MCQOPTIONS
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MCQOPTIONS
This section includes 23 Mcqs, each offering curated multiple-choice questions to sharpen your Electronics knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
ASCII codes are used strictly for representing the letters in the alphabet. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 2. |
64 hexadecimal equals 100 decimal. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 3. |
The addition 1 + 0 doesn't generate a carry bit; one does not exist. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 4. |
A BCD code that represents each digit of a decimal number by a binary number derived by adding 3 to its 4-bit true binary value is _________. |
| A. | 9's complement code |
| B. | excess-3 code |
| C. | 8421 code |
| D. | gray code |
| Answer» C. 8421 code | |
| 5. |
In the gray code, each number is 3 greater than the binary representation of that number. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 6. |
The __________ code is a nonweighted binary code. |
| A. | excess-3 |
| B. | gray |
| C. | multibit |
| D. | minival |
| Answer» C. multibit | |
| 7. |
What is the difference between binary coding and binary coded decimal? |
| A. | Binary coding is pure binary. |
| B. | BCD is pure binary. |
| C. | Binary coding has a decimal format. |
| D. | BCD has no decimal format. |
| Answer» B. BCD is pure binary. | |
| 8. |
The process of converting a decimal number to its binary equivalent is called binary conversion. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 9. |
The binary coded decimal (BCD) code is a system that represents each of the 10 decimal digits as a(n) ____________. |
| A. | 4-bit binary code |
| B. | 8-bit binary code |
| C. | 16-bit binary code |
| D. | ASCII code |
| Answer» B. 8-bit binary code | |
| 10. |
When using the excess-3 code a value of 3 is added to each column of decimal digits before it is converted to a 4-bit binary code. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» C. 1 | |
| 11. |
A binary number's value changes most drastically when the ____ is changed. |
| A. | LSB |
| B. | duty cycle |
| C. | MSB |
| D. | frequency |
| Answer» D. frequency | |
| 12. |
Convert the binary number 1001.0010 to decimal. |
| A. | 125 |
| B. | 12.5 |
| C. | 90.125 |
| D. | 9.125 |
| Answer» E. | |
| 13. |
A binary code that progresses such that only one bit changes between two successive codes is _________. |
| A. | 9's complement code |
| B. | excess-3 code |
| C. | 8421 code |
| D. | gray code |
| Answer» E. | |
| 14. |
Base is the same as radix. |
| A. | 1 |
| B. | |
| Answer» B. | |
| 15. |
The most significant digit is the rightmost, largest-weight digit in a number. |
| A. | 1 |
| B. | |
| Answer» C. | |
| 16. |
3428 is the decimal value for which of the following binary coded decimal (BCD) groupings? |
| A. | 11010000000000 |
| B. | 11010000000000 |
| C. | 11010000000000 |
| D. | 110100000000000 |
| Answer» C. 11010000000000 | |
| 17. |
Sample-and-hold circuits in ADCs are designed to: |
| A. | sample and hold the output of the binary counter during the conversion process |
| B. | stabilize the ADCs threshold voltage during the conversion process |
| C. | stabilize the input analog signal during the conversion process |
| D. | sample and hold the ADC staircase waveform during the conversion process |
| Answer» D. sample and hold the ADC staircase waveform during the conversion process | |
| 18. |
What is the resultant binary of the decimal problem 49 + 1 = ? |
| A. | 1010101 |
| B. | 110101 |
| C. | 110010 |
| D. | 110001 |
| Answer» D. 110001 | |
| 19. |
Digital electronics is based on the _________ numbering system. |
| A. | decimal |
| B. | hexadecimal |
| C. | binary |
| D. | octal |
| Answer» D. octal | |
| 20. |
The weight of the LSB as a binary number is: |
| A. | 1 |
| B. | 2 |
| C. | 3 |
| D. | 4 |
| Answer» B. 2 | |
| 21. |
Decimal numbers can be converted into binary by dividing by two and recording the remainders. |
| A. | 1 |
| B. | |
| C. | 1 |
| D. | |
| Answer» B. | |
| 22. |
The number of bits used to store a BCD digit is: |
| A. | 8 |
| B. | 4 |
| C. | 1 |
| D. | 2 |
| Answer» C. 1 | |
| 23. |
Base 10 refers to which number system? |
| A. | binary coded decimal |
| B. | decimal |
| C. | octal |
| D. | hexadecimal |
| Answer» C. octal | |