1) It is found that a ship to ship communication suffers from fading. This can be avoided by using
2) A buffer amplifier is
A double-tuned amplifier![]()
A high gain D.C. amplifier![]()
A cathode follower stage![]()
None of the above![]()
Answer : B Discuss
3) SSB can be generated by
Filter method![]()
Phase cancellation method![]()
Good attenuation characteristics![]()
All of the above![]()
Answer : D Discuss
4) What is the purpose of peak clipper circuits in radio transmitters?
To prevent overmodulation![]()
To reduce bandwidth![]()
To increase bandwidth![]()
To regulate oscillator I/P voltage![]()
Answer : A Discuss
5) The direction of rotation of a CD is
Clockwise![]()
Anticlockwise![]()
Clockwise or anticlockwise depending on frequency of data stored![]()
Mostly anticlockwise but some times clockwise![]()
Answer : B Discuss
6) A woofer should be fed from the input through a
7) The characteristic impedance of a twin wire feeder used for TV signals is about
8) In EM waves, polarization
Is always vertical in an isotropic medium![]()
Is caused by reflection![]()
Is due to transverse nature of waves![]()
Results from longitudinal nature of waves![]()
Answer : C Discuss
9) The frequency range of 300 kHz to 3000 kHz is known as
10) A telephone channel requires a bandwidth of about