Explore topic-wise MCQs in Electrical Engineering.

This section includes 50 Mcqs, each offering curated multiple-choice questions to sharpen your Electrical Engineering knowledge and support exam preparation. Choose a topic below to get started.

1.

A mobile satellite array has usually how many elements?%!

A. 6
B. 88
C. 12
D. 14
Answer» E.
2.

AsiaSat I covers how many countries in Asia?%!

A. 38
B. 10
C. 28
D. 15
Answer» B. 10
3.

The owner of AsiaSat 2 is%!

A. Asia Satellite Telecommunications Company (ASTC)
B. Japan Satellite System (JSAT)
C. China Great Wall Industry Corporation
D. Singapore Satellite Commision
Answer» D. Singapore Satellite Commision
4.

Earth station uses what type of antenna%!

A. Despun antenna
B. Helical antenna
C. Toroidal antenna
D. Cassegrain antenna
Answer» E.
5.

A satellite beam that covers almost 42.4% of the earths surface.%!

A. Zone beam
B. Hemispheric beam
C. Spot beam
D. Global beam
Answer» E.
6.

*$_A satellite beam that covers almost 42.4% of the earths surface.?

A. Zone beam
B. Hemispheric beam
C. Spot beam
D. Global beam
Answer» E.
7.

*/*_The first Philippine Mabuhay satellite has how many channels??

A. 30
B. 24
C. 48
D. 50
Answer» B. 24
8.

*/*_The first Philippine Agila I will have how many transponders.?

A. 36
B. 48
C. 24
D. 12
Answer» B. 48
9.

*/*__________ detects the satellite signal relayed from the feed and converts it to an electric current, amplifies and lower its frequency.?

A. Horn antenna
B. LNA
C. Satellite receiver
D. Satellite dish
Answer» C. Satellite receiver
10.

*/*_The first satellite to receive and transmit simultaneously?

A. Intelsat I
B. Agila I
C. Syncorn I
D. Telstar I
Answer» E.
11.

*/*_The bandwidth of C-band satellite frequency band in U.S.?

A. 500 GHz
B. 1000 GHz
C. 1000 MHz
D. 500 MHz
Answer» E.
12.

*/*_INTELSAT stands for?

A. Intel Satellite
B. International Telephone Satellite
C. International Telecommunications Satellite
D. International Satellite
Answer» D. International Satellite
13.

*/*_VSAT was made available in?

A. 1979
B. 1981
C. 1983
D. 1977
Answer» B. 1981
14.

%_As the height of a satellite orbit gets lower, the speed of the satellite ___________._%

A. Increases
B. Decreases
C. Remains the same
D. None of the above
Answer» B. Decreases
15.

_ What is the delay time for satellite transmission from earth transmitter to earth receiver?$?

A. 0.5 s
B. 1.0 s
C. 5 ms
D. 0.25 ms
Answer» B. 1.0 s
16.

_ What height must a satellite be placed above the surface of the earth in order for its rotation to be equal to earth’s rotation?$?

A. 26,426.4 miles
B. 27,426.4 miles
C. 23,426.4 miles
D. 22,426.4 miles
Answer» E.
17.

_ Point on the satellite obits closest to the earth.$?

A. Apogee
B. Perigee
C. Prograde
D. Zenith
Answer» C. Prograde
18.

_ What is the frequency range of C-band?$?

A. 8.5 to 12.5 GHz
B. 3.4 to 6.425 GHz
C. 12.95 to 14.95 GHz
D. 27.5 to 31 GHz
Answer» C. 12.95 to 14.95 GHz
19.

_ Repeaters inside communications satellites are known as$?

A. Trancievers
B. Transponders
C. Transducers
D. TWT
Answer» C. Transducers
20.

_ What circuit is responsible in activating and deactivating adjacent antenna elements in a mobile satellite array?$?

A. Radial divider
B. Divider/combiner
C. Radial combiner
D. Radial multiplexer
Answer» B. Divider/combiner
21.

_ The location of AsiaSat I.$?

A. 105.5Àö East
B. 151.5Àö East
C. 115.5Àö East
D. 170.5Àö East
Answer» B. 151.5√Ä√∂ East
22.

_ What band does VSAT first operate?$?

A. L-band
B. X-band
C. C-band
D. Ku-band
Answer» D. Ku-band
23.

__Considered as the unsolved problem in satellite system__

A. Coverage
B. Cost
C. Access
D. Privacy
Answer» E.
24.

___________ is a satellite that rotates around the earth in a low-altitude elliptical or circular pattern.$?

A. Geosynchronous satellite
B. Nonsynchronous satellite
C. Prograde satellite
D. Retrograde satellite
Answer» C. Prograde satellite
25.

What is the approximate path loss from satellite-to-earth station?$?

A. 100 dB
B. 150 dB
C. 175 dB
D. 200 dB
Answer» E.
26.

A method of multiple accessing where a given RF channel bandwidth is divided inot smaller frequency band.$?

A. CDMA
B. ANIK-D
C. TDMA
D. FDMA
Answer» E.
27.

What is a device that detects both vertically and horizontally polarized signals simultaneously?$?

A. Orthomode transducer
B. Crystal detector
C. Optoisolator
D. Isomode detector
Answer» B. Crystal detector
28.

A satellite batter has more power but lighter.$?

A. Lithium
B. Leclanche
C. Hydrogen
D. Magnesium
Answer» B. Leclanche
29.

The switching from one element to the other element in a typical mobile satellite array.$?

A. Series
B. Radial
C. Matrix
D. Shunt
Answer» E.
30.

What kind of battery used by older satellites?$?

A. Lithium
B. Leclanche
C. Hydrogen
D. Magnesium
Answer» D. Magnesium
31.

A helical antenna is used for satellite tracking because of$?

A. Circular polarization
B. Maneuverability
C. Beamwidth
D. Gain
Answer» B. Maneuverability
32.

Is a loss of power of a satellite downlink signal due to earth’s atmosphere.$?

A. Atmospheric loss
B. Path loss
C. Radiation loss
D. RFI
Answer» C. Radiation loss
33.

Is a loss of power of a satellite downlink signal due to earth’s atmosphere.?

A. Atmospheric loss
B. Path loss
C. Radiation loss
D. RFI
Answer» C. Radiation loss
34.

Which of the following is the first commercial satellite?

A. Early Bird
B. Telstar
C. Explorer
D. Courier
Answer» C. Explorer
35.

What is the first passive satellite transponder?

A. Sun
B. Early Bird
C. Score
D. Moon
Answer» C. Score
36.

The frequency of Ku band for satellite communications.

A. 6/4 GHz
B. 14/11 GHz
C. 12/14 GHz
D. 4/8 GHz
Answer» C. 12/14 GHz
37.

The smallest beam of a satellite antenna radiation pattern

A. Zone beam
B. Hemispheric beam
C. Spot beam
D. Global beam
Answer» D. Global beam
38.

What kind of battery panels are used in some advance satellites

A. Germanium based panels
B. Silicon based panel
C. Galium Phosphate solar panel array
D. Galium Arsenide solar panel array
Answer» E.
39.

How may satellite orbital slots are requested by the Philippine Government from ITU?

A. 2
B. 4
C. 6
D. 8
Answer» D. 8
40.

The earth area covered by a satellite radio beam.

A. Beamwidth
B. Bandwidth
C. Footprint
D. Zone
Answer» D. Zone
41.

A satellite signal transmitted from a satellite transponder to earth’s station.$

A. Uplink
B. Downlink
C. Terrestrial
D. Earthbound
Answer» C. Terrestrial
42.

Collects very weak signals from a broadcast satellite

A. Helical antenna
B. Satellite dish
C. LNA
D. TWT
Answer» C. LNA
43.

In a typical mobile satellite array antenna if three elements are activated, how many elements are deactivated?

A. 3
B. 11
C. 5
D. 9
Answer» C. 5
44.

Which of the following is the first active satellite?

A. Echo I
B. Telstar I
C. Early Bird
D. Sputnik I
Answer» E.
45.

A satellite cross-link means

A. Earth-to-satellite link
B. Satellite-to-earth link
C. Satellite-to-satellite link
D. None of these
Answer» D. None of these
46.

Is the geographical representation of a satellite antenna radiation pattern

A. Footprint
B. Spot
C. Earth
D. Region
Answer» B. Spot
47.

The radiation patterns of earth coverage antennas have a beamwidth of approximately

A. 21Àö
B. 5Àö
C. 17Àö
D. 35Àö
Answer» D. 35√Ä√∂
48.

What is the local oscillator (mixer) frequency of the satellite with an uplink frequency in GHz band?

A. 3500 MHz
B. 4500 MHz
C. 2225 MHz
D. 2555 MHz
Answer» D. 2555 MHz
49.

Satellite engine uses

A. Jet propulsion
B. Ion propulsion system
C. Liquid fuel
D. Solar jet
Answer» C. Liquid fuel
50.

Most mobile satellite array uses ___________ in transforming 50 to 150 Ω impedance.#

A. Stub
B. Balun
C. Quarter-wavelength transformer
D. Microstrip tapers
Answer» D. Microstrip tapers