Avionics Mock Test 4

10%

Question 1 of 10

1. What is the process of digital communication where a threshold value is set at the receiver to reduce noise?

Data regeneration

Signal cut off

Signal regeneration

Signal threshold

Question 1 of 10

Question 2 of 10

2. Who is credited with creating the stored program concept?

Alan Turing

John Von Neumann

Ken Thompson

Larry Page

Question 2 of 10

Question 3 of 10

3. According to the sampling theorem, what is the minimum sampling frequency to retain all the information if the bandwidth of the signal is 20MHz?

20MHz

80MHz

40MHz

2MHz

Question 3 of 10

Question 4 of 10

4. Power consumption is low in pulse modulation.

True

False

Question 4 of 10

Question 5 of 10

5. Settling time is the time taken to convert one binary data into analog.

False

True

Question 5 of 10

Question 6 of 10

6. Sampling an analog signal produces pulse amplitude modulation.

False

True

Question 6 of 10

Question 7 of 10

7. What is the number of significant sidebands produced when the bandwidth of the signal is 24kHz and the modulating frequency is 3kHz?

Question 7 of 10

Question 8 of 10

8. Which of the following bit has an error if odd parity is used?

	data	Parity bit
A	1000	0
B	1001	0
C	1100	1
D	1111	1

Question 8 of 10

Question 9 of 10

9. What is the rms noise voltage if the weight of the LSB is 0.005865?

0.7mV

1.7mV

1mV

5mV

Question 9 of 10

Question 10 of 10

10. What is the 5th harmonic of the rectangular digital wave if the frequency is 14kHz?

70kHz

21kHz

45kHz

25kHz

Question 10 of 10