In a broadcast communication receiver, most of the receiver selectivity is achieved in: RF section
Description : A selectivity achieved due to manipulation of time of application is called a).Biochemical b). Chronological c). Chemical d). Physical
Last Answer : b). Chronological
Description : Selectivity achieved due to changes in functional group is called a). Physical b). Biological c). Chemical d). Chronological
Last Answer : d). Chronological
Description : . Herbicide deactivation of selectivity in plants is achieved by a). Herbicide metabolism b). Herbicide conjugation c). Both a and b d). None of these
Last Answer : c). Both a and b
Description : Draw practical set-up and explain the procedure to measure selectivity of radio receiver.
Last Answer : Procedure to measure selectivity of radio receiver: Throughout the measurement the receiver is kept tuned to desired frequency 950 Khz. Now the generator output frequency is deviated below ... the generator output voltage is adjusted to get a standard 50 miliwatt receiver output power.
Description : Define selectivity and sensitivity of AM Receiver.
Last Answer : Selectivity:-It needs to accept signals of the wanted frequency and reject other unwanted frequencies. Sensitivity:-The sensitivity of a radio receiver is its ability to amplify weak signals. It is ... the receiver input terminals to give a standard output power, measured at the output terminals.
Description : Explain the following characteristics of AM radio receiver: (i) Sensitivity (ii) Selectivity.
Last Answer : Sensitivity:- The ability to amplify the weak signals is called sensitivity. It is the function of overall receiver gain. Sensitivity of radio receiver is decided by the gain of the RF IF ... perfectly the receiver is able to select the desired carrier frequency and reject other frequencies.
Last Answer : A receiver has poor selectivity. It will also have poor blocking.
Description : Receives and collects satellite signals form a broadcast satellite. A. LNB B. Yagi-Uda array C. Satellite receiver D. Satellite disk
Last Answer : D. Satellite disk
Description : ______ is the first component of any MATV system to received broadcast signals. A. Receiver B. Antenna C. Filter D. Transmitter
Last Answer : B. Antenna
Description : Collects very weak signal from a broadcast satellite A. Satellite dish B. LNB C. Yagi-Uda antenna D. Satellite receiver
Last Answer : A. Satellite dish
Last Answer : Superhetrodyne principle provides selectivity at IF stages
Description : The science of the study of feedback systems in humans, animals and machines is known as: (A) cybernetics (B) reverse communication (C) selectivity study (D) response analysis
Last Answer : Answer: A Cybernetics is the study of communication and control processes in living organisms and machines. Cybernetics analyzes the ability of humans, animals, and some machines to respond to ... machines control their actions by telling them whether they are proceeding in the right direction.
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
Description : Considering non personal communication channels, social networking sites, email and company websites are considered as a) Broadcast media b) Display media c) Online media d) Print media
Last Answer : c) Online media
Description : A one-to-many communication between one sourceand a specific group of hosts is classifiedas a _______ communication. A) unicast B) multicast C) broadcast D) none of the above
Last Answer : multicast
Description : A one-to-all communication between one source and all hosts on a network is classified as a_______ communication. A) unicast B) multicast C) broadcast D) none of the above
Last Answer : broadcast
Description : Which of the following is NOT true about User Datagram Protocol in transport layer? a. Works well in unidirectional communication, suitable for broadcast information. b. It does three way ... File System d. The lack of retransmission delays makes it suitable for real-time applications
Last Answer : b. It does three way handshake before sending datagrams
Description : There are two types of designs for communication subnets: they are ………… A. Point-to-Point channels and Broadcast channels B. packet-switched subnet and store-and-forward C. Multicasting and Broadcasting D. Point-to-Point channels and store-and-forward
Last Answer : A. Point-to-Point channels and Broadcast channels
Description : Communication channel is shared by all the machines on the network in ________ a) broadcast network b) unicast network c) multicast network d) anycast network
Last Answer : a) broadcast network
Description : Considering non-personal communication channels, magazines, direct mail and newspapers are considered as * online media print media broadcast media display media
Last Answer : print media
Description : Considering non-personal communication channels, the magazines, direct mail and newspapers are considered as A. online media B. print media C. broadcast media D. display media
Last Answer : B. print media
Description : Considering non-personal communication channels, magazines, direct mail and newspapers are considered as A.online media B.print media C.broadcast media D.display media Answer :B
Last Answer : B.print media
Description : Experience has shown that the most feasible plan for utilizing occupational orientation programme broadcast by radio is Options: A) The recording of the programme for inter communication playback B) The direct ... on the programme D) The bringing of pupils to listen to and report on the programme
Last Answer : A) The recording of the programme for inter communication playback
Last Answer : AM=Amplitude modulation and FM = Frequency modulation.
Description : Truly effective communication: 1. Depends on using multiple channels 2. Depends on selecting the right method for each message and avoiding duplication, since everyone is overloaded with information 3. ... misunderstood 4. Can only be achieved by communication professional 5. a, b and c
Last Answer : 5. a, b and c
Description : The distributed system is a collection of (P) and communication is achieved in distributed system by (Q) , where (P) and (Q) are : (A) Loosely coupled hardware on tightly ... message passing ,respectively. (D) Loosely coupled software on tightly coupled hardware and file sharing, respectively.
Last Answer : (C) Tightly coupled software on loosely coupled hardware and message passing ,respectively.
Last Answer : Television receiver antenna is usually Yagi antenna.
Description : What is the purpose of the receiver in communication ? -Technology
Last Answer : In the communication process, the " receiver" is the listener, reader, or observer—that is, the individual (or the group of individuals) to whom a message is directed. The receiver is also called the "audience" or decoder.
Description : What is the device used in fiber optic communication which consist of a receiver transmitter use to clean up and amplify digital data moving in one direction and another in the opposite direction? A. Optic compressors B. Optic retarders C. Optic isolator D. Optic regenerators
Last Answer : D. Optic regenerators
Description : Who is responsible in the correctness and accuracy of transmitted information content over a data communication? A. The channel B. The transmitter and receiver C. The modem D. The bridge
Last Answer : B. The transmitter and receiver
Description : Main basic components of a data communication are composed of the following. A. Computer, modern and router B. Computer, bridge and gateway C. Transmitter, channel and receiver D. Transmitter, computer and modem
Last Answer : C. Transmitter, channel and receiver
Description : Who should take the most responsibility for clear and effective communication? A. The Communications Manager B. The sender and the receiver C. The sender D. The receiver
Last Answer : B. The sender and the receiver
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
Description : In the communication process, the receiver and sender are classified as A. communication functions B. communication parties C. communication tools D. communication channels
Last Answer : B. communication parties
Description : What are the basic elements of communication? (a) Sender and receiver (b) Message and channel of communication (c) Response and feedback (d) All of the above
Last Answer : (d) All of the above
Description : Communication will be effective if: (a) It is delivered slowly and clearly (b) It is delivered in a calm situation (c) It reaches the receiver completely (d) It reaches the receiver as intended by the sender
Last Answer : d) It reaches the receiver as intended by the sender
Description : In the Gillette advertisement that claims "Gillette, the best a man can get," Gillette is the communication: A)receiver B)transmitter. C)decoder. D)source.
Last Answer : D)source.
Description : In the process of Communication, which one of the following is in the chronological order? (A) Communicator, Medium, Receiver, Effect, Message (B) Medium, Communicator, Message, Receiver, Effect (C) Communicator, Message, Medium, Receiver, Effect (D) Message, Communicator, Medium, Receiver, Effect
Last Answer : (C) Communicator, Message, Medium, Receiver, Effect
Last Answer : A communication receiver is a superheterodyne receiver.
Description : The activity and selectivity of zeolites as catalyst is based on :-
Last Answer : The activity and selectivity of zeolites as catalyst is based on :- A. Their pore size B. Size of their cavities on the surface C. Both D. None
Description : What is the meaning of selectivity permeable?
Last Answer : Selective permeability refers to the function of plasmamembranes that is needed to maintain homeostasis in a cell andprevent foriegn substances from entering through the cellswalls.Some molecules can pass, some are blocked
Description : What is the process in which water moves from an area of high concentration to an area of low concentration across a selectivity permeable membrane?
Last Answer : Need answer
Description : Diquat, Paraquat, Oxadiargyl and Glyphosate etc. belongs to the selectivity group
Last Answer : Ans.Non-selective herbicides
Description : 2, 4-D, Simazine, Atrazine and Fluchloralin belongs to the selectivity group
Last Answer : Ans.Selective herbicides
Description : There are two properties of the cell necessary to maintain nonequilibrium cellular composition; the first is selectivity and the second is energy conversion. Which of the following statement(s ... transported via secondary active transport include hydrogen ions, calcium, amino acids and glucose
Last Answer : Answer: c, d The selectivity of the plasma membrane, although impressive, cannot account for the nonequilibrium composition of living cells. A cell can be maintained in a nonequilibrium state only by ... to drive the transport of a second species such as protons, calcium, amino acids, or glucose
Description : A striking feature of living cells is a marked difference between the composition of the cytosol and the extracellular milieu. Which of the following statement(s) concerning the mechanisms of maintenance ... d. The selectivity of cell membranes relates only to ions and not organic compounds
Last Answer : Answer: a The survival of the cell requires that cytosolic composition be maintained within narrow limits, despite the constant influx of nutrients and the simultaneous outflow of waste. A ... be altered drastically as a result of regulatory or signaling processes that occur within the cell
Description : The ß-adrenergic blocker which possesses both ß1 selectivity as well as intrinsic sympathomimetic activity is (a) Alprenolol (b) Atenolol (c) Acebutolol (d) Metoprolol
Last Answer : Ans: C
Description : Stacking antenna elements A. increases sensitivity to weak signals B. will suppress odd harmonics C. decrease signal to noise ratio D. increases selectivity
Last Answer : A. increases sensitivity to weak signals
Description : What causes image interference? A. Low gain B. High IF C. Poor front-end selectivity D. Low signal-to-noise ratio
Last Answer : C. Poor front-end selectivity
Description : What is the selectivity index, if the grade of tailings & concentrate is the same? (A) 0 (B) ∞ (C) 1 (D) 0.5
Last Answer : (C) 1