The line of sight communication requires transmit and receive antenna to face each other. If the transmit...

The line of sight communication requires transmit and receive antenna to face each other. If the transmit antenna is vertically polarized, for the best reception the receive antenna should be: 

(1) Horizontally polarized (2) Vertically polarized (3) At 45° with respect to the horizontal polarization (4) At 45° with respect to the vertical polarization
by

1 Answer

Answer :

The line of sight communication requires transmit and receive antenna to face each other. If the transmit antenna is vertically polarized, for the best reception the receive antenna should be:  Horizontally polarized.

by

Related questions

Consider the following statements: 1. In a direct-to-home (DTH) system, the viewer dish antenna picks up signals from the satellite directly. 2. Cable operators receive signal from the satellite on large community dish antennas and then transmit to the viewers’ sets. Which of the above statements is/are correct? (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2

Description : Consider the following statements: 1. In a direct-to-home (DTH) system, the viewer dish antenna picks up signals from the satellite directly. 2. Cable operators receive signal from the satellite on large community dish antennas and ... ? (a) Only 1 (b) Only 2 (c) Both 1 and 2 (d) Neither 1 nor 2

Last Answer : Ans:(c)

What characteristic allows the same antenna to both transmit and receive?

Description : What characteristic allows the same antenna to both transmit and receive?

Last Answer : Reciprocity.

The parasitic array can be rotated to receive or transmit in different directions. What is the name given to such an antenna?

Description : The parasitic array can be rotated to receive or transmit in different directions. What is the name given to such an antenna?

Last Answer : Rotary array.

What is the optimum length for a half-wave aerial that requires to transmit and receive 1 MHz signals?

Description : What is the optimum length for a half-wave aerial that requires to transmit and receive 1 MHz signals?

Last Answer : An aerial length of 750 metres is required

Communication satellite are used to a) Transmit communication signal only b)Receive Communication signal only c)Receive and redirect communication signal d)Provides information of natural resources only

Description : Communication satellite are used to a) Transmit communication signal only b)Receive Communication signal only c)Receive and redirect communication signal d)Provides information of natural resources only

Last Answer : c)Receive and redirect communication signal

Communication satellites are used to: (1) To transmit communication signals (2) To receive and redirect communication signals (3) To only receive communication signal (4) To provide information of national sources only

Description : Communication satellites are used to: (1) To transmit communication signals (2) To receive and redirect communication signals (3) To only receive communication signal (4) To provide information of national sources only

Last Answer : To receive and redirect communication signals

What is the maximum line-of-sight distance between a paging antenna 250 ft high and a pager receiver 3.5ft of the ground? A. 25 km B.25mi C. 70.73 km D. 70.73 mi

Description : What is the maximum line-of-sight distance between a paging antenna 250 ft high and a pager receiver 3.5ft of the ground? A. 25 km B.25mi C. 70.73 km D. 70.73 mi

Last Answer : B.25mi

Which of the following statements is not true with respect to microwaves? (A) Electromagnetic waves with frequencies from 300 GHz to 400 THz. (B) Propagation is line-of-sight. (C) Very high-frequency waves cannot penetrate walls. (D) Use of certain portions of the band requires permission from authorities.

Description : Which of the following statements is not true with respect to microwaves? (A) Electromagnetic waves with frequencies from 300 GHz to 400 THz. (B) Propagation is line-of-sight. (C) Very ... waves cannot penetrate walls. (D) Use of certain portions of the band requires permission from authorities.

Last Answer : (A) Electromagnetic waves with frequencies from 300 GHz to 400 THz.

The transmit and receive elements of a sound-powered telephone handset are _____________. A. identical and can be used for either function B. of similar construction but different enough to be used only for its own function C. of very different construction and MUST be used only for its own function D. constructed so that each can fit only in its own recess

Description : The transmit and receive elements of a sound-powered telephone handset are _____________. A. identical and can be used for either function B. of similar construction but different enough to be used only for ... only for its own function D. constructed so that each can fit only in its own recess

Last Answer : Answer: A

Which of the following statement is incorrect? a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line b. HDLC is a standard synchronous communication protocol. c. RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data d. RTS/CTS is the way the terminal indicates ringing

Description : Which of the following statement is incorrect? a. Multiplexers are designed to accept data from several I/O devices and transmit a unified stream of data on one communication line b. HDLC is a standard ... indicates that it is ready to accept data d. RTS/CTS is the way the terminal indicates ringing

Last Answer : RTS/CTS is the way the DTE indicates that it is ready to transmit data and the way the DCW indicates that it is ready to accept data

The VLF and LF bauds use .............. propagation for communication. (A) Ground (B) Sky (C) Line of sight (D) Space

Description : The VLF and LF bauds use .............. propagation for communication. (A) Ground (B) Sky (C) Line of sight (D) Space

Last Answer : Answer: A Explanation: VLF (Very Low Frequency) LF (Low Frequency) In general there are three type of propagation.1.Ground Propagation 2.Sky propagation 3.Line-of-sight propagation ... portion of the atmosphere. These low-frequency signals travel in all directions from the transmitting antenna.

Turning up the transmit power, or utilizing a high-gain antenna to reach wireless users from a distance, increases your exposure to ______________________.?

Description : Turning up the transmit power, or utilizing a high-gain antenna to reach wireless users from a distance, increases your exposure to ______________________.?

Last Answer : Turning up the transmitter power is a good way to insure that more cellphones, farther away, can hear the base station. But it doesn't to anything to help the base station hear the cellphones that ... narrower beam-width. So it works farther out, but only through a narrower 'window' of directions.

The product of antenna input power and the antenna power gain expressed in kW is called __. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Description : The product of antenna input power and the antenna power gain expressed in kW is called __. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Last Answer : A. Effective Radiated Power (ERP)

The product of the radiated RF power of a transmitter and the gain of the antenna system in a given direction relative to an isotropic radiator is called ____. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Description : The product of the radiated RF power of a transmitter and the gain of the antenna system in a given direction relative to an isotropic radiator is called ____. A. Effective Radiated Power (ERP) B. Effective Isotropic Radiated Power (EIRP) C. Radiated Power D. Transmit Power

Last Answer : B. Effective Isotropic Radiated Power (EIRP)

Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli

Description : Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli

Last Answer : Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli

Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli

Description : Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli

Last Answer : Highly specialised cells in animals which can detect, receive & transmit different kinds of stimuli

The first satellite to receive and transmit simultaneously A. Intelsat I B. Agila I C. Syncorn I D. Telstar I

Description : The first satellite to receive and transmit simultaneously A. Intelsat I B. Agila I C. Syncorn I D. Telstar I

Last Answer : D. Telstar I

Known to be the first satellite capable to receive and transmit simultaneously. A. Score B. Syncom I C. Telstar 1 D. Echo1

Description : Known to be the first satellite capable to receive and transmit simultaneously. A. Score B. Syncom I C. Telstar 1 D. Echo1

Last Answer : C. Telstar 1

What is the primary advantage of DSBSC in AM? A. Reduce bandwidth over standard AM B. All of these C. It is simpler to transmit and receive than the standard AM D. No transmitter power is wasted in the carrier

Description : What is the primary advantage of DSBSC in AM? A. Reduce bandwidth over standard AM B. All of these C. It is simpler to transmit and receive than the standard AM D. No transmitter power is wasted in the carrier

Last Answer : D. No transmitter power is wasted in the carrier

The transmission mode which allows both communicating devices to transmit and receive data simultaneously is: a) Full Duplex b) Simplex c) Half Duplex d) Simple Complex e) None of These

Description : The transmission mode which allows both communicating devices to transmit and receive data simultaneously is: a) Full Duplex b) Simplex c) Half Duplex d) Simple Complex e) None of These

Last Answer : a) Full Duplex

During which of the transmit or receive cycles are both the tr and atr tubes of a parallelconnected duplexer ionized (arcing)?

Description : During which of the transmit or receive cycles are both the tr and atr tubes of a parallelconnected duplexer ionized (arcing)?

Last Answer : Transmit.

Part of a microwave link can be approximated by free space conditions. The antenna gain are each 40 dB, the frequency is 10 GHz, and the path length is 80 km. Calculate the receive power for a transmitted power of 10 W? A. 0.871 μW B. 871 μW C. 0.871 mW D. 871 nW

Description : Part of a microwave link can be approximated by free space conditions. The antenna gain are each 40 dB, the frequency is 10 GHz, and the path length is 80 km. Calculate the receive power for a transmitted power of 10 W? A. 0.871 μW B. 871 μW C. 0.871 mW D. 871 nW

Last Answer : A. 0.871 μW

A DISTRESS message differs from an URGENCY message because: a. There is grave and imminent danger which requires immediate assistance b. The aeroplane has suffered damage that endangers the ability to fly c. The aeroplane will not be able to reach a suitable aerodrome d. The situation concerns the safety of passengers on board or within sight

Description : A DISTRESS message differs from an URGENCY message because: a. There is grave and imminent danger which requires immediate assistance b. The aeroplane has suffered damage that endangers the ability ... suitable aerodrome d. The situation concerns the safety of passengers on board or within sight

Last Answer : a. There is grave and imminent danger which requires immediate assistance

A DISTRESS message differs from an URGENCY message because: a. There is grave and imminent danger which requires immediate assistance b. The aeroplane has suffered damage that endangers the ability to fly c. The aeroplane will not be able to reach a suitable aerodrome d. The situation concerns the safety of passengers on board or within sight

Description : A DISTRESS message differs from an URGENCY message because: a. There is grave and imminent danger which requires immediate assistance b. The aeroplane has suffered damage that endangers the ... suitable aerodrome d. The situation concerns the safety of passengers on board or within sight

Last Answer : a. There is grave and imminent danger which requires immediate assistance

ECE Board Exam March 1996 When the transmitting and receiving antennas are in line-of-sight of each other, the mode of propagation is ________ wave. A. space or direct B. ground C. surface D. sky

Description : ECE Board Exam March 1996 When the transmitting and receiving antennas are in line-of-sight of each other, the mode of propagation is ________ wave. A. space or direct B. ground C. surface D. sky

Last Answer : A. space or direct

__________ transmit signals that carry pictures, data, music and conversations invisibly over long distances and have been the basis for almost all non-written communication and most wireless technologies used by humans today.?

Description : __________ transmit signals that carry pictures, data, music and conversations invisibly over long distances and have been the basis for almost all non-written communication and most wireless technologies used by humans today.?

Last Answer : radio waves

Term in communication which is referred, “to send out in all direction”. A. Announce B. Broadcast C. Transmit D. Media

Description : Term in communication which is referred, “to send out in all direction”. A. Announce B. Broadcast C. Transmit D. Media

Last Answer : B. Broadcast

Which data communication method is used to transmit the data over a serial communication link? a. simplex b. half-duplex c. full-duplex d. b and c e. None of above

Description : Which data communication method is used to transmit the data over a serial communication link? a. simplex b. half-duplex c. full-duplex d. b and c e. None of above

Last Answer : full-duplex

Pick up the correct statement from the following: (A) The theodolite in which telescope can be rotated in vertical plane is called a transmit (B) When the vertical circle is to the left of the telescope during observation, it is called to be in left face (C) When the vertical circle is to the right of the telescope during observation, it is called to be in right face (D) All the above

Description : Pick up the correct statement from the following:  (A) The theodolite in which telescope can be rotated in vertical plane is called a transmit  (B) When the vertical circle is to the left of ... the telescope during observation, it is called to be  in right face  (D) All the above 

Last Answer : (D) All the above 

Communication management: 1. Is important only in projects involving telephone, television, radio, or newspaper production facilities and operations 2. Is not a big problem for people with normal speech, sight and hearing 3. Involves the originator, the message, the medium and the receiver 4. Preparing an agenda

Description : Communication management: 1. Is important only in projects involving telephone, television, radio, or newspaper production  facilities and operations  2. Is not a big problem for people with normal ... . Involves the originator, the message, the medium and the receiver  4. Preparing an agenda

Last Answer : 3. Involves the originator, the message, the medium and the receiver

Post office which is situated on a line of through mail communication receive & sorts bags intended for office in advance, without opening them is a) TMO b) SO c) Transit office d) None of the above

Description : Post office which is situated on a line of through mail communication receive & sorts bags intended for office in advance, without opening them is a) TMO b) SO c) Transit office d) None of the above

Last Answer : c) Transit office

A dipole antenna requires to be fed with 20 kW of power to produce a given signal strength to a particular distant point. If the addition of a reflector makes the same field strength available with an input power of 11kW. What is the gain in dB, obtained by the use if the reflector. (Gain referred to this particular dipole). A. 4.75 B. 2.6 C. 1.81 D. 4.24

Description : A dipole antenna requires to be fed with 20 kW of power to produce a given signal strength to a particular distant point. If the addition of a reflector makes the same field strength available with an input power of 11kW ... Gain referred to this particular dipole). A. 4.75 B. 2.6 C. 1.81 D. 4.24

Last Answer : B. 2.6

A dipole antenna requires to be feed with 20 kW of power to produce a given signal strength to a particular distant point. If the addition of a reflector makes the same field strength available with an input power of 11 kW. What is the gain in dB obtain by the use of the reflector ? ( Gain referred to this particular dipole) A. 4.24 B. 1.81 C. 4.75 D. 2.6

Description : A dipole antenna requires to be feed with 20 kW of power to produce a given signal strength to a particular distant point. If the addition of a reflector makes the same field strength available with an input power of 11 ... ( Gain referred to this particular dipole) A. 4.24 B. 1.81 C. 4.75 D. 2.6

Last Answer : D. 2.6

How many channels can you receive using a dish versus an antenna?

Description : How many channels can you receive using a dish versus an antenna?

Last Answer : The number of channels you receive will be based on your location. Generally speaking you will receive many more channells with the dish.

Which of the following antennas receive signals in the horizontal plane equality well from all directions? A. Horizontal Hertz antenna B. Vertical loop antenna C. Vertical Yagi antenna D. A vertical antenna which is a quarter-wavelength long

Description : Which of the following antennas receive signals in the horizontal plane equality well from all directions? A. Horizontal Hertz antenna B. Vertical loop antenna C. Vertical Yagi antenna D. A vertical antenna which is a quarter-wavelength long

Last Answer : D. A vertical antenna which is a quarter-wavelength long

An antenna that can only receive a television signal. A. Isotropic antenna B. TVRO C. Reference antenna D. Yagi antenna

Description : An antenna that can only receive a television signal. A. Isotropic antenna B. TVRO C. Reference antenna D. Yagi antenna

Last Answer : B. TVRO

Refers to a type of beam antenna which uses two or more straight elements arranged in line with each other. A. Dipole antenna B. Yagi antenna C. Whip antenna D. Rhombic antenna

Description : Refers to a type of beam antenna which uses two or more straight elements arranged in line with each other. A. Dipole antenna B. Yagi antenna C. Whip antenna D. Rhombic antenna

Last Answer : B. Yagi antenna

An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak

Description : An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W

Last Answer : An SSB transmitter produces a peak-to-peak voltage of 200 V across a 100 Ω antenna load. What is the Peak Envelope Power? A) 49.98 W B) 79.98 W C) 99.96 W D) 199.93 W

For an earth station transmitter, with an antenna output power of 40dBW 10,000W, a back-off loss of 3dB, a

Description : For an earth station transmitter, with an antenna output power of 40dBW 10,000W, a back-off loss of 3dB, a total branching and feeder loss of 3dB, a total branching and feeder loss of 3dB and transmit ... effective isotropic radiated power (EIRP will be  a) 38dBW b) 40 dBW c 36 dBW d) 47 dBW

Last Answer : For an earth station transmitter, with an antenna output power of 40dBW 10,000W, a back-off loss of 3dB, a total branching and feeder loss of 3dB, a total branching and feeder loss of 3dB and transmit antenna gain of 4dB, the effective isotropic radiated power (EIRP will be 38dBW

The directive gain of an antenna:

Description : The directive gain of an antenna: (1) is less than or equal to 1 (2) is greater than or equal to 1 (3) lies between 0 and directivity of antenna (4) is greater than directivity of antenna

Last Answer : The directive gain of an antenna: lies between 0 and directivity of antenna

Adaptive array antenna is superior to switched beam antenna because:

Description : Adaptive array antenna is superior to switched beam antenna because: (A) It optimizes the power radiated (B) It has simpler architecture (C) It has low bandwidth (D) It has low backlobe

Last Answer : Adaptive array antenna is superior to switched beam antenna because: It optimizes the power radiated

In any transmitting antenna system, efficiency primarily depends upon

Last Answer : In any transmitting antenna system, efficiency primarily depends upon radiation resistance.

Ground plane antenna are used for

Last Answer :  Ground plane antenna are used for VHF

A helical antenna is used for satellite tracking because of its

Last Answer : A helical antenna is used for satellite tracking because of its Circular polarization

The number of parasitic elements in yagi antenna is

Last Answer : The number of parasitic elements in yagi antenna is 2.

Electrical length of an antenna is

Last Answer : Electrical length of an antenna is Greater than physical length.

Yagi antenna has

Last Answer : Yagi antenna has Driven antenna, reflector and directors.

Yagi antenna contains

Last Answer : Yagi antenna contains Dipole, one reflector and many directors.

Television receiver antenna is usually

Last Answer : Television receiver antenna is usually Yagi antenna.