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CLASS TEST-3 SUBJECTSJET ENGINE SYSTEMBATECH-6 SEM.-IV Total Marks-20Dat-!"0# "20$# TIME-%# MINUTES

1. FADEC meansa. &'ll a't(or)t* +),)tal ltro)s

otrolb. Fuel authority digital system controlc. Full authority digital engine controld. All the above

2. Electronic engine control have allowedtoa. Irass ) otroll), t(

/tr+ 'l 1o to t( ,)

b. Decreases in controlling themetered fuel ow to the engine

c. Constant in controlling the meteredfuel ow to the engine

d. one of the above

!. Full authority digital engine control hasa. "elf monitoring# self o$eratingb. A redundant and fail safe set u$c. A com$rises of a digital com$uter

and other accessories+. All t( ao4

%. &he fuel system may be

a. "u$$ly fuel so that engine can beeasily started on the ground and air

b. 'n(ected into the combustionchambers in a combustible conditionduring engine starting and thecombustion must be sustainingwhile the engine is accelerating toits normal idle s$eed

c. )oth a * b are correct+. All t( ao4

+. &he basic grou$s of gas turbine enginefuel controls can bea. ,ydro mechanical fuel controlb. ,ydro mechanical-electricalc. FADEC

+. All t( ao4

. FADEC system hasa. A digital electronic control system

able to autonomously the engineb. &hroughout its o$erating range bo

normal * fault conditionsc. /nly 1 is correct+. All t( ao4

0. &he fuel control can sense many in$u

such asa. ower lever $ositionb. Engine r$m for each s$oolc. Com$ressor inlet $ressure*

tem$erature# burner $ressure#com$ressor discharge $ressure

+. All t( ao4

. Fuel entering the fuel control unit 3rst$asses through aa. $0 /)ro 5ltrb. 24 micron 3lterc. %4 micron 3lterd. +4 micron 3lter

5. A6 engine that uses the a-c fuelsystem to su$$ly fuel to the fuelcontrola. Boostr '/b. 7ain $um$c. "huto8 valved. one of the above

14. 9hich ty$e of valve maintainsconstant $ressure dro$ across themetering valve by$assing fuel to the$um$ so that metered ow is$ro$ortional to metering valve area

1

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a. D)7rt)al rss'r 4al4b. "huto8 valvec. :elief valved. one

11. EEC meansa. Eltro) ,) otrolb. Engine electronic controlc. Electrical engine controld. Engine electrical control

12. Fuel ow from the metering valveout of the FC6 # through the sonoloidshuto8 valve and on to the atomi;einitial ow through thea. "econdary no;;le only. 8r)/ar* o99l ol*c. /nly 1 is correctd. )oth 1 * 2 are correct

1!. &y$es of 3lters used in ty$icalengine

a.

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b. At t( lost o)t ) t( 'ls*st/.

c. At any $oint in the system lowersthan the carburetor strainer.

d. All of the above

22. Fuel cross>feed systems are used inaircraft to

a. urge the fuel tan=s.b. ettison fuel in an emergency.. Ma)ta) a)rrat sta)l)t*.+. All of the above

2!. 9hich of the following turbine fuel

3lters has the greatest 3ltering actionof any $resent>day 3lter ty$e@a. M)ro 5ltr.

b. lain screen mesh 3lter.c. 9afer screen 3lter.d. one of the above

2%.BBBBBB has individual ow dividera. "im$le. D'l

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!+. &he fuel system must bea. "u$$ly fuel so that the engine can

be easily started on the ground andin the air.

b. 'n(ected into the combustionchambers in a combustible conditionduring engine starting and thatcombustion must be sustained whilethe engine is accelerating to itsnormal idling s$eed.

c. :es$ond occurs during a ra$idacceleration.

+. All o t( ao4

!. Electronic engine controls havealloweda. Irass ) otroll), t(

/tr+ 'l 1o to t( ,).b. Decreases in controlling the

metered fuel ow to the engine.c. Constant in controlling the metered

fuel ow to the engine.d. All of the above.

!0. &he basic grou$s of as turbine

engine fuel controls can bea. ,ydromechanical.b. As GaH or

,ydromechanical-electronic.c. As GbH or Full Authority Digital

Engine Control.

+. As => or &'ll A't(or)t* D),)tEltro)s Cotrol.

!. Full Authority Digital Engine Contsystem hasa. A

digital electronic control systemable to autonomously control theengine

b. &hroughout its whole o$eratingrange in both normal and faultconditions.

c. A self>monitoring# self>o$erating.+. All o t( ao4.

!5. &he fuel control can sense ma

di8erent in$uts such asa. ower lever $osition# engine r$m feach s$ool

b. Com$ressor inlet $ressure atem$erature

c. )urner $ressure# com$ressdischarge $ressure

+. All o t( ao4.

%4. 9hat is the $rimary $ur$ose of theoil to fuel heat echanger@

a. Cool the fuel.. Cool t( o)l.c. De>aerate the oil.d. )oth GaH and GcH are correct

%