Description : A transmission line consisting of two conductors that have equal resistance per unit length. A. Unbalanced line B. Open-wire line C. Balanced line D. Coaxial line
Last Answer : C. Balanced line
Description : Consists of 2 conductors twisted round each other. a. Twisted pair cable b. Fiber optic cable c. Coaxial cable d. Microwave
Last Answer : a. Twisted pair cable
Description : What medium is used by IBM token ring network that operates at either 4 Mbps or 16 Mbps? A. Twisted pair B. Coaxial cable C. Fiber-optic D. Parallel-wire line
Last Answer : A. Twisted pair
Description : ________cable consists of two insulated copper wires twistedtogether. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Last Answer : Twisted-pair
Description : In twisted pair cable, two insulated wires are twisted around each other which provides protection against noise. Explain. -Technology
Last Answer : Twisting the cables keep them close together so that, any external magnetic fields must cross both cable at the same time, so the interference created in one cable is cancelled by the almost exact opposite amount of interference in the other.
Description : A single conductor running from the transmitter to the antenna. A. RG-8/U B. Single line wire C. Twin-lead D. MIcrostrip
Last Answer : B. Single line wire
Description : A coaxial cable has 7dB of reflected power when the input is 5 watts. What is the output of the transmission line? A. 5 watts B. 2.5 watts C. 1.25 watts D. 1 watt
Last Answer : D. 1 watt
Description : Why is the physical length of a coaxial cable transmission line shorter than its electrical length? A. Skin effect is less pronounced in the coaxial cable B. RF energy moves slower along the ... higher in the parallel feed line D. The characteristic impedance is higher in the parallel feed line
Last Answer : B. RF energy moves slower along the coaxial cable
Description : What is the meaning of the term velocity factor of a transmission line? A. The ratio of the characteristic impedance of the line to the terminating impedance B. The index of shielding for coaxial ... The velocity of the wave on the transmission line divided by the velocity of light in a vacuum.
Last Answer : D. The velocity of the wave on the transmission line divided by the velocity of light in a vacuum.
Description : What is the meaning of the term velocity factor of a transmission line? A. The index of shielding for coaxial cable B. The velocity of the wave on the transmission line multiplied by the velocity of ... The velocity of the wave on the transmission line divided by the velocity of light in a vacuum
Last Answer : D. The velocity of the wave on the transmission line divided by the velocity of light in a vacuum
Description : The HFC network uses _______ cable. A) twisted-pair B) coaxial C) fiber-optic D) acombination of (b) and (c)
Last Answer : fiber-optic
Description : The traditional cable TV system used ________cable endto end. A) twisted-pair B) coaxial C) fiber-optic D) none of the above
Last Answer : coaxial
Description : ___ cable can carry signals ofhigher frequency ranges than_____ cable. A) Twisted-pair; fiber-optic B) Coaxial; fiber-optic C) Coaxial; twisted-pair D) none of the abov
Last Answer : Coaxial; twisted-pair
Description : ______ cable is used for voice and data communications. A) Coaxial B) Fiber-optic C) Twisted-pair D) none of the above
Description : What is the major factor that makes coaxial cable less susceptible to noisethan twisted-pair cable? A) inner conductor B) diameterof cable C) outer conductor D) insulating material
Last Answer : outer conductor
Description : Which of the following is nota guided medium? A) twisted-pair cable B) coaxial cable C) fiber-optic cable D) atmosphere
Last Answer : atmosphere
Description : ______ cable consists of an inner copper core and asecond conductingouter sheath. A) Twisted-pair B) Coaxial C) Fiber-optic D) Shielded twisted-pair
Last Answer : Coaxial
Description : The slowest transmissionspeeds are those of A. twisted-pair wire B. coaxial cable C. fiber-optic cable D. microwaves
Last Answer : twisted-pair wire
Description : was the first step in the evolution of Ethernet from a coaxial cable bus to hub managed, twisted pair network. a. Star LAN b. Ring LAN c. Mesh LAN d. All of the above
Last Answer : a. Star LAN
Description : Which transmission media provides the highest transmission speed in a network? a. coaxial cable b. twisted pair cable c. optical fiber d. electrical cable
Last Answer : c. optical fiber
Description : Identify the non suitable medium for 802.3 ethernet? a. A thin coaxial cable b. A twisted pair cable c. A microwave link d. A fiber optical cable
Last Answer : c. A microwave link
Description : Which of the following cannot be used as a medium for 802.3 ethernet? a) A thin coaxial cable b) A twisted pair cable c) A microwave link d) A fiber optical cable
Last Answer : c) A microwave link
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 : Which transmission media provides the highest transmission speed in a network? a) coaxial cable b) twisted pair cable c) optical fiber d) electrical cable
Last Answer : c) optical fiber
Description : Which of the following is not a guided medium? a. twisted-pair cable b. fiber-optic cable c. coaxial cable d. atmosphere
Last Answer : d. atmosphere
Description : ……….cable is used for voice and data communications. a. Twisted-pair b. None of These c. Coaxial d. Fiber-optic
Last Answer : a. Twisted-pair
Description : ....... was the first step in the evolution of Ethernet from a coaxial cable bus to hub managed, twisted pair network. A) Star LAN B) Ring LAN C) Mesh LAN D) All of the above
Last Answer : A) Star LAN
Description : 8............. was the first step in the evolution of Ethernet from a coaxial cable bus to hubmanaged, twisted pair network. A) Star LAN B) Ring LAN C) Mesh LAN D) All of the above
Description : 802.3 is the standard for 10BASE5 Ethernet that uses ___________ cable as shared medium. A. Twisted pair cable B. Coaxial cable C. Fiber optic cable D. None of the above
Last Answer : B. Coaxial cable
Description : Which one of the following media is multidrop? (A) Shielded Twisted pair cable (B) Unshielded Twisted pair cable (C) Thick Coaxial cable (D) Fiber Optic cable
Last Answer : (C) Thick Coaxial cable
Description : Identify the odd term amongst the following group : (1) Optical fibre (2) Twisted pair wire (3) Microwaves (4) Coaxial cable
Last Answer : Microwaves
Description : A dielectric waveguide for the propagation of electromagnetic energy at light frequencies a. Stripline b. Microstrip c. Laser beam d. Fiber optics
Last Answer : d. Fiber optics
Description : Most mobile satellite array uses ___________ in transforming 50 to 150 Ω impedance. A. stub B. balun C. quarter-wavelength transformer D. microstrip tapers.
Last Answer : C. quarter-wavelength transformer
Description : Carefully read the following descriptions and identify what is being talked about. 1. It consists of two insulated wires twisted around each other, -Technology
Last Answer : 1. Twisted pair cable2. Crosstalk3. Radiowave4. Wired communication channel5. Resource sharing
Description : ____ system transmits frequency-division-multiplexed voice band signals over a coaxial cable for distances up to 4000 miles. A. T carrier B. X carrier C. L carrier D. F carrier
Last Answer : C. L carrier
Description : What is the velocity factor for non-foam dielectric 50 or 75 ohm flexible coaxial cable such as RG 8, 11, 58 and 59? A. 2.70 B. 0.66 C. 0.30 D. 0.10
Last Answer : B. 0.66
Description : An RG-11/U foam coaxial cable has a maximum voltage standing wave of 52 V and a minimum voltage of 17 V. Find the value of the resistive load. A. 24.59Ω B. Either A or C C. 228.75Ω D. Neither A nor C
Last Answer : B. Either A or C
Description : What is the time delay introduced by a 75-ft coaxial cable with a dielectric constant of 2.3? A. 1.54 ns B. 11.5 ns C. 115.6 ns D. 1156 ns
Last Answer : C. 115.6 ns
Description : What is the velocity factor of coaxial cable with a characteristic impedance of 50Ω and capacitance of 30pF/ft and inductance of 75 nH/ft? A. 0.58 B.0.68 C. 0.98 D. 0.81
Last Answer : B.0.68
Description : Which coaxial connector is a more complex and expensive but do a better job in maintaining the electrical characteristics of the cable through the interconnections? A. N-type connector B. F-type connector C.BNC D. PL-259
Last Answer : A. N-type connector
Description : Which coaxial cable connector is least expensive and is widely used for TV sets,VCRs and cable TV? A. N-type connector B. F-type connector C. BNC D. PL-259
Last Answer : B. F-type connector
Description : Which of the following coaxial cable connectors is called the UHF connector? A. PL-259 B. BNC C. N-type connector D. F connector
Last Answer : A. PL-259
Description : What is the velocity factor for non-foam dielectric 50 or 75 ohm flexible coaxial cable such as RG 8, 11, 58 and 59? A. 2.70 B. 0.10 C. 0.66 D. 0.30
Last Answer : C. 0.66
Description : ECE Board Exam March 1996 It is a spacecraft placed in orbit around the earth carrying onboard microwave receiver and transmitting equipments. A. Fiber optic equipment B. Communications satellite C. Wireless radio system D. Coaxial cable syste
Last Answer : B. Communications satellite
Last Answer : : Four pairs
Description : 77 The transformer laminations are insulated from each other by A. Mica strip B. Thin coat of varnish C. Paper D. Any of the above
Last Answer : B. Thin coat of varnish
Description : Which of the following is not a bounded medium? A. Coaxial line B. Two-wire line C. Waveguide D. Free space
Last Answer : D. Free space
Description : What type of balun (balanced-to-unbalanced) is used in high frequency applications? A. Transformer type balun B. A specially configured coaxial transmission line C. A specially configured parallel-wire line D. A λ/2 transformer balun
Last Answer : B. A specially configured coaxial transmission line
Description : Which of the following is considered the most frequently used transmission line? A. Two-wire open line B. Twin lead C. Rigid coaxial line D. Flexible coaxial line
Last Answer : D. Flexible coaxial line
Description : What would be the physical length of a tpical coaxial transmission line that is electrically one-quarter wavelength long at 14.1 MHz? A. 20 meters B. 3.51 meters C. 2.33 meters D. 0.25 meter
Last Answer : B. 3.51 meters