Q1. A lossy transmission line is used to connect a transmitter to an antenna . if the VSWR measured at the antenna
end of the transmission line is 1.5 which of the following is correct.
a. The VSWR measured at the transmitter end of the transmission line is smaller than 1.5
b. The VSWR measured at the transmitter end of the transmission
Line is larger than 1.5.
c. The VSWR measured at the transmitter end of the transmission line is equal to 1.5
d. The characteristics impedance of the antenna matches exactly the characteristics impedance of the transmission
Q2 An industrial plant is served by a 12470V delta / 480 V grounded -wye transformer . The high voltage side of the
transformer is served from a 12470-VDELTA/480-V wye connected distribution line that has a grounded neutral
.The best protection of the transformer against lighting strikes on the 12,470-v line will result from surge arrester
e. Phase to ground on the 12,470-V side of the transformer
f. Phase to phase on the 12,470-V side of the transformer
g. Phase to ground on the 480 V side of the transformer
h. Phase to neutral to ground on the 480-v side of the transformer
Q5.A microwave relay link is used to transmit binary information and has the following specification.
Carrier frequency 6Ghz
Atmospheric loss 0.2 dB / Mile
Transmission bandwidth 24 Mhz
Transmitted symbol rate 22.368 Msymbols/ sec
Transmitted antenna gain 44db
Reciever antenna gain 44db
Receiving system effective input noise temperature 500K
To minimize system noise without degrading transmitted signal quality , the absolute minimum bandwidth (mhz) of the
intermediate frequency (IF)Filter in the receiver should be most nearly.
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