Tag: importance of transport system

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Questions Related to importance of transport system

Multiple choice evs - i communication and mass media understanding communication and impact of mass media satellites in communication importance of transport system artificial satellite

Match List-1 with List-2. 

List-1 List-2
a. Point to point communication e. RADAR
b. broadcast communication f. AM radio
c. Line of sight g. FM radio communication
d. Satellite communication h. Traditional telephony
i. Mobile telephony
j. TV

  1. a-h; b-f,g,j; c-e; d-i,j

  2. a-e; b-i,j; c-h; d-g,f

  3. a-f ; b-h,i,j; c-g; d-e

  4. a-g; b-f,g,j; c-e; d-i,j
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
(a-h): A point-to-point connection refers to a communications connection between two nodes or endpoints.
(b-f, g ,j): Reaches a wider range at faster speed.
(c-e) Line of sight is a type of propagation that can transmit and receive data only where transmit and receive stations are in view of each other without any sort of an obstacle between them.
(d-i, j) Signal transferring between the sender and receiver is done with the help of satellite.
Multiple choice evs - i communication and mass media understanding communication and impact of mass media satellites in communication importance of transport system artificial satellite

The frequency of transmission of a ratio station is $30\, MHz$. The wavelength of the waves transmitted by the centre will be- 

  1. $5$ meter

  2. $10$ meter

  3. $15$ meter

  4. $20$ meter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The wavelength lambda is calculated using the formula lambda = c / f, where c is the speed of light (3 * 10^8 m/s) and f is the frequency (30 MHz = 30 * 10^6 Hz). Thus, lambda = (3 * 10^8) / (3 * 10^7) = 10 meters.

Multiple choice evs - i communication and mass media understanding communication and impact of mass media satellites in communication importance of transport system artificial satellite

Long range transmission of TV-signal is done by

  1. space wave

  2. sky wave

  3. ground wave

  4. artificial satellite
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

TV-signal ( $30: MHz$ - $300:MHz$) are not reflected by ionosphere. Therefore, sky-wave propagation is not possible and similarly ground and space wave is also not feasible. Hence, they are transmitted to artificial satellite from where they are transmitted back to the Earth.

Multiple choice evs - i communication and mass media understanding communication and impact of mass media satellites in communication importance of transport system artificial satellite

What fraction of the surface area of earth can be covered to establish communication by one geostationary satellite?

  1. $\displaystyle\frac{1}{2}$

  2. $\displaystyle\frac{1}{3}$

  3. $\displaystyle\frac{1}{4}$

  4. $\displaystyle\frac{1}{8}$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

We uses three geostationary satellites placed at the vertices of an equilateral triangle, then the entire earth can be covered by the communication network, each satellite covers $1/3$ of the globe.

Multiple choice evs - i communication and mass media understanding communication and impact of mass media satellites in communication importance of transport system artificial satellite

A ground receiver station is receiving a signal at (a) 5 MHz and (b) 100MHz, transmitted from a ground transmitter at a height of 400m located at a distance of 125km. Identify whether it is coming via space wave or sky wave propagation or satellite transponder. Radius of earth = $6.4\times { 10 }^{ 6 }m$; maximum number density of electrons in ionosphere = ${ 10 }^{ 12 }{ m }^{ -3 }$ 


  1. $9MHz$

  2. $5MHz$

  3. $4MHz$

  4. All of these.
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Height of the ground transmitter $=30\ cm$
Range of transmission $=100\ km$
maximum distance covered by space wave propagation is
$d=\sqrt{2\ Rh}$
$=\sqrt{2\times 64\times 10^{6}\times 300}$
$=62\ km$
critical frequency for ionospheric propagation is, 
$F _{C}=9(N _{max})^{112}$
$=9(10^{12})^{112}$
$=9\times 10^{6}=9\ MHZ$
Multiple choice organisation of commerce and management tertiary and quaternary economic activities importance of transport system importance of transportation system introduction to transport and communication

______ are large consumers of space with the lowest level of physical constraints among transportation modes.

  1. Railways

  2. Maritime routes

  3. Air routes

  4. Road infrastructures
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Road infrastructure requires vast amounts of land and has fewer constraints on where it can be built compared to rail or air routes.

Multiple choice organisation of commerce and management tertiary and quaternary economic activities importance of transport system importance of transportation system introduction to transport and communication

Which of the following is an example of mass communication?

  1. Telephone

  2. Email

  3. Letter

  4. Newspaper
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mass communication involves reaching a large, diverse audience simultaneously. A newspaper is a traditional medium for this, whereas the others are typically point-to-point.

Multiple choice organisation of commerce and management tertiary and quaternary economic activities importance of transport system importance of transportation system introduction to transport and communication

______ mode of transportation is widely used to transport petroleum products, processed coal, drinking water, natural gas etc. from one place to another place among other modes.

  1. Pipeline Transport System

  2. Rope-way Transport System

  3. Water Transport System

  4. Canal system
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Pipelines are the most efficient and common method for transporting fluids and gases like petroleum, water, and natural gas over long distances.

Multiple choice organisation of commerce and management tertiary and quaternary economic activities importance of transport system importance of transportation system introduction to transport and communication

____________ is actual, physical movements of goods and people between two points.

  1. Logistics

  2. Communication

  3. Transportation

  4. Email
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Transportation is defined as the physical movement of people or goods from one location to another.