1. broadband FM
2. SSB with carrier
3. DSB-SC
4. SSB without carrier
SSB with carrier
1. the input to the modulator is essentially constant
2. the modulator is going through slope overload
3. the accumulator is in saturation
4. the speech signal is being sampled at the Nyquist rate
the input to the modulator is essentially constant
1. equal to its group velocity
2. less than the velocity of light in free space
3. equal to the velocity of light in free space
4. greater than the velocity of light in free space
greater than the velocity of light in free space
1. 4 mW
2. 1 mW
3. 7 mW
4. (1/4) mW
4 mW
1. 25
2. 50
3. 100
4. 5000
50
1. (1 - 2e-t + e-2t) u (t)
2. (1 + 2e-t - e-2t) u (t)
3. (0.5 + e-t+ 1.5e-2t) u (t)
4. (0.5 + 2e-t+ 2e-2t) u (t)
(1 - 2e-t + e-2t) u (t)
1. S1 is FALSE and S2 is TRUE
2. both S1 and S2 are TRUE
3. S1 is TRUE and S2 is FALSE
4. both S1 and S2 are FALSE
both S1 and S2 are FALSE
1. 2.7 μm
2. 0.3 μm
3. 2.25 μm
4. 0.75 μm
0.3 μm
1. S1 is FALSE and S2 is TRUE
2. both S1 and S2 are TRUE
3. S1 is TRUE and S2 is FALSE
4. both S1 and S2 are FALSE
S1 is FALSE and S2 is TRUE
1. 2 mA
2. 3 mA
3. 9 mA
4. 4 mA
4 mA