Last Answer : Series capacitors on transmission lines are of little use when the load VAR requirement is small.
Description : What is electric power generation transmission and distribution?
Last Answer : Generation: it wrong word at here.because it is no generation it is conversion of one form of energy into electrical form.it may by using any type of energy. Transmission is just to ... place to other by providing some modifications And distribution means use of this energy for any purpose.
Description : The X/R ratio for distribution lines is:
Last Answer : Inductance and resistance
Description : Why ACSR conductor is used for overhead lines?
Last Answer : It has high tensile strength
Description : Shunt capacitance is neglected while considering (a) short transmission line (b) medium transmission line (c) long transmission line (d) medium and long transmission lines
Last Answer : (a) short transmission line
Description : In the analysis of which of the following lines shunt capacitance is neglected ? (a) Short transmission lines (b) Medium transmission lines (c) Long transmission lines (d) Medium as well as long transmission lines
Last Answer : (a) Short transmission lines
Description : Which of the following is not a transmission medium? (a) Telephone lines (b) Co_axial cable (c) Modem (d) Microwave system -Technology
Last Answer : (c) All are communication channel but modem is a dev that convert analog signals to digital signals or vice-versa
Description : Which of the following is not a transmission medium? a. telephone lines b. coaxial cables c. modem d. microwave systems
Last Answer : microwave systems
Description : The velocity of a wave travelling in the air medium without transmission lines or waveguides(wireless) is a) 6 x 10 8 b) 3 x 10 8 c) 1.5 x 10 8 d) 9 x 10 8
Last Answer : b) 3 x 10 8
Description : It involves converting standard logic levels to a form more suitable to telephone transmission lines
Last Answer : igital line encoding
Description : For a 66 kV line having span of 200 meters between towers the approximate sag will be 2 m. If the span is double the sag will be: (A) 1 m (B) 2 m (C) 4m (D) 8m
Last Answer : For a 66 kV line having span of 200 meters between towers the approximate sag will be 2 m. If the span is double the sag will be: 8m
Last Answer : The voltage regulation in magnetic amplifier type voltage regulator is effected by varying the reactance.
Last Answer : When a conductor carries more current on the surface as compared to core, it is due to skin effect.
Last Answer : Overhead system can be designed for operation up to 400 kV.
Last Answer : The underground system cannot be operated above 66 kV.
Last Answer : Service mains are the conductors, which connect the consumer's terminals to the distribution.
Description : Is Aluminium a good conductor of electricity?
Last Answer : Yes aluminium is a conductor and it is a good conductor of electricity. But copper have better conductivity as compare to aluminium.
Description : What is ACCC wire?
Last Answer : Aluminum Conductor Composite Core
Description : What is the full form of ACSR?
Last Answer : Aluminum conductor steel rainforce
Description : About trnsformer
Last Answer : Acc to Ohms law V=IR but it is only applicable when our resistance R is constant, as in case of transformer we take impedence which is equivalent to resistance is not constant it varies with system parameters that why Ohms law not applicable in case of transformer
Description : State the classification of transmission lines depending on length of transmission lines.
Last Answer : A) According to Voltage level: ( 2 Marks) a) High voltage Transmission Line (HV) up to 33 KV b) Extra High Voltage Transmission Line (EHV) above 33 KV up to 400 KV c) Ultra ... Transmission Line: - The length of Long transmission Line is above 200KM and its line voltage is above 100KV
Description : The main limitation for power handling capability of short length transmission lines and cables is (A) power factor (B) stability (C) thermal effect limit (D) conductor size
Last Answer : The main limitation for power handling capability of short length transmission lines and cables is thermal effect limit
Description : Computers cannot communicate with each other directly over telephone lines because they usedigitalpulses whereas telephone lines useanalog sound frequencies. What is the name of the device which permits digital to analog ... A. Interface B. Modem C. Attenuation D. Teleprocessor E. None of the above
Last Answer : Modem
Description : Which of the following relays is used on long transmission lines ? (a) Impedance relay (b) Mho's relay (c) Reactance relay (d) None of the above
Last Answer : (b) Mho's relay
Description : Bulk power transmission over long HVDC lines is preferred because of
Last Answer : Bulk power transmission over long HVDC lines is preferred because of Low cost of HVDC terminal
Description : The standard for long distance analog signal transmission in process control industry is (A) 4-20 mV (B) 0-20 mA (C) 4-20 mA (D) 0-5 V
Last Answer : The standard for long distance analog signal transmission in process control industry is 4-20 mA
Description : State weather the following statement is true or false for Point-to-Point Protocol 1). It is still in widespread use for dial-up TCP/IP connections 2) Point-to-point circuits in the form of asynchronous lines have long been ... . false C. 1. false, 2. false, 3. false D. 1. true, 2. false, 3. true
Last Answer : D. 1. true, 2. false, 3. true
Description : Which of the following statement is not correct with reference to cron daemon in UNIX O.S? (A) The cron daemon is the standard tool for running commands on a predetermined schedule. (B) It starts ... command lines and the times at which they invoked. (D) Crontab for individual users are not stored.
Last Answer : (D) Crontab for individual users are not stored.
Description : What is transmission medium ?
Last Answer : The means by which the computers of a network are physically connected to each other is called transmission medium. Example of transmission medium is cable , radio web , microwave etc.
Description : When signals are free to travel in both directions over a medium simultaneously the transmission is considered?
Last Answer : full-duplex
Description : Quality of transmission depends upon (1) Nature of signal only (2) Nature of medium only (3) Both (1) and (2) (4) Neither A nor B
Last Answer : (3) Both (1) and (2) Explanation: Quality of transmission is governed both by nature of signal and nature of communication channel/medium.
Description : Which of the following refers to full duplex transmission? A. One at a time transmission B. Two transmission medium C. Intermittent transmission D. Two way simultaneous transmission
Last Answer : D. Two way simultaneous transmission
Description : What is Medium transmission line?
Last Answer : Length is about 50km to 150km Operational voltage level is from 20 kV to 100 kV Capacitance effect is present Distributed capacitance form is used for calculation purpose.
Description : Which of the following is required to communicate between two computers? a. communications software b. protocol c. communication hardware d. all of above including access to transmission medium
Last Answer : all of above including access to transmission medium
Description : In ________,a station monitors the medium after it sends a frame to see if the transmission was successful. If so, the station is finished. If, however, there is a collision, the frameis sentagain. A) CSMA/CA B) CSMA/CD C) either (a)or (b) D) both (a) and (b)
Last Answer : CSMA/CD
Description : ________ is a typeof transmission impairment in which the signal loses strength due to theresistance of the transmission medium. A) Attenuation B) Distortion C) Noise D) Decibel
Last Answer : Attenuation
Description : In ATM, the _____ layer defines thetransmission medium,bit transmission,encoding, and electrical-to-optical transformation. A) physical B) ATM layer C) AAL D) none of the above
Last Answer : physical
Description : The information tobe communicated ina data communications system is the_______. A) Medium B) Protocol C) Message D) Transmission
Last Answer : Message
Description : Satellite-Switched Time-Division Multiple Access (SS/TDMA) is A. the method of determining whichdevice has access tothe transmission medium at any time. B. a medium access control technique for ... switching is used to dynamically changethechannel assignments D. All of theabove E. None of the above
Last Answer : a form of TDMA in which circuit switching is used to dynamically changethechannel assignments
Description : The modes of a MAC to share a transmission medium are ___. A. Round Robin B. Reservation C. Contention D. All the above
Last Answer : A. Round Robin
Description : What kind of transmission medium is most appropriate to carry data in a computer network that is exposed to electrical interferences? a) Unshielded twisted pair b) Optical fiber c) Coaxial cable d) Microwave
Last Answer : b) Optical fiber
Description : An important requirement for successful transmission system using light ∙ a. Powerful, reliable light source ∙ b. Strong glass ∙ c. Reliable, high cost transmission medium ∙ d. Powerful regenerators
Last Answer : a. Powerful, reliable light source
Description : Rate of change of a signal on a transmission medium after encoding and modulation have occurred
Last Answer : baud rate
Description : The vehicle through which the coded message is transmitted from the source to the receiver is called a(n) A)coder. B)decoder. C)encoder. D)relay channel. E)medium of transmission.
Last Answer : E)medium of transmission.
Description : OES Office Systems' use of fax machines to carry its advertising messages to customers is which component of the communication process? A)Medium of transmission. B)Decoding process. C)Coding process. D)Sharing of meaning. E)Noise minimisation.
Last Answer : A)Medium of transmission.
Description : A person, group, or organisation that has a meaning it intends and attempts to share with a receiver or an audience is a A)medium of transmission. B)source. C)relay channel. D)decoder. E)sender.
Last Answer : B)source.
Description : ..................... is a type of transmission impairment in which the signal loses strength due to the resistance of the transmission medium. (A) Attenuation (B) Distortion (C) Noise (D) Decibel
Last Answer : (A) Attenuation
Description : Compare LAN, WAN and MAN on the basis of following point: 1) Geographical area covered 2) Communication Medium used 3) Rate of data transmission 4) Example / Application
Last Answer : Comparison LAN WAN MAN Geographical area covered Covers small geographical area.(up to 1km.) Covers large locality and connects countries together. ( Area above 100km) Covers ... School, Hospital. Internet/ Country, Continent. Cable TV network / Small towns, City.
Description : While calculating performance of medium transmission line, what assumptions are made in case of (i) Nominal 'T' Method (ii) Nominal 'TT' Method.
Last Answer : (i) Assumptions are made in case of Nominal 'T' Method: a. It is assume that line capacitance is connected at center of transmission line. b. It is assume that half ... assumed that transmission line resistance & reactance per phase is connected in between two half transmission line capacitance
Description : what is mean by medium transmission line ?
Last Answer : The transmission line which have length between 80 km to 250 km is known as medium transmission line.