7/26/2019 Jet Engine System Class Test -1 2016
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CLASS TEST-1 SUBJECTSJET ENGINE SYSTEM BATECH-7 A &B
SEM.-IVTotal Marks-20 at!-1"#02#201$ TIME-$0 MINUTES
1. When the engine is accelerated, energy must befurnished to
the turbine in excess of that necessary tomaintain a
a. Constant rpm.b. Constant pressure.c. Constant volume.d.
Constant temperature.
2. The fuel system must bea. Supply fuel so that the engine can
be easily started
on the ground and in the air.b. Inected into the combustion
chambers in a
combustible condition during engine starting andthat combustion
must be sustained !hile theengine is accelerating to its normal
idling speed.
c. "espond occurs during a rapid acceleration.d. All of the
above
#. The general causes of vapor loc$ area. The lo!ering of the
pressure on the fuel.b. %igh fuel temperatures.c. &xcessive
fuel turbulence.d. All of the above.
'. The vapor poc$ets formed by this prematurevapori(ation
restrict the fuel flo! through units !hichare designed to handle
li)uids rather than gases. Theresulting partial or complete
interruption of the fuel flo!is calleda. Vapor lock.b. Control
loc$c. %ydraulic loc$.d. *ll of the above.
+. apor loc$ can become serious enough toa. -loc$ the fuel flo!
completely and stop the engine.b. &ven small amounts of vapor
in the inlet line
restrict the flo! to the enginedriven pump.c. "educe its output
pressure.d. All of the above.
/. &lectronic engine controls have allo!eda. Increases in
controlling the metered fuel flow
to the engine.b. 0ecreases in controlling the metered fuel flo!
to
the engine.c. Constant in controlling the metered fuel flo! to
the
engine.d. *ll of the above.
. The basic groups of as turbine engine fuel controlscan bea.
%ydromechanical.b. *s 3a4 or %ydromechanical5electronic.c. *s 3b4
or 6ull *uthority 0igital &ngine Control.d. As (c) or Full
Authority igital !lectronics
Control.
7. 6*0&C meansa. 6ull *uthority 0igital &lectrical
Control.b. 6ull *utomatic 0igital &lectronics Control.
c. Full Authority igital !ngine Control.d. 6ull *utomatic
0igital &lectronics Control.
8. 6ull *uthority 0igital &ngine Control system has
a. * selfmonitoring, selfoperating.b. * redundant 9 failsafe
setup.c. * comprises of a digital computer and the ot
accessories 3that control all the aspects of aircengine
performance4
d. All of the above.
1:. 6ull *uthority 0igital &ngine Control system hasa.
*digital electronic control system able to
autonomously control the engineb. Throughout its !hole operating
range in both
normal and fault conditions.c. * selfmonitoring,
selfoperating.d. All of the above.
11. The fuel control can sense many different inputs sasa. ;o!er
lever position, engine rpm for each spoob. Compressor inlet
pressure and temperaturec. -urner pressure, compressor discharge
pressurd. All of the above.
12. 6uel entering the fuel control unit first passes througa.
"#$micron filter.b. #:micron filterc. 2:micron fi lterd. +:micron
filter
1#. *;< engine that uses the aircraft fuel system to supfuel
to the fuel control. *n electric mayused to supply fuel under
pressure to the control.a. =ain fuel pumpsb. %oost pump.c. Shutoff
valved. >one of the above.
1'. Which type of valve maintains a constant pressure dacross
the metering valve by bypassing fuel to pump inlet so that metered
flo! is proportionametering valve area?a. ifferential pressure
valveb. "elief valvec. Chec$ valved. *ll of the above
1+. &&C meansa. &ngine &lectronic control.b.
!lectronic engine controls.c. &lectrical engine controls.d.
&ngine &lectrical controls.
&'%!CIV! *'!&I+,
1. 0ra! the fuel system of aircraft et engine and !rites
thecomponent.(- marks)
