MCQOPTIONS
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MCQOPTIONS
This section includes 9 Mcqs, each offering curated multiple-choice questions to sharpen your Digital Circuits knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
If enable input is high then the multiplexer is ______________ |
| A. | Enable |
| B. | Disable |
| C. | Saturation |
| D. | High Impedance |
| Answer» C. Saturation | |
| 2. |
The inputs/outputs of an analog multiplexer/demultiplexer are ____________ |
| A. | Bidirectional |
| B. | Unidirectional |
| C. | Even parity |
| D. | Binary-coded decimal |
| Answer» B. Unidirectional | |
| 3. |
One multiplexer can take the place of ____________ |
| A. | Several SSI logic gates |
| B. | Combinational logic circuits |
| C. | Several Ex-NOR gates |
| D. | Several SSI logic gates or combinational logic circuits |
| Answer» E. | |
| 4. |
A basic multiplexer principle can be demonstrated through the use of a ____________ |
| A. | Single-pole relay |
| B. | DPDT switch |
| C. | Rotary switch |
| D. | Linear stepper |
| Answer» D. Linear stepper | |
| 5. |
Without any additional circuitry an 8:1 MUX can be used to obtain ____________ |
| A. | Some but not all Boolean functions of 3 variables |
| B. | All function of 3 variables but none of 4 variables |
| C. | All functions of 3 variables and some but not all of 4 variables |
| D. | All functions of 4 variables |
| Answer» E. | |
| 6. |
A combinational circuit is one in which the output depends on the ____________ |
| A. | Input combination at the time |
| B. | Input combination and the previous output |
| C. | Input combination at that time and the previous input combination |
| D. | Present output and the previous output |
| Answer» B. Input combination and the previous output | |
| 7. |
A combinational circuit that selects one from many inputs are ____________ |
| A. | Encoder |
| B. | Decoder |
| C. | Demultiplexer |
| D. | Multiplexer |
| Answer» E. | |
| 8. |
The two input MUX would have ____________ |
| A. | 1 select line |
| B. | 2 select lines |
| C. | 4 select lines |
| D. | 3 select lines |
| Answer» B. 2 select lines | |
| 9. |
4 to 1 MUX would have ____________ |
| A. | 2 inputs |
| B. | 3 inputs |
| C. | 4 inputs |
| D. | 5 inputs |
| Answer» D. 5 inputs | |