?: Yes
27. What two method are used to discharge fire extinguishing agents?:
Mechanical and electrical
28. what method is used to release the fire extinguishing agent in a typical
turbine engine fire protection?: Discharge valve that are operated by electrically
discharged cartridges (squibs)
29. What method is used to determine proper fire extinguisher containe
pressure?: Read the container gauge, it prescribes minimum and maximum range
30. what is the color marking used to identify fire extinguisher?: brown tag wit
a black diamond row
31. what method other than the pressure gauge is used to identified low
agent pressure?: low pressure warning light
32. What purpose of the yellow and red discharge plugs (disks) in a turbine
engine fire extinguishing system?: yellow-activated by pilot; red-thermal
activated 33. What are two methods commonly used to distributed fire
distinguishing agent to engine?: a perforated tube & discharge nozzels
34. How does the fire extinguishing agent put out the fire?: it dilutes the
atmosphere so that it will not support combustion.
35. what does HRD stand for?: High rate of discharge
36. How is the fire extinguishing distributed from a HRD system?: from a
open-end tube
