Analog Communications Mock Test 3

10%

Question 1 of 10

1. ITU stands for ________

Indian Telecommunication Union

Indian Telephonic Union

International Telephonic Union

International Telecommunication Union

Question 1 of 10

Question 2 of 10

2. For a large amount of power, a push pull amplifier is designed for operation as ________

class A

class B

class C

class AB

Question 2 of 10

Question 3 of 10

3. Sampling frequency of a compact disk is about ________

10 KHz

70 KHz

50 KHz

30 KHz

Question 3 of 10

Question 4 of 10

4. In frequency modulation, there is a large increase in noise and hence decrease in the signal to noise ratio.

True

False

Question 4 of 10

Question 5 of 10

5. What is the ITU designation range for VHF?

30 to 300 Kilohertz

300 to 3000 Kilohertz

30 to 300 Megahertz

3 to 30 Megahertz

Question 5 of 10

Question 6 of 10

6. If a receiver has poor selectivity then it also have poor ________

blocking of unwanted signals

double spotting

reception

sensitivity

Question 6 of 10

Question 7 of 10

7. Distance at which a sky wave is received back on earth ________ with an angle of incidence.

increases

decreases

can be increase or decrease

can neither be increase or decrease

Question 7 of 10

Question 8 of 10

8. Discone antenna is mainly used in UHF range.

False

True

Question 8 of 10

Question 9 of 10

9. Push pull amplifier is a class B amplifier.

True

False

Question 9 of 10

Question 10 of 10

10. Which among the following is the drawback of Pulse Position Modulation (PPM)?

Synchronization is required between receiver and transmitter

Amplitude is constant

Synchronization is not required between receiver and transmitter

Instantaneous power of PPM modulated signals is constant

Question 10 of 10