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Right choice is (d) 0.8 kg/l

Easiest explanation: For performance calculations, airliner manufacturers use a density of jet FUEL around 0.8 kg/l. There are some exceptions, for example, Embraer in its MANUAL for the E195 AIRCRAFT USES an ADOPTED fuel density of 0.811 kg/l.

Correct option is (d) 38 °C

Explanation: Jet-A has a flash POINT of 38 °C. The fuel has been used in the UNITED States since the 1950S but is usually not available OUTSIDE the United States.

Right choice is (c) 60

To EXPLAIN: Jet fuel is DISPENSED from a nozzle having a rectangular OPENING larger 60 mm DIAGONALLY. This is done so that it does not fit into avgas PORTS. The nozzle called a J spout or duckbill.

Right choice is (c) JP-1

The explanation is: JP-1 is military jet fuel. Military ORGANIZATIONS all AROUND the world use a different classification system of JP numbers. Some of these military fuels are almost identical to their CIVILIAN counterparts.

Right choice is (d) Qatar Airways

For EXPLANATION: Qatar Airways was the first airline to OPERATE a commercial flight on a 50:50 blend of synthetic GAS to Liquid jet fuel and conventional jet fuel. It was a six HOUR flight from London to DOHA.

Correct option is (c) CONFORMAL FUEL TANK

For explanation: Conformal fuel tanks are not an internal tank. However, bladder tank, integral tank and TIP tank are all internal tanks. The conformal fuel tanks extend either the range or ENDURANCE of the aircraft.

The correct option is (a) 1,000 ppm

The explanation: Jet fuel contains sulfur up to 1,000 ppm. This MAKES the fuel more lubricative and thus it does not currently REQUIRE a LUBRICITY ADDITIVE as all pipeline diesel fuels require.

Right answer is (b) True

For EXPLANATION I would SAY: True, around 30% of the WORLDWIDE consumption of jet fuel is in the United STATES. The worldwide consumption of jet fuel more than tripled in 30 years.

Correct option is (b) F-44

For EXPLANATION I would say: F-44 is the NATO code for JP-5. The JP-5 is also known as NCI-C54784. It is a yellow colored, kerosene based jet FUEL developed for use in aircrafts stationed ABOARD aircraft carriers.

The correct option is (a) WET wings

The BEST I can explain: INTEGRAL fuel TANKS are also called wet wings. Wet wing refers to an aircraft wing structure that is sealed and is used as a fuel TANK.

The correct answer is (B) Radio

Explanation: Radar systems make use of radio waves. These are systems used to DETERMINE parameters such as the range, ANGLE or velocity of DIFFERENT objects.

Right option is (b) True

The explanation is: True, in an aircraft, the wing TANKS are used preferentially. This is because putting the HEAVY fuel DIRECTLY inside the SOURCE of LIFT, reduces the stress on the wings during takeoff and flight.

Correct CHOICE is (d) MILITARY

Easiest explanation: EXTERNAL tanks are common on modern military aircraft. They are auxiliary externally mounted fuel tanks and are usually expendable and often jettison able.

Right option is (c) Pulse

Explanation: MODERN WEATHER radars being USED in aircrafts are usually pulse based Doppler radars. These radars provide ENHANCED features such as detection of rain droplets in addition to the existing features.

The correct choice is (b) 25

Easiest explanation: In Canada, the 5 cm weather radar systems use angles RANGING from 0.3 to 25 degrees. The SCANNING PROCESS is usually completed within 5 to 10 minutes to have data within a range of 15 KM above the ground.

Correct answer is (B) Microwave

To explain I would SAY: The weather radars USED in aircrafts emit directional pulses of microwave radiation. The aircraft uses an ONBOARD CAVITY magnetron in order to send these waves to the intended target.

Right option is (a) X-band

To elaborate: The 3cm X-band radar system is USED only for short-range UNITS. Typical applications INCLUDE radar, satellite communication, and wireless computer NETWORKS.

Correct CHOICE is (c) MILLISECOND

For EXPLANATION: The duration of the listen cycle is on the order of a millisecond. This duration is about thousand times longer than the pulse duration.

Correct option is (c) UNITED Kingdom

The best EXPLANATION: The cavity magnetron used in radar systems was developed in United Kingdom. The magnetron allowed the creation of comparatively smaller systems with sub-meter RESOLUTION.

The correct choice is (B) True

To elaborate: True, radar returns are generally described by some color or level on an aircraft radar display. The color scheme for such displays ranges between BLUE to green and red to magenta. The former INDICATING weak returns and the latter indicating STRONG returns.

Correct answer is (d) EXTREMELY heavy precipitation

Easy explanation: On a radar display, magenta indicates extremely heavy precipitation. These NUMBERS in a verbal REPORT, INCREASE with the SEVERITY of returns.

The correct choice is (a) Level 1

Explanation: In aviation world, Level 1 indication refers to a green radar return. This level indicates CHANCES of REDUCED visibility caused DUE to SMALL amount of precipitation along with some minor turbulence.

The CORRECT answer is (b) Level 3

Explanation: Level 3 may cause structural damage to the aircraft. This level indicates heavy PRECIPITATION which in turn may lead to the possibility of THUNDERSTORMS and severe TURBULENCE.

Right answer is (c) 10

To ELABORATE: The NEXRAD is a 10 radar. For a wavelength of 5 cm, an UNAMBIGUOUS velocity range of 12.5 to 18.75 meter/second is produced, whereas in NEXRAD the unambiguous velocity range would get doubled.

The correct answer is (a) False

For explanation I would SAY: False, in a uniform RAINSTORM MOVING EASTWARDS, a radar beam that is pointing west will see the raindrops moving towards itself. However, a beam pointing east will see the raindrops moving away.

Correct ANSWER is (a) Pulse repetition frequency

To explain I would SAY: PRF refers to Pulse repetition frequency. In some SYSTEMS, two alternating pulse repetition frequencies are used which ALLOW a GREATER Doppler range.

Correct option is (d) CANADIAN

Easiest EXPLANATION: The constant altitude plan position INDICATOR (CAPPI) has been developed by Canadian researchers. It is a RADAR display that provides a horizontal cross SECTION of data at a constant altitude.

The CORRECT answer is (b) TRUE

Best explanation: True, the VAD WIND Profile system is to display the estimates of speed and direction of the HORIZONTAL winds. These estimates are displayed on a screen and the system may also be referred to as VWP.

Correct answer is (a) Target

To explain: The reflectivity of a RADAR beam depends on the DIAMETER of the target. For example, SNOWFLAKES are large but WEAKLY reflective, while on the other hand RAIN drops are small but highly reflective.

Correct option is (d) ARINC 708

To explain: The ARINC 708 is the PRIMARY specification for weather radar systems, using an AIRBORNE PULSE Doppler radar. Radar systems are an essential part of the aircraft and include weather radars, collision avoidance, ground proximity and other systems.

The CORRECT choice is (a) Estimated Time of Arrival

To explain I would say: ETA refers to the Estimated Time of Arrival. It is the estimated time at which an aircraft is expected to arrive at its destination. The ETA may change DUE to ADVERSE weather CONDITIONS or unexpected system failures.

The correct answer is (c) Empennage

Easiest explanation: In typical aircraft assembly and configuration METHODS, the empennage is formed by COMBINING separate vertical and HORIZONTAL stabilizers. The COMBINED system is installed at the rear end of an aircraft on its TAIL assembly.

The correct answer is (b) True

Easy explanation: True, stabilators with roll CONTROL function are called tailerons, or rolling tails. Roll control is USUALLY a function of ailerons that are PLACED on the WINGS of an AIRCRAFT.

Correct answer is (b) Wide

To explain: The stabilator is a USEFUL device for CHANGING the aircraft balance within the wide LIMITS. It is also useful for mastering the stick FORCES.

Right ANSWER is (a) Movable

To explain I WOULD say: A stabilator is a fully movable aircraft stabilizer. The stabilator serves the usual FUNCTIONS of LONGITUDINAL STABILITY, control and other stick force requirements.

Correct choice is (a) Pitch

The best explanation: Supersonic flights required certain necessary upgrades in the aircraft structure so as to COUNTER balance the effects of supersonic travel. Thus, stabilators were introduced on such aircrafts in ORDER to OBTAIN SUFFICIENT pitch control.

Correct answer is (b) HORIZONTAL stabilizer

For EXPLANATION I would say: In order to maintain an aircraft’s LONGITUDINAL balance, MANUFACTURERS use horizontal stabilizers. These stabilizers work so as to reduce the summation of pitch MOMENTS around the aircraft’s center of gravity to zero.

The correct OPTION is (d) Crosswind

The best explanation: Crosswinds are the winds across the line of flight. Such winds CAUSE the windward side of an aircraft to generate a GREATER AMOUNT of lift and drag.

The correct choice is (c) Tail

The EXPLANATION is: A stabilator may ALSO be REFERRED to as an all MOVING. ALTERNATIVELY, it may also be called an all flying tail. It is fitted in the tail section of an aircraft at its rear end.

Correct answer is (a) False

Explanation: False, fin is a vertical STABILIZER, whereas the tail plane is a HORIZONTAL stabilizer. There can ALSO be other arrangements of the AIRCRAFT EMPENNAGE.

Right CHOICE is (b) Gravity

Easy explanation: The longitudinal stability in a TAILLESS aircraft is ACHIEVED by designing the aircraft such that its aerodynamic center is behind the center of gravity. It is generally done by modifying the WING design of an aircraft.