A microwave relay link is used to transmit binary information and has the following specification. Carrier frequency 6Ghz Atmospheric loss 0.

Q1. 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.

a. 12.00

b. 22.37

c. 24

d. 48

Q2. A motor is equipped with an optical shaft encoder to measure motor speed . the optical encoder provides 200

pulses per motor revolution . A microcontroller equipped with a real time interrupt (RTI) capability is used to

measure motor speed . The RTI interval is 32768 msThe microcontroller counts 372 pulses from the optical

encoder in the RTI interval. The speed of the motor is

a. 33

b. 568

c. 3276

d. 3400

Q3.A d arsenal movement with coil resistance of 150ohms is to be designed for use as an ammeter.

V/Rcoil

a. 0.03 mA

b. 0.3A

c. 3.0 A

d. None of the answers

Q4. If the signal power doubled at a given transmitter what is the decibel increase

a. 0.5 db

b. 2db

c. 3db

d. 4db