Que: 121. Why do we need to apply the concept of signal conditioning to a sensor?
|
| a. in order to convert it into a desirable form of energy |
| b. for testing |
| c. for sensing something |
| d. all of the mentioned |
(a). in order to convert it into a desirable form of energy
Que: 122. Which of the following is correct about LM35 based sensors?
|
| a. its output voltage is directly proportional to the Celsius scale |
| b. its output voltage is directly proportional to the Fahrenheit scale |
| c. none of the mentioned |
| d. all of the mentioned |
(a). its output voltage is directly proportional to the Celsius scale
Que: 123. What is the difference between the LM34 and the LM35 based sensors?
|
| a. one requires external calibration while other does not |
| b. one has output voltage proportional to the Celsius scale while other has to the Fahrenheit scale |
| c. one is fast other is slow |
| d. all of the mentioned |
(b). one has output voltage proportional to the Celsius scale while other has to the Fahrenheit scale
Que: 124. Every transducer must be connected with the signal conditioning circuit?
|
| a. TRUE |
| b. FALSE |
| c. can’t say |
| d. depends on the conditions |
Que: 125. LM35 provides _______ V for each degree count?
|
| a. 1 |
| b. 0.1 |
| c. 0.001 |
| d. 10 |
Que: 126. Why for the 8 bit analog input we select Vref as the 2.56V?
|
| a. to obtain each degree count as the 2.56V |
| b. to get 2.56V at the output |
| c. to obtain each degree count as the 10mV |
| d. to get 10mV as the output |
(c). to obtain each degree count as the 10mV
Que: 127. What is the temperature for LM35 sensor if the analog output is 0011 1001?
|
| a. 3 |
| b. 9 |
| c. 57 |
| d. 41 |
Que: 128. In an external hardware, their are how many pins available for the LM35 and the LM34 based sensors?
|
| a. 2 |
| b. 3 |
| c. 10 |
| d. 1 |
Que: 129. Do LM34 and LM35 based sensors have linear output?
|
| a. yes |
| b. no |
| c. depends on the conditions |
| d. can’t say |
Que: 130. 8255 is a ____ pin IC.
|
| a. 16 |
| b. 8 |
| c. 40 |
| d. 60 |