An FM radio receiver which is tuned to a 91.6 MHz broadcast station may receive an image frequency of __________ MHz. 113 80.9 102.3 70.2 TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is a digital modulation technique? DM PSK All PCM TRUE ANSWER : ? YOUR ANSWER : ?
For telegraphy the most commonly used modulation system is Two tone modulation Single tone modulation FSK PCM TRUE ANSWER : ? YOUR ANSWER : ?
A modem is classified as low speed if data rate handled is Upto 600 bps Upto 400 bps Upto 250 bps Upto 100 bps TRUE ANSWER : ? YOUR ANSWER : ?
For a given carrier wave, maximum undistorted power is transmitted when value of modulation is 1 0.5 0.8 TRUE ANSWER : ? YOUR ANSWER : ?
In case of frequency modulation, modulating voltage remains constant if the modulating frequency is lowered, then Amplitude of distant sidebands increases Amplitude of distant sidebands remains constant Amplitude of distant sidebands first increases, then decreases Amplitude of distant sidebands decreases TRUE ANSWER : ? YOUR ANSWER : ?
A woofer should be fed from the input through a Band pass filter Band stop filter High pass filter Low pass filter TRUE ANSWER : ? YOUR ANSWER : ?
The frequency range of 300 kHz to 3000 kHz is known as Very high frequency High frequency Low frequency Medium frequency TRUE ANSWER : ? YOUR ANSWER : ?
Assertion (A): In FM the frequency of the carrier is varied by the modulating voltageReason (R): FM and PM are two forms of angle modulation. Both A and R are correct but R is not correct explanation of A Both A and R are correct and R is correct explanation of A A is correct but R is wrong A is wrong but R is correct TRUE ANSWER : ? YOUR ANSWER : ?