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Which statement is correct regarding relation between kelvin k fahrenheit f ? [ Aptitude Licence ]

Question 55-1 : I is incorrect ii is correct i is correct ii is correct i is incorrect ii is incorrect i is correct ii is incorrect

Admin .fahrenheit = 1 8 x c + 32.kelvin = c + 273 15 exemple 155 I is incorrect, ii is correct.I is incorrect, ii is correct.

Which of these statements are correct or incorrect .1 +15° celsius = 288 15° ?

Question 55-2 : I is correct ii is correct i is incorrect ii is correct i is incorrect ii is incorrect i is correct ii is incorrect

Admin .fahrenheit = 1 8 x c + 32.kelvin = c + 273 15 exemple 159 I is correct, ii is correct.I is correct, ii is correct.

The correct relation is ?

Question 55-3 : 0 45 kg = 1 lb 4 5 kg = 1 lb 1 kg = 4 5 lb 1 kg = 0 45 lb

Cqb15 february 2012..1 kg = 2 2 lbs.0 45 kg = 1 lb exemple 163 0.45 kg = 1 lb0.45 kg = 1 lb

A pressure of 1013 25 hpa is corresponding to ?

Question 55-4 : 14 5 psi et 29 92 inhg 1 45 psi et 29 92 inhg 14 5 psi et 28 87 inhg 1 45 psi et 28 87 inhg

Admin .a pressure of 1013 25 hpa is corresponding exactly to 14 69596432068 psi and 29 92 inches of mercury exemple 167 14.5 psi et 29.92 inhg.14.5 psi et 29.92 inhg.

Given .q = charge coulombs .u = potential difference between the plates volt ?

Question 55-5 : Q = c u q = u²/c q = c/u q = u/c

Chrism .should u not read v instead to comply with standard notation . .it should but we do not write the questions and we do not modify them this is the official wording .coulomb the quantity of electricity transported in 1 second by a current of 1 ampere .c is the capacitance and u is the stored energy exemple 171 Q = c.uQ = c.u

20 bar is approximately equal to ?

Question 55-6 : 300 psi 10 psi 200 psi 40 psi

Admin .1 psi pound per square inch = 0 07 bar .1 bar = 15 psi exemple 175 300 psi.300 psi.

The relation between c and k is . c celsius° k kelvin ?

Question 55-7 : K = c + 273 15 c k = 273 15 c = 0 8 k + 1 123 c = 273 + k

Admin .fahrenheit = 1 8 x c + 32.kelvin = c + 273 15 exemple 179 K = c + 273,15K = c + 273,15

A pressure of 200 bar is equivalent to approximately ?

Question 55-8 : 3000 psi 300 psi 30 psi 3 psi

Admin .1 psi pound per square inch = 0 07 bar .1 bar = 15 psi exemple 183 3000 psi.3000 psi.

Changes in temperature of the fuel affect its density volume and dielectric ?

Question 55-9 : A decreases in volume increases in density and increases in er a decreases in volume decreases in density and decreases in er an increases in volume increases in density and increases in er an increases in volume decreases in density and decreases in er

Revised ecqb03 july 2016 .warning this question also exists at the examm with the end statement an increase in temperature causes .in this case answer is an increase in volume decrease in density and decrease in er .mnemonic .decrease in temperature = d i i.increase in temperature = i d d exemple 187 A decreases in volume, increases in density and increases in er.A decreases in volume, increases in density and increases in er.

On a multi engine aircraft a synchroscope provides ?

Question 55-10 : An automatic and/or a visual system to synchronize the propellers rotation speeds a visual system to synchronize the propellers rotation speeds an automatic system to synchronize the propellers rotation speeds that any given blade of an engine propeller is in the same relative position as the corresponding blade of the propeller on the master engine

Cqb15 may 2012 ..on a multi engined aircraft a synchronizing system ensures the propeller speeds are all the same this is achieved by an electrical system that compares speed signals from engine mounted generators out of balance signals using one engine as a master signal are automatically corrected by electrically trimming the engine speeds until all signals are equal exemple 191 An automatic and/or a visual system to synchronize the propellers rotation speeds.An automatic and/or a visual system to synchronize the propellers rotation speeds.

The parameters used to represent thrust are .1 n1 low pressure shaft speed .2 ?

Question 55-11 : 1 4 1 3 2 3 2 4

Ecqb03 july 2016 exemple 195 1, 4.1, 4.

Which statement about fuel flow are correct or incorrect .i fuel flow may be ?

Question 55-12 : I is correct ii is correct i is incorrect ii is incorrect i is correct ii is incorrect i is incorrect ii is correct

Cqb15 may 2012..units used for fuel flow when measured by volume per hour are . liters/hour. us gallons/hour.units used for fuel flow when measured by mass per hour . kilogrammes/hour. pounds/hour exemple 199 I is correct, ii is correct.I is correct, ii is correct.

In a vibration monitoring system a filter .1 erases any output which is normal ?

Question 55-13 : 1 is correct 2 is correct 1 is incorrect 2 is incorrect 1 is incorrect 2 is correct 1 is correct 2 is incorrect

Revised ecqb03 july 2016 ..the gas turbine aircraft engine vibration indicating system features include engine c s rotation frequency measurement with two independent measuring channels vibration level measurement with multiple engine mounted piezoelectric sensors using digital broadband filters on each vibration sensor or digital monitoring narrow band filters on c s main harmonics frequencies as well as a comparison of measured and extreme limits of vibration 'excessive vibration' and 'vibration limit' signals formed when limits are exceeded .. no specific unit is displayed for a vibration monitoring system exemple 203 1 is correct, 2 is correct.1 is correct, 2 is correct.

Torque measurement is based on ?

Question 55-14 : Twist of the torque shaft of a known length pt7/pt2 pt2/pt7 change in frequency between torque shaft and reference shaft

Admin .torque can also be determined by measuring the change in phase between the torque shaft and the reference shaft exemple 207 Twist of the torque shaft of a known length.Twist of the torque shaft of a known length.

For an engine vibration indicator vibration monitoring system ?

Question 55-15 : No specific unit is displayed rotor imbalance is shown as a percent of n1 rotor imbalance is mesured by pounds per unit of time vibrations are proportional to torque

Feedback cqb15 may 2012 .. no specific unit is displayed for a vibration monitoring system exemple 211 No specific unit is displayed.No specific unit is displayed.

Given .p = power t = torque n = rpm.the correct relationship is ?

Question 55-16 : P=tn p=t/n p=tn² p=t/n²

exemple 215 P=tnP=tn

A unit commonly used to calculate fuel flow consumption is ?

Question 55-17 : Kg/h h/kg kg/m3 lb/m3

The following units are used for fuel flow when measured by mass per hour . kilogrammes/hour. pounds/hour.the following units used for fuel flow when measured by volume per hour . liters/hour. us gallons/hour exemple 219 Kg/h.Kg/h.

The pressure is measured by ?

Question 55-18 : A force per unit area a force on a volume a volume on a force a volume per unit area

exemple 223 A force per unit area.A force per unit area.

Which of the following components converts heat into a mechanical movement ?

Question 55-19 : A bi metallic strip a thermo couple a resistance a spring

Admin . 1031.a bimetallic strip is used to convert a temperature change into mechanical displacement the strip consists of two strips of different metals which expand at different rates as they are heated usually steel and copper or in some cases steel and brass the strips are joined together throughout their length by riveting brazing or welding the different expansions force the flat strip to bend one way if heated and in the opposite direction if cooled below its initial temperature .the metal with the higher coefficient of thermal expansion is on the outer side of the curve when the strip is heated and on the inner side when cooled exemple 227 A bi-metallic strip.A bi-metallic strip.

A torque may be expressed in ?

Question 55-20 : N m n/m watt rpm

The following units are used for torque . newton meters. inch or foot pounds exemple 231 N.mN.m

The different types of tachometers are .1 electrical.2 mechanical.3 ?

Question 55-21 : 1 2 3 1 2 1 3 2 3

Admin .the following types of tachometers are used in aviation . mechanical rotating magnet . electrical three phase tacho generator . electronic impulse measurement with speed probe and phonic wheel exemple 235 1, 2, 3.1, 2, 3.

By integrating a flow with respect to time we obtain ?

Question 55-22 : A volume or a mass a pressure the diameter of the line the cross section of the line

Cqb15 august 2012 ..the following units are used for fuel flow when measured by mass per hour . kilogrammes/hour. pounds/hour.the following units used for fuel flow when measured by volume per hour . liters/hour. us gallons/hour exemple 239 A volume or a mass.A volume or a mass.

On a multi engine aircraft a synchroscope provides ?

Question 55-23 : Qualitative indication of the difference in speed between the engines quantitative indication in rpm of the difference in speed between the engines qualitative indication of the difference in vibration between the engines quantitative indication in hz of the difference in speed between the engines

Cqb15 august 2012 ..synchroscope example of display .beechcraft baron 58 cockpit

The operating principle of an oil torque meter is .1 axial movement is ?

Question 55-24 : 1 is correct 2 is correct 1 is incorrect 2 is incorrect 1 is correct 2 is incorrect 1 is incorrect 2 is correct

Revised ecqb03 july 2016 exemple 247 1 is correct, 2 is correct.1 is correct, 2 is correct.

On an twin engined aeroplane the synchroscope uses the following principle ?

Question 55-25 : It measures the frequency difference between the two engines driven alternators a piezoelectric sensor measures the vibrations on each engine it mathematically subtracts the rpm of both engines it mathematically subtracts the vibrations of both engines

Revised ecqb03 july 2016 ..the purpose of a synchroscope is to reduce structural vibration and noise the synchronizing system ensures that the propeller speeds are all the same this is achieved by an electrical system that compares speed signals from engine mounted generators engines driven alternators out of balance signals using one engine as a master signal are automatically corrected by electrically trimming the engine speeds until all signals are equal exemple 251 It measures the frequency difference between the two engines driven alternators.It measures the frequency difference between the two engines driven alternators.

An oil torque meter makes use of the followings phenomenon ?

Question 55-26 : Axial movement is generated when hellicaly cut gears are used to transfer power from one shaft to another as power is increased the torque shaft expands the torque shaft is connected to the engine only axial movement is generated when cylindricaly cut gears are used to transfer power from one shaft to another as power is increased the torque shaft twists the torque shaft is connected to both the engine and the propeller's reduction gear box

Cqb15 august 2012 exemple 255 Axial movement is generated when hellicaly cut gears are used to transfer power from one shaft to another.Axial movement is generated when hellicaly cut gears are used to transfer power from one shaft to another.

On an electronic display unit the source of the vibrations sensed by an engine ?

Question 55-27 : Can be displayed n1 or n2 can be displayed only for n1 can be displayed only for n2 can not be displayed

exemple 259 Can be displayed (n1 or n2).Can be displayed (n1 or n2).

On an electronic display unit the following n1 parameters can be displayed .1 ?

Question 55-28 : 1 2 3 1 1 3 2 3

Ecqb03 july 2016 exemple 263 1, 2, 3.1, 2, 3.

On a n1 indicator the maximum n1 admissible ?

Question 55-29 : May be greater than 100% is 100% is always lower than 100% can not be reached

exemple 267 May be greater than 100%.May be greater than 100%.

Concerning thrust measurement the n1 is defined as the ?

Question 55-30 : Low pressure shaft speed high pressure shaft speed egt epr

exemple 271 Low pressure shaft speed.Low pressure shaft speed.

Engine speed is most commonly displayed as a ?

Question 55-31 : Percentage of a maximum engine speed percentage of a minimum engine speed a pressure ratio fan rotation speed

exemple 275 Percentage of a maximum engine speed.Percentage of a maximum engine speed.

A fuel flow meter is located ?

Question 55-32 : In the high pressure fuel line to the burners at the outlet of the high pressure fuel pump between the booster pump and the engine in the return line to the tanks

Ecqb03 july 2016 exemple 279 In the high pressure fuel line to the burners.In the high pressure fuel line to the burners.

Fuel flow can be expressed in .1 kg per m3.2 lb per m3.3 lb per hour.4 kg per ?

Question 55-33 : 3 4 1 2 1 4 2 3

Ecqb03 july 2016 ..the following units are used for fuel flow when measured by mass per hour . kilogrammes/hour. pounds lb /hour.the following units used for fuel flow when measured by volume per hour . liters/hour. us gallons/hour exemple 283 3, 4.3, 4.

Total fuel consumption is obtained by ?

Question 55-34 : Integrating the fuel flow with respect to time subtracting the initial fuel quantity from the remaining fuel integrating the fuel flow with respect to distance subtracting the remaining fuel from the initial fuel quantity

Ecqb03 july 2016 exemple 287 Integrating the fuel flow with respect to time.Integrating the fuel flow with respect to time.

Which of these statements about fuel quantity measurement are correct or ?

Question 55-35 : 1 is correct 2 is correct 1 is incorrect 2 is incorrect 1 is incorrect 2 is correct 1 is correct 2 is incorrect

Ecqb03 july 2016 exemple 291 1 is correct, 2 is correct.1 is correct, 2 is correct.

Which of these statements about the fuel mass unit is correct ?

Question 55-36 : 1 t = 2200 lb 1 t = 2000 lb 1 t = 450 lb 1 t = 4500 lb

Admin .1 kg = 2 2 pounds lbs exemple 295 1 t = 2200 lb1 t = 2200 lb

Given .q = charge coulombs .u = potential difference between the plates volt ?

Question 55-37 : C = q / u c = u / q c = q x u c = u² / q

Ecqb03 july 2016..c is the capacitance coulomb is the quantity of electricity transported in 1 second by a current of 1 ampere and u is the stored energy exemple 299 C = q / uC = q / u

The value shown by the indicator of a vibration monitoring system is 4 this is ?

Question 55-38 : A level of vibration without any unit 4 % 4 hz 4 % or 4 hz depending on the aircraft

Admin . 1029.the gas turbine aircraft engine vibration indicating system features include engine c s rotation frequency measurement with two independent measuring channels vibration level measurement with multiple engine mounted piezoelectric sensors using digital broadband filters on each vibration sensor or digital monitoring narrow band filters on c s main harmonics frequencies as well as a comparison of measured and extreme limits of vibration 'excessive vibration' and 'vibration limit' signals formed when limits are exceeded . no specific unit is displayed for a vibration monitoring system exemple 303 A level of vibration without any unit.A level of vibration without any unit.

The types of sensors used in an engine vibration monitoring system may be .1 ?

Question 55-39 : 1 3 1 2 1 2 3 2

Ecqb03 july 2016 exemple 307 1, 3.1, 3.

On a twin engined aeroplane the synchroscope can consist of ?

Question 55-40 : A rotor fed by the alternator driven by the master engine and a stator fed by the alternator driven by the engine to by synchronised a piezoelectric sensor measuring the vibrations on each engine a computer that mathematically subtracts the rpm of both engines a computer that mathematically subtracts the vibrations of both engines

Ecqb03 july 2016..the purpose of a synchroscope is to reduce structural vibration and noise the synchronizing system ensures that the propeller speeds are all the same this is achieved by an electrical system that compares speed signals from engine mounted generators engines driven alternators out of balance signals using one engine as a master signal are automatically corrected by electrically trimming the engine speeds until all signals are equal .synchroscope example of display .beechcraft baron 58 cockpit exemple 311 A rotor fed by the alternator driven by the master engine, and a stator fed by the alternator driven by the engine to by synchronised.A rotor fed by the alternator driven by the master engine, and a stator fed by the alternator driven by the engine to by synchronised.

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