McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Electrical Engineering .
Chapters
| 1. |
Signal conditioner is used for _________ |
| A. | attenuating the voltage |
| B. | maintaining a constant voltage |
| C. | keeping the voltage zero |
| D. | boosting the voltage |
| Answer» D. boosting the voltage | |
| 2. |
A multiplexer is used for _________ |
| A. | accepting multiple inputs |
| B. | accepting single input |
| C. | accepting multiple outputs |
| D. | accepting single output |
| Answer» A. accepting multiple inputs | |
| 3. |
The time required to complete the conversion of Analog to Digital is ________ the duration of the hold mode of S/H. |
| A. | Greater than |
| B. | Equals to |
| C. | Less than |
| D. | Greater than or Equals to |
| Answer» C. Less than | |
| 4. |
In A/D converter, what is the time relation between sampling period T and the duration of the sample mode and the hold mode? |
| A. | Should be larger than the duration of sample mode and hold mode |
| B. | Should be smaller than the duration of sample mode and hold mode |
| C. | Should be equal to the duration of sample mode and hold mode |
| D. | Should be larger than or equals to the duration of sample mode and hold mode |
| Answer» A. Should be larger than the duration of sample mode and hold mode | |
| 5. |
During which period the op-amps output of sample and hold circuits is processed? |
| A. | Delay period |
| B. | Sample and hold period |
| C. | Sample period |
| D. | Hold period |
| Answer» D. Hold period | |
| 6. |
Sample and hold circuit are used in |
| A. | Analog to Digital modulation |
| B. | Digital to analog modulation |
| C. | Pulse position modulation |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 7. |
The opamp in the Inverting circuit is in __________ |
| A. | Linear region |
| B. | Saturation |
| C. | Cut-off region |
| D. | Non-linear region |
| Answer» A. Linear region | |
| 8. |
In an Inverting Amplifier circuit, the output voltage vo is expressed as a function of ____________ |
| A. | Input current |
| B. | Output current |
| C. | Source voltage |
| D. | Source current |
| Answer» C. Source voltage | |
| 9. |
In the non-inverting configuration of operational amplifier |
| A. | The positive terminal is connected to the ground directly |
| B. | The negative terminal is connected to the ground directly |
| C. | The positive terminal is connected to the power source |
| D. | The negative terminal is connected to the power source |
| Answer» C. The positive terminal is connected to the power source | |
| 10. |
For ideal non-inverting operational amplifier |
| A. | Input and output resistances are infinite |
| B. | Input resistance is infinite and output resistance is zero |
| C. | Input resistance is zero and output resistance is infinite |
| D. | Input and output resistances are zero |
| Answer» B. Input resistance is infinite and output resistance is zero | |
| 11. |
Which is the best example of a single channel data acquisition system? |
| A. | CPM |
| B. | BPM |
| C. | APM |
| D. | DPM |
| Answer» D. DPM | |
| 12. |
Which technique is most widely used in the single channel data acquisition system? |
| A. | Counter type approximation |
| B. | Flash approximation |
| C. | Successive approximation |
| D. | Delta Sigma approximation |
| Answer» C. Successive approximation | |
| 13. |
Multichannel data acquisition system has __________ |
| A. | multiple channels |
| B. | single channel |
| C. | two channels |
| D. | five channels |
| Answer» A. multiple channels | |
| 14. |
Multichannel Analog Multiplexed System is __________ |
| A. | very fast |
| B. | fast |
| C. | slow |
| D. | moderate |
| Answer» C. slow | |
| 15. |
Multichannel Analog Multiplexed System utilises time __________ |
| A. | using a transformer |
| B. | using a capacitor |
| C. | using a flip-flop |
| D. | using a mux |
| Answer» D. using a mux | |
| 16. |
In a Multichannel Analog Multiplexed System __________ |
| A. | A/D converter is used |
| B. | D/A converter is used |
| C. | Sigma delta converter is used |
| D. | Modulator is used |
| Answer» A. A/D converter is used | |
| 17. |
Many channels can be monitored at the same time by __________ |
| A. | Demultiplexing |
| B. | A/D conversion |
| C. | Multiplexing |
| D. | D/A conversion |
| Answer» C. Multiplexing | |
| 18. |
What is the region after the stop band frequency in the magnitude frequency response of a low pass filter? |
| A. | Stop band |
| B. | Pass band |
| C. | Transition band |
| D. | None of the mentioned |
| Answer» A. Stop band | |
| 19. |
Which of the following is not correct for data loggers? |
| A. | Portability |
| B. | Battery less |
| C. | Small |
| D. | All of the mentioned |
| Answer» B. Battery less | |
| 20. |
Which of the following devices are similar to electronic data loggers? |
| A. | Chart recorders |
| B. | Flip flop |
| C. | Memory |
| D. | None of the mentioned |
| Answer» A. Chart recorders | |
| 21. |
Which of the following statement is false? |
| A. | All data loggers are data acquisition system |
| B. | All data acquisition systems are data loggers |
| C. | Data logger and Data acquisition systems are same is operation |
| D. | All of the mentioned |
| Answer» B. All data acquisition systems are data loggers | |
| 22. |
Data logger system have _______________ |
| A. | Slow sampling rate |
| B. | Fast sampling rate |
| C. | Unpredictable sampling rate |
| D. | None of the mentioned |
| Answer» A. Slow sampling rate | |
| 23. |
Which of the following is correct for data loggers? |
| A. | Simple single channel instrument |
| B. | Medium channel instrument |
| C. | Complex multiple channel instrument |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 24. |
Data logger deals with __________________ |
| A. | Digital signals |
| B. | Analog signals |
| C. | Both digital and analog signals |
| D. | None of the mentioned |
| Answer» A. Digital signals | |
| 25. |
What is a multiplexer? |
| A. | It is a type of decoder which decodes several inputs and gives one output |
| B. | A multiplexer is a device which converts many signals into one |
| C. | It takes one input and results into many output |
| D. | It is a type of encoder which decodes several inputs and gives one output |
| Answer» B. A multiplexer is a device which converts many signals into one | |
| 26. |
How many control lines are present in analog to digital converter in addition to reference voltage? |
| A. | Three |
| B. | Two |
| C. | One |
| D. | None of the mentioned |
| Answer» B. Two | |
| 27. |
Find out the integrating type analog to digital converter? |
| A. | Flash type converter |
| B. | Tracking converter |
| C. | Counter type converter |
| D. | Dual slope ADC |
| Answer» D. Dual slope ADC | |
| 28. |
Output of A/D converter is _________ |
| A. | given to an analog display |
| B. | given to a digital display |
| C. | given to a CRO |
| D. | given to a voltmeter |
| Answer» B. given to a digital display | |
| 29. |
What are auxiliary equipments? |
| A. | equipment |
| B. | guard rings |
| C. | devices |
| D. | voltage source |
| Answer» C. devices | |
| 30. |
What is the main function of auxiliary equipment? |
| A. | unit step response |
| B. | ramp response |
| C. | non-linear response |
| D. | linear response |
| Answer» D. linear response | |
| 31. |
What is a digital recorder? |
| A. | records digital data |
| B. | records analog data |
| C. | does not record data |
| D. | Records both digital and analog |
| Answer» A. records digital data | |
| 32. |
Digital acquisition systems are used when _________ |
| A. | bandwidth is high |
| B. | bandwidth is medium |
| C. | bandwidth is zero |
| D. | bandwidth is low |
| Answer» D. bandwidth is low | |
| 33. |
For lower accuracies _________ |
| A. | digital acquisition system is used |
| B. | both digital and analog acquisition systems are used |
| C. | analog acquisition system is used |
| D. | mechanical data acquisition system is used |
| Answer» C. analog acquisition system is used | |
| 34. |
What is a data acquisition system? |
| A. | system used for data processing, conversion and transmission |
| B. | accepts data as an input |
| C. | removes noise |
| D. | boosts the signal |
| Answer» A. system used for data processing, conversion and transmission | |
| 35. |
A typical data acquisition system consists of __________ |
| A. | op amps |
| B. | sensors |
| C. | rectifiers |
| D. | transistors |
| Answer» B. sensors | |
| 36. |
The data acquisition system implies input data collection __________ |
| A. | in mixed signal form |
| B. | in analog form |
| C. | in digital form |
| D. | in the form of binary codes |
| Answer» C. in digital form | |
| 37. |
A data acquisition system provides __________ |
| A. | partial communication |
| B. | ineffective communication |
| C. | effective communication |
| D. | complete communication |
| Answer» C. effective communication | |
| 38. |
Data acquisition system can be used in __________ |
| A. | 10 ways |
| B. | 8 ways |
| C. | 4 ways |
| D. | 2 ways |
| Answer» D. 2 ways | |
| 39. |
Data acquisition system is mainly classified into __________ |
| A. | 2 types |
| B. | 4 types |
| C. | 6 types |
| D. | 8 types |
| Answer» A. 2 types | |
| 40. |
Amplified input signal is digitised through ________ |
| A. | A/D converters |
| B. | D/A converters |
| C. | Rectifiers |
| D. | Sigma delta modulators |
| Answer» A. A/D converters | |
| 41. |
What is pre-amplification? |
| A. | reducing the magnitude of a signal |
| B. | making the magnitude of a signal zero |
| C. | reducing the noise |
| D. | boosting the signal |
| Answer» D. boosting the signal | |
| 42. |
Multiplexing after A/D conversion involves _____________ |
| A. | noisy data |
| B. | mixed signal data |
| C. | analog data |
| D. | digital data |
| Answer» D. digital data | |
| 43. |
Recorder is a ________ |
| A. | measuring instrument |
| B. | voltage source |
| C. | current divider |
| D. | musical tool |
| Answer» A. measuring instrument | |
| 44. |
Efficiency of a recorder is determined using ________ |
| A. | paper |
| B. | chart |
| C. | voltmeter |
| D. | oscilloscope |
| Answer» B. chart | |
| 45. |
Data measurement systems are __________ |
| A. | not flexible |
| B. | rigid |
| C. | less flexible |
| D. | more flexible |
| Answer» D. more flexible | |
| 46. |
Output signal is captured using _________ |
| A. | CRO |
| B. | plotter |
| C. | recorder |
| D. | voltmeter |
| Answer» C. recorder | |
| 47. |
Electronic recorders are of __________ |
| A. | 2 types |
| B. | 4 types |
| C. | 10 types |
| D. | 15 types |
| Answer» A. 2 types | |
| 48. |
How many types of graphic recorders are there? |
| A. | five |
| B. | ten |
| C. | three |
| D. | one |
| Answer» C. three | |
| 49. |
Which one is the application of sensor? |
| A. | Home appliances |
| B. | Automobiles |
| C. | Manufacturing |
| D. | All the above |
| Answer» D. All the above | |
| 50. |
What is the main function of (D/A) or DAC converter? |
| A. | Converts Digital to Analog Signal |
| B. | Converts Analog to Digital signal |
| C. | All of the mentioned |
| D. | None of the mentioned |
| Answer» A. Converts Digital to Analog Signal | |
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