MCQOPTIONS
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MCQOPTIONS
This section includes 22 Mcqs, each offering curated multiple-choice questions to sharpen your Avionics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Refer to the VHDL code given below, what will be the output? |
| A. | 8- bit STD_LOGIC_VECTOR a+b |
| B. | 8- bit UNSIGNED a+b |
| C. | 4- bit STD_LOGIC_VECTOR a+b |
| D. | ErrorView Answer |
| Answer» E. | |
| 2. |
What will be the value of y after the execution of the following VHDL code? |
| A. | 8- bit STD_LOGIC_VECTOR m+n |
| B. | 8- bit UNSIGNED m+n |
| C. | 4- bit STD_LOGIC m+n |
| D. | ErrorView Answer |
| Answer» B. 8- bit UNSIGNED m+n | |
| 3. |
The function conv_std_logic_vector(p,b) is used for_______ |
| A. | Converting ‘p’ form STD_LOGIC_VECTOR to STD_LOGIC type |
| B. | is used for_______a) Converting ‘p’ form STD_LOGIC_VECTOR to STD_LOGIC typeb) Converting any data type ‘p’ into STD_LOGIC_VECTOR with ‘b’ bits |
| C. | Converting STD_LOGIC_VECTOR into ‘p’ type with ‘b’ bits |
| D. | Converting STD_LOGIC into STD_LOGIC_VECTOR |
| Answer» C. Converting STD_LOGIC_VECTOR into ‘p’ type with ‘b’ bits | |
| 4. |
Which of the following is the correct syntax to convert INTEGER ‘p’ into SIGNED number of ‘b’ bits? |
| A. | conv_integer_signed(p,b);b) conv_signed_integer(p,b);c) conv_signed(p,b);d) conv_signed_p( |
| B. | ;b) conv_signed_integer(p,b); |
| C. | conv_signed(p,b); |
| D. | conv_signed_p(b); |
| Answer» D. conv_signed_p(b); | |
| 5. |
In the function conv_unsigned(p, b), what does p and b refers to? |
| A. | p is the data object to be converted and b is the base of that data object |
| B. | , what does p and b refers to?a) p is the data object to be converted and b is the base of that data objectb) p is the data object to be converted amd b is the bits needed in converted variable |
| C. | p is the parameter to be converted and b is the bits of same parameter |
| D. | p is the type of data to be converted and b is the type of data into which p should be converted |
| Answer» C. p is the parameter to be converted and b is the bits of same parameter | |
| 6. |
If we are using conv_integer(p) function, then which of the following cannot be the type of parameter ‘p’? |
| A. | STD_LOGIC VECTOR |
| B. | STD_ULOGIC |
| C. | INTEGER |
| D. | SIGNED |
| Answer» B. STD_ULOGIC | |
| 7. |
Which of the following package of IEEE contains most of the data conversion functions? |
| A. | std_logic_1164 |
| B. | std |
| C. | std_logic_arith |
| D. | std_logic |
| Answer» D. std_logic | |
| 8. |
In the VHDL code given below, what will be the error at the time of compilation? |
| A. | Type mismatch |
| B. | Syntax problem |
| C. | No declaration |
| D. | Can’t compileView Answer |
| Answer» B. Syntax problem | |
| 9. |
How to correctly assign the value of 2x+10 to y in the following VHDL code? |
| A. | y <= 2*x + 10; |
| B. | long y <= long 2*x + 10; |
| C. | short y <= long (2*x + 10); |
| D. | y <= long (2*x + 10);View Answer |
| Answer» E. | |
| 10. |
One can perform basic operations between different data types. |
| A. | True |
| B. | False |
| Answer» C. | |
| 11. |
Refer to the VHDL code given below, which of the following line has error? |
| A. | Line 1 |
| B. | Line 4 |
| C. | Line 5 |
| D. | Line 6View Answer |
| Answer» D. Line 6View Answer | |
| 12. |
WHAT_IS_THE_5TH_HARMONIC_OF_THE_RECTANGULAR_DIGITAL_WAVE_IF_THE_FREQUENCY_IS_14KHZ??$ |
| A. | 21kHz |
| B. | 45kHz |
| C. | 25kHz |
| D. | 70kHz |
| Answer» E. | |
| 13. |
WHAT_IS_THE_SIGNAL_FREQUENCY_IF_THE_RECTANGULAR_DIGITAL_WAVE_HAS_A_TIME_PERIOD_OF_71.4‚ÂÀ√≠¬¨‚À´S??$# |
| A. | 14,006Hz |
| B. | 15,036Hz |
| C. | 14Hz |
| D. | 21,436Hz |
| Answer» B. 15,036Hz | |
| 14. |
What is the output of a digital to analog converter?$ |
| A. | Smooth continuous wave |
| B. | Stairstep wave |
| C. | Triangular waves |
| D. | Circular waves |
| Answer» C. Triangular waves | |
| 15. |
What is the rms noise voltage if the weight of the LSB is 0.005865? |
| A. | 5mV |
| B. | 1mV |
| C. | 1.7mV |
| D. | 0.7mV |
| Answer» D. 0.7mV | |
| 16. |
What is the maximum amount of quantization error that can occur in a 10bit system in the input analog voltage is from 0V to 6V? |
| A. | 10mV |
| B. | 6mV |
| C. | 0.5mV |
| D. | 1mV |
| Answer» C. 0.5mV | |
| 17. |
What is the error that occurs when the number of bits is not sufficient enough to represent the analog voltages? |
| A. | Data error |
| B. | Sampling error |
| C. | Acquisition error |
| D. | Quantization error |
| Answer» E. | |
| 18. |
What is the number of voltage increments that can be represented in an 8-bit system? |
| A. | 255 |
| B. | 256 |
| C. | 215 |
| D. | 126 |
| Answer» B. 256 | |
| 19. |
What is the minimum rate at which an analog signal of frequency 6000Hz is sampled? |
| A. | 6000Hz |
| B. | 60Hz |
| C. | 120Hz |
| D. | 12000Hz |
| Answer» E. | |
| 20. |
What is the minimum frequency of sampling so that the analog waveform is adequately expressed? |
| A. | Minimum sampling rate |
| B. | Minimum sampling frequency |
| C. | Nyquist frequency |
| D. | Conversion rate |
| Answer» D. Conversion rate | |
| 21. |
The process of converting a continuous analog signal to a discrete digital signal is called? |
| A. | Discretisation |
| B. | Sampling |
| C. | Preemphasis |
| D. | Reduction |
| Answer» C. Preemphasis | |
| 22. |
What is the main role of an ADC? |
| A. | Amplify |
| B. | Convert analog to digital |
| C. | Reduce noise |
| D. | Increase range |
| Answer» C. Reduce noise | |