MCQ in Navigational Aids and Radar Systems Part 2 | ECE Board Exam

This is the Multiple Choice Questions in Navigational Aids and Radar Systems Part 2 of the Series as one of the Electronics Systems and Technologies Examination topic. In Preparation for the ECE Board Exam make sure to expose yourself and familiarize in each and every questions compiled here taken from various sources including but not limited to past Board Exam Questions in Electronics Systems and Technologies scope, Electronics Communications Books, Journals and other Electronics Communications References.

MCQ Topic Outline included in ECE Board Exam Syllabi

• MCQ in Electronic Aids to Radio Navigation
• MCQ in Distance Measuring Equipment
• MCQ in Automatic Direction Finder
• MCQ in Instrument Landing System
• MCQ in Microwave Landing System
• MCQ in Ground Proximity Warning System
• MCQ in Traffic Alert and Collision Avoidance System
• MCQ in Navigation by using Satellites
• MCQ in GPS, GLONASS, Galileo Positioning System
• MCQ in Radar
• MCQ in Radar Frequency Bands
• MCQ in Radar Functions and Roles
• MCQ in Radar Parameters: PRT, PRF, the Duty Cycle, Average Power
• MCQ in Doppler Effect
• MCQ in Radar Beacons
• MCQ in Range Equations

Start Practice Exam Test Questions Part 2 of the Series

⇐ MCQ in Navigational Aids and Radar Systems Part 1 | ECE Board Exam

51. The determination of the Position and Velocity of a Moving Vehicle on land, at sea, in the air, or space.

A. Detection

B. Ranging

C. Navigation

D. None of the above

52. Instrument displaying rate of ascend and descend in feet per minute.

A. ILS

B. MLS

C. VAR

D. VOR

53. In which frequency band does marine radar operates?

A. C

B. L

C. S

D. Ku

54. What is the common navigational aids present on aircraft panels?

A. VAR

B. VOR

C. MTI

D. ILS.

55. The radar system can determine a number of properties of a distant object except

A. Motion

B. Range

C. Speed

D. Color

56. A radio air to navigation that provides distance information between an airborne interrogator and a ground-based transponder.

A. ILS

B. Omega

C. GPS

D. DME

57. The marker beacon operates at a carrier frequency of

A. 75 MHz

B. 112 MHz

C. 50 MHz

D. 90 MHz

58. The color of the light for the inner marker is

A. Black

B. Yellow

C. White

D. Blue

59. An error in navigation that varies with altitude of vehicle often related to polarization

A. Altitude error

B. Site error

C. Night effect

D. Octantal error

60. An error occurring mainly at night when ionosphere reflection is at maximum.

A. Altitude error

B. Site error

C. Night effect

D. Octantal error

61. An error caused from reflection from obstruction close to the site of the navigational aids

A. Altitude error

B. Site error

C. Night effect

D. Octantal error

62. Which band does Omega navigation system operates?

A. VLF

B. UHF

C. VHD

D. HF

63. The outer marker in an ILS is approximately _____ from the runway end.

A. 1000 km

B. 5000 km

C. 1.5 km

D. 2 km

64. It is the direction relative to True North.

A. Bearing

B. Relative bearing

C. Magnetic heading

D. Azimuth

65. In radar, the object whose range, direction and velocity is to be measured.

A. Receiver

B. Objective

C. Target

D. Cross-section

66. An agency of UN that formulates standards and recommendation practices including navigational aids for civil aviation

A. ICAO

B. ATO

C. FCC

D. ITU

67. The lighted spot of a radar display caused by target echoes.

A. Pixel

B. Phosphor

C. Pulse

D. Detail

68. The equivalent size of a radar target, in terms of perfectly conducting flat plate oriented toward the receiver.

A. Receiver

B. Object

C. Target

D. Cross-section

69. The navigator fixes his position on a map or chart by observing known visible landmarks. Using the earth’s surface beneath (compass, straightedge, maps, protractors, etc.)

A. Celestial navigation

B. Navigation by pilotage

C. Dead reckoning

D. Electronic navigation

70. It is accomplished by measuring the angular position of celestial bodies.

A. Celestial navigation

B. Navigation by pilotage

C. Dead reckoning

D. Electronic navigation

71. The position of the craft at any instant of time is calculated from the previously determined position, the speed of motion and the time elapsed.

A. Celestial navigation

B. Navigation by pilotage

C. Dead reckoning

D. Electronic navigation

72. An angle in the horizontal plane with respect to a reference usually expressed in degrees measured clockwise from the reference.

A. Bearing

B. Relative bearing

C. Absolute bearing

D. Azimuth

73. Bearing is to North usually magnetic North in the Navigation system and measured in degrees counterclockwise from the true north.

A. Bearing

B. Relative bearing

C. Absolute bearing

D. Azimuth

74. The maximum altitude above sea level at which an aircraft can maintain level flight under Standard Air conditions.

A. Absolute altitude

B. Absolute ceiling

C. Absolute value

D. None of the above

75. Is the process of using radio signal themselves to determine the relative direction between the transmitter sending out the signals and the receiver picking them out.

A. RDF

B. ILS

C. DME

D. MTI

76. A ground station specifically intended for RDF service is called ______ that operates in the 200 – 415 kHz band.

A. Non-directional Beacon (NDB)

B. Directional Beacon System (DBS)

C. Distance Measuring Equipment (DME)

D. All of the above

77. National radio navigation system replaced after World War 2 by the omnirange system. It consisted of segmented quadrants broadcasting Morse Code “A” (dot-dash) and “N” (dash-dot) signals in opposing quadrants so that pilots could orient their position relative to a “beam” broadcasting a steady tone, and a Morse Code station identifier. Using a “build-and-fade” technique, a pilot could (ideally) pinpoint his location by the strength or weakness of a signal.

A. VOR

B. Adcock range

C. OMEGA

D. LORAN

78. The rate at which ascending air cools and descending air warms, given no heat is added or taken away. The rate for dry air is based on 5.4° F per 1000′ altitude (1° per 100 meters); saturated rates vary with barometric pressures and temperatures, and must be adjusted for accuracy.

A. Flight level

B. Elevon

C. Decision height

D. Adiabatic Lapse Range

79. Distinguished by frequencies 1850, 1900, 1950 kHz and by a slight variation in pulse repetition frequency.

A. LORAN-A

B. OMEGA

C. DECCA

D. VOR

80. Of the three axes in flight, this specifies the side-to-side movement of an aircraft on its vertical axis, as in skewing.

A. Roll

B. Pitch

C. Yaw

D. None of the above

81. A panel instrument that gauges the rate of climb or descent in feet-per minute (fpm).

A. MTI

B. VSI

C. MSI

D. All of the above

VSI – Vertical Speed Indicator

82. With respect to the operation of aircraft, the height at which point a decision must be made during an instrument approach to either continue the approach or to execute a missed approach [abort].

A. Lowest safe altitude

B. Minimum safe altitude

C. Decision height

D. Vertical range

83. The VHF frequencies used for the localizer are in the range

A. 30 to 300 MHz

B. 108.1 to 111.9 MHz

C. 70 to 150 MHz

D. None of the above

84. The maximum take-off (Gross) weight of an aircraft divided by its wing area.

A. Wind loading

B. Net weight

C. Wing loading

D. None of the above

85. The combined vhf omnirange navigation system and tactical air navigation is

A. TACAN

B. VORTAC

C. DECCA

D. LORAN-C

86. A panel instrument, often as simple as a tiny ball in a vertical tube, indicating subtle pitch movements of an aircraft.

A. Ailerons

B. Radio altimeter

C. Variometer

D. DME

87. X-band ranges from

A. 2.5 to 19 GHz

B. 8 to 12 GHz

C. 18 to 27 GHz

D. 12 to 14 GHz

88. An airborne transmitter that responds to ground-based interrogation signals to provide air traffic controllers with more accurate and reliable position information than would be possible with “passive” radar; may also provide air traffic control with an aircraft’s altitude.

A. Interrogator

B. Cockpit

C. Transponder

D. None of the above

89. Airspace surrounding designated airports wherein ATC provides radar vectoring, sequencing, and separation on a full-time basis for all IFR and participating VFR aircraft.

A. VMC

B. TRSA

C. RATCF

D. EFCS

90. The path of aircraft traffic around an airfield, at an established height and direction.

A. Road map

B. Pattern

C. Line of ascend

D. None of the above

91. A number representing the ratio of the speed of an object to the speed of sound in the surrounding air or medium in which it is moving.

A. X number

B. A-scope number

C. Radar equation

D. Mach

92. A navigation system which utilizes timing differences between multiple low-frequency transmissions to provide accurate latitude/longitude position information to within 50′.

A. LORAN

B. OMEGA

C. DECCA

D. MEGA

93. A circular radio antenna, either in the open or in a streamlined, teardrop housing, remotely turned 360° to fine-tune a station in league with other radio-directive devices.

A. Radar antenna

B. Beam antenna

C. Loop antenna

D. Long wire antenna

94. One nautical mile per hour, about 1.15 statute miles (6,080′) per hour.

A. Tong

B. Knot

C. Purunt

D. Tonk

95. A radar-based system allowing ILS-equipped aircraft to find a runway and land when clouds may be as low as 200 feet (or lower for special circumstances).

A. MLS

B. ILS

C. TACAN

D. VAR

96. Governing the conduct of flight under instrument meteorological conditions.

A. VMC

B. IFR

C. HSI

D. MSA

97. Speed of flight at or greater than Mach 5.0.

A. Supersonic

B. Hypersonic

C. Infrasonic

D. Sonic

98. Speed of flight at or greater than Mach 1.0; literally, faster than the speed of sound.

A. Supersonic

B. Hypersonic

C. Infrasonic

D. Sonic

99. A facility established to provide air traffic control service to aircraft operating on IFR flight plans within controlled airspace and principally during the en route phase of flight.

A. VMC

B. IMC

C. ARTCC

D. FADEC

100. An instrument or device that measures the air speed of an aircraft through an air mass.

A. ASI

B. ADI

C. RMP

D. None of the above

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