Analog Communications Mock Test 10

10%

Question 1 of 10

1. A function f(x) is odd, when?

f(x) = f(-x)

f(x) = -f(x)f(-x)

f(x) = -f(x)

f(x) = f(x)f(-x)

Question 1 of 10

Question 2 of 10

2. Notch filter is a band pass filter.

True

False

Question 2 of 10

Question 3 of 10

3. Analog signal may be converted into digital signal by ________

Mixing

Transducing

Filtering

Sampling

Question 3 of 10

Question 4 of 10

4. The auto-correlation function is _________

impulse function

odd function

even function

linear function

Question 4 of 10

Question 5 of 10

5. The coupling used in stoneman transmission bridge is ________

Resistive

Inductive

Combination of inductive and capacitive

Capacitive

Question 5 of 10

Question 6 of 10

6. TRF receivers are used for ________

Removal of unwanted signal

Mixing modulating signal with unwanted signal

Both detection of modulating signal and removal of unwanted signal

Detection of modulating signal

Question 6 of 10

Question 7 of 10

7. In FM the carrier deviation is determined by ________

Amplitude

Phase

Frequency

Modulation

Question 7 of 10

Question 8 of 10

8. Which statement is true about emitter modulator amplifier for amplitude modulation?

operates in class C mode

operates in class A mode

operates in class D mode

operates in class B mode

Question 8 of 10

Question 9 of 10

9. Vestigial side band signals are detected by ________

Ratio detector

Square law demodulator

PLL detector

Synchronous Detection

Question 9 of 10

Question 10 of 10

10. Spectral density express ________

Average noise voltage

Average voltage

Average channel capacity

Average power in a waveform as a function of frequency

Question 10 of 10