Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

51.

In a radar altimeter, the greater the frequency shift the further the distance traveled.(a) True(b) FalseThe question was asked during an interview for a job.Enquiry is from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

The correct ANSWER is (a) True

For explanation: True, the greater the FREQUENCY shift the further the distance TRAVELED. Such altimeters function by INTERPRETING the time taken by a radio signal, to reflect from the surface of earth back to the aircraft. This information is then USED to calculate the altitude of the aircraft.

52.

The Pitot tube is most commonly located on the wing assembly of an aircraft.(a) True(b) FalseThe question was posed to me in an online quiz.This interesting question is from Instrument Shop topic in portion Instrument Shop of Aircraft Maintenance

Answer»

The correct answer is (a) True

To elaborate: True, the Pitot tube is most commonly LOCATED on the wing assembly of an aircraft. The tube is PLACED in such a WAY that its opening is exposed to the RELATIVE wind so that maximum air contact TAKES place.

53.

Where is the static port mounted?(a) On the fuselage of an aircraft(b) On the nose of an aircraft(c) On the engine of an aircraft(d) On the tail of an aircraftI have been asked this question in homework.My enquiry is from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer»

Correct ANSWER is (a) On the fuselage of an aircraft

For explanation I would say: The static port is mounted on the fuselage of an aircraft. The port is LOCATED at such a POSITION where it can access the AIR FLOW in a relatively undisturbed area.

54.

Where is the alternative static port located?(a) Inside the wings of the aircraft(b) Inside the rudder of the aircraft(c) Inside the engine of the aircraft(d) Inside the cabin of the aircraftI got this question in class test.The above asked question is from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

Right choice is (d) INSIDE the cabin of the AIRCRAFT

The explanation: An ALTERNATIVE static port is located inside the cabin of the aircraft. The alternate port acts as a backup, in case the external static port(s) are BLOCKED.

55.

Which of the following is not determined using the pitot-static system?(a) Altitude(b) Mach Number(c) Thrust(d) AirspeedI got this question in an online quiz.My question is taken from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

The correct CHOICE is (c) THRUST

For explanation: Thrust is not determined using the pitot-static system. However, the other three parameters ALTITUDE, MACH number and AIRSPEED are determined using the pitot-static system.

56.

The two additional radial markings on the airspeed indicator, one red and one blue, are associated with potential __________(a) Engine Failure(b) Landing Gear Failure(c) Radar Failure(d) Altimeter FailureThis question was addressed to me during an internship interview.I need to ask this question from Instrument Shop topic in portion Instrument Shop of Aircraft Maintenance

Answer»

The correct option is (a) ENGINE Failure

Explanation: The two additional RADIAL markings on the AIRSPEED INDICATOR, ONE red and one blue, are associated with potential engine failure. The radial red line indicates Vmc and the radial blue line indicates VYSE.

57.

What is the difference between the pitot pressure and the static pressure called?(a) Atmospheric Pressure(b) Dynamic Pressure(c) Air Pressure(d) Cabin PressureThe question was asked in an internship interview.I need to ask this question from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

Right ANSWER is (B) Dynamic PRESSURE

For explanation: The difference between the pitot pressure and the static pressure is CALLED dynamic pressure. The greater the dynamic pressure, the higher is the AIRSPEED.

58.

When the aircraft is moving forward, air entering the Pitot tube is at a __________ pressure than the static line.(a) Equal(b) Lower(c) Greater(d) InfiniteI had been asked this question at a job interview.This interesting question is from Instrument Shop in section Instrument Shop of Aircraft Maintenance

Answer»

The CORRECT ANSWER is (C) Greater

The BEST I can explain: At an instant where the aircraft is moving forward, the air entering the aircraft’s Pitot tube will be at a greater pressure than the static line. This phenomenon in turn causes the diaphragm to flex thus moving the pointer.

59.

Which of the following refers to the speed for best rate of climb with the critical engine inoperative?(a) VFE(b) VNE(c) Vmc(d) VYSEThis question was posed to me in my homework.This is a very interesting question from Instrument Shop in portion Instrument Shop of Aircraft Maintenance

Answer»

The correct answer is (d) VYSE

The explanation is: VYSE refers to the SPEED for best rate of climb with the critical engine inoperative. It is INDICATED on the airspeed INDICATOR in multi-engine AIRCRAFT that include RADIAL markings on the ASI.

60.

Ram air enters the system through the __________(a) Pitot tube(b) Static tube(c) Engines(d) APU ExhaustI have been asked this question in a job interview.The question is from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

The correct choice is (a) Pitot TUBE

To explain: RAM air enters the SYSTEM through the Pitot tube. The tube MAY be blocked, because of dirt or failure to remove the pitot cover. Such blockage will prevent ram air from entering the system.

61.

A pilot of a jet airplane needs both an airspeed indicator and a Mach meter.(a) True(b) FalseThis question was posed to me in examination.My question comes from Instrument Shop topic in section Instrument Shop of Aircraft Maintenance

Answer»

The correct answer is (a) True

Explanation: True, a pilot of a jet airplane, NEEDS both an airspeed INDICATOR and a Mach meter. The ASI should INCLUDE a red-and-white striped pointer that AUTOMATICALLY moves to indicate the applicable speed limit at a particular instant of TIME.

62.

TAS increases as altitude increases.(a) True(b) FalseI have been asked this question in an online quiz.The doubt is from Instrument Shop topic in portion Instrument Shop of Aircraft Maintenance

Answer» CORRECT answer is (a) TRUE

Explanation: True, TAS refers to True AIRSPEED, which increases as ALTITUDE increases, as air density decreases. Similarly, TAS decreases as altitude decreases.
63.

Which of the following is not a unit of measurement for airspeed?(a) Kilometers per hour(b) Knots(c) Miles per hour(d) PascalThe question was asked by my college professor while I was bunking the class.My query is from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

The correct option is (d) Pascal

To elaborate: Pascal is not a UNIT of measurement for airspeed. HOWEVER, kilometers per hour, knots and MILES per hour, are all used to indicate airspeed. The airspeed might be DISPLAYED in two units as well.

64.

What is the full form of CAS?(a) Constant airspeed(b) Continuous airspeed(c) Calibrated airspeed(d) Comparative airspeedThis question was addressed to me during an interview for a job.Asked question is from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer»

The CORRECT choice is (c) Calibrated airspeed

Explanation: CAS refers to Calibrated airspeed. This airspeed is corrected for installation and instrument errors. Further, an airspeed CALIBRATION CHART is available for any remaining errors.

65.

Static pressure is measured from the __________(a) Static port(b) Static scale(c) Pitot scale(d) Pitot tubeThis question was addressed to me during an internship interview.I'm obligated to ask this question of Instrument Shop topic in section Instrument Shop of Aircraft Maintenance

Answer»

The CORRECT answer is (a) STATIC PORT

For explanation: Static pressure is measured from the static port. The pitot-static system is a system of pressure-sensitive INSTRUMENTS.

66.

What will the ASI pointer read, if both the Pitot tube and the static system are blocked?(a) Zero(b) Positive Infinite(c) No reading(d) Negative InfiniteThe question was asked at a job interview.My doubt is from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer»

The correct option is (a) Zero

Easiest explanation: If both the Pitot TUBE and the STATIC system are blocked, the ASI POINTER will read zero on its SCALE. However, if the static ports are blocked but the Pitot tube remains open, the ASI will continue to operate, but will give INACCURATE readings.

67.

If the pitot opening is blocked, but the drain hole is open, it will cause the system pressure to drop to __________(a) Critical pressure(b) Low pressure(c) Ambient pressure(d) Atmospheric pressureThe question was asked in exam.This question is from Instrument Shop topic in section Instrument Shop of Aircraft Maintenance

Answer»

Correct answer is (c) Ambient pressure

The explanation is: If the PITOT opening is blocked, but the DRAIN hole is open, it will cause the system pressure to drop to ambient pressure. Ambient pressure on an OBJECT refers to the pressure of the SURROUNDING MEDIUM.

68.

Which of the following determines when an aircraft will stall?(a) Angle of pitch(b) Angle of incidence(c) Angle of bank(d) Angle of attackI got this question in my homework.I would like to ask this question from Instrument Shop in chapter Instrument Shop of Aircraft Maintenance

Answer»

The CORRECT answer is (d) Angle of attack

For explanation: The angle of attack DETERMINES when an aircraft will STALL. An aircraft can stall at any SPEED, so monitoring the airspeed ALONE will not prevent a stall.

69.

The Lift Reserve Indicator provides a measure of the amount of __________ being generated, by an aircraft.(a) Lift(b) Thrust(c) True speed(d) Mach speedI got this question in an interview.Query is from Instrument Shop topic in chapter Instrument Shop of Aircraft Maintenance

Answer»

Right choice is (a) LIFT

The explanation is: The Lift RESERVE INDICATOR provides a MEASURE of the amount of lift being generated, by an aircraft. The instrument USES a pressure differential system and provides the pilot a visual representation of reserve lifts available.

70.

An angle of attack indicator provides stall situational awareness.(a) True(b) FalseI got this question in an interview.My enquiry is from Instrument Shop topic in portion Instrument Shop of Aircraft Maintenance

Answer»

Right choice is (a) True

Easiest explanation: True, the ANGLE of attack indicator provides STALL SITUATIONAL awareness. It acts as a MEANS for monitoring the onset of the CRITICAL angle of attack.

71.

The PFD does not contain any mechanical parts.(a) True(b) FalseI got this question during an internship interview.This intriguing question comes from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer»

Right option is (a) True

Best explanation: True, the PFD does not CONTAIN any MECHANICAL parts. The primary flight display is RESPONSIBLE for merely displaying data from the underlying mechanical SYSTEMS.

72.

Which of the following is used only to determine airspeed?(a) Static pressure(b) Pitot pressure(c) Cockpit pressure(d) Cabin pressureI had been asked this question during an online exam.Query is from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer» RIGHT option is (B) Pitot pressure

Easy explanation: The pitot pressure is USED only to determine AIRSPEED. However, the static pressure is used in various other MEASUREMENTS.
73.

Mechanical gauges have been retained for backup purposes in the event of total __________(a) Electrical Failure(b) Mechanical Failure(c) Thermal Failure(d) Hydraulic FailureThe question was posed to me by my school teacher while I was bunking the class.The query is from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer» CORRECT option is (a) Electrical FAILURE

For EXPLANATION: Mechanical gauges have been retained for backup purposes in the EVENT of total electrical failure. They have not been completely eliminated from the cockpit, despite the onset of the PFD.
74.

What does the vertical speed indicator, indicate?(a) Rate at which the pressure changes(b) Rate at which the altitude changes(c) Rate at which the temperature changes(d) Rate at which the airspeed changesThis question was addressed to me in class test.Enquiry is from Instrument Shop in portion Instrument Shop of Aircraft Maintenance

Answer»

Correct choice is (c) RATE at which the temperature changes

Easy explanation: The vertical speed indicator indicates the rate at which the ALTITUDE changes. It is USUALLY represented with numbers in thousands of FEET per MINUTE.

75.

Which was the first general aviation manufacturer to add a PFD to the already existing MFD?(a) Boeing(b) Cirrus Aircraft(c) Airbus(d) Lockheed MartinThis question was addressed to me in quiz.Question is taken from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer»

The correct choice is (a) Boeing

Explanation: Cirrus Aircraft was the first GENERAL AVIATION manufacturer to add a PFD to the already existing MFD. Further, in 2003 the manufacturer MADE such displays standard equipment on their SR-series aircraft.

76.

Which of the following is not a necessary component of the PFD?(a) Altimeter(b) Turn coordinator(c) Airspeed indicator(d) FlapsThe question was posed to me during an online interview.I need to ask this question from Instrument Shop in portion Instrument Shop of Aircraft Maintenance

Answer»

The correct choice is (d) Flaps

The best EXPLANATION: Flaps is not a necessary component of the PFD. However, altimeter, airspeed indicator and TURN coordinator are all necessary COMPONENTS of the PFD., as described by the FAA.

77.

What is the full form of AMSL?(a) Altitude above mean sea level(b) Altitude above mean sea level(c) AOA above mean sea level(d) Airspeed above mean sea levelI have been asked this question in an internship interview.I'd like to ask this question from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

Correct answer is (B) Altitude above mean sea level

Explanation: AMSL refers to the altitude above mean sea level. The pitot SYSTEM in aircraft is used to measure the AMSL. This is because the pitot system is useful in TRACKING air pressure measurements, which are necessary to FIND AMSL.

78.

Which of the following is shown at the bottom of the PFD?(a) Airspeed Indicator(b) Heading display(c) Vertical Speed Indicator(d) Altitude IndicatorThis question was posed to me during an interview for a job.I'd like to ask this question from Instrument Shop topic in chapter Instrument Shop of Aircraft Maintenance

Answer»

The CORRECT ANSWER is (b) Heading display

For EXPLANATION: The heading display is shown at the bottom of the PFD. Airspeed indicator, vertical SPEED indicator and altitude indicator are displayed at different positions on the PFD.

79.

A measurement of “+4” on the vertical speed indicator indicates an ascent of __________(a) 200 feet per minute(b) 2000 feet per minute(c) 400 feet per minute(d) 4000 feet per minuteI had been asked this question in a national level competition.My enquiry is from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer»

The correct option is (d) 4000 feet per MINUTE

The explanation is: A measurement of “+4” on the vertical speed indicator indicates an ASCENT of 4000 feet per minute. Similarly, a measurement of “-1.5” indicates a DESCENT of 1500 feet per minute.

80.

Which of the following is not shown on the heading display?(a) Current heading(b) Airspeed(c) Thrust(d) Rate of turnThis question was posed to me in an interview.Asked question is from Instrument Shop topic in division Instrument Shop of Aircraft Maintenance

Answer»

Right answer is (b) Airspeed

Best EXPLANATION: Thrust is not SHOWN on the heading display. However, the heading display shows not only the CURRENT heading, but also the current rate of turn, current heading setting on the autopilot, and other INDICATORS.

81.

PFD does not use the pitot-static system.(a) True(b) FalseThis question was addressed to me in an international level competition.This intriguing question comes from Instrument Shop topic in portion Instrument Shop of Aircraft Maintenance

Answer»

Right option is (b) False

The explanation is: The PFD does not DIRECTLY use the pitot-static system; however it still uses the system to make ALTITUDE, airspeed and other MEASUREMENTS PRECISELY using other readings.

82.

Airbus proposed a common symbol system on the PFD and HUD with the __________(a) A380-800(b) A350-800(c) A350-1000(d) A330neoI got this question in an online interview.My doubt stems from Instrument Shop in division Instrument Shop of Aircraft Maintenance

Answer» RIGHT choice is (c) A350-1000

For explanation I WOULD say: Airbus proposed a common symbol system on the PFD and HUD with the A350-1000 AIRCRAFT. The A350-1000 when introduced was an ENGINEERING marvel, FEATURING improved aerodynamics and performance capabilities.