Sensor Interfacing MCQ’s

Read Time:1 Minute, 39 Second

This set of Microcontroller Multiple Choice Questions & Answers (MCQs) focuses on “Sensor Interfacing”.

1. 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

2. 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

3. Which of the following is correct about the word sensors?
a) that senses something
b) it is a type of a transducer that converts one form of energy to another
c) it can produce output in the form of electrical pulses, current or voltage
d) all of the mentioned

4. 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 others have to the Fahrenheit scale
c) one is fast other is slow
d) all of the mentioned

5. LM35 provides _______ V for each degree count?
a) 1
b) 0.1
c) 0.001
d) 10

6. What is the temperature for LM35 sensor if the analog output is 0011 1001?
a) 3
b) 9
c) 57
d) 41

7. Every transducer must be connected with the signal conditioning circuit?
a) true
b) false
c) can’t say
d) depends on the conditions

8. 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

9. In an external hardware, there are how many pins available for the LM35 and the LM34 based sensors?
a) 2
b) 3
c) 10
d) 1

10. Do LM34 and LM35 based sensors have linear output?
a) yes
b) no
c) depends on the conditions
d) can’t say

Happy
Happy
0 %
Sad
Sad
0 %
Excited
Excited
0 %
Sleepy
Sleepy
0 %
Angry
Angry
0 %
Surprise
Surprise
0 %

Average Rating

5 Star
0%
4 Star
0%
3 Star
0%
2 Star
0%
1 Star
0%

Leave a Reply

Your email address will not be published. Required fields are marked *

Previous post ADC, DAC Interfacing MCQ’s
Next post Interfacing with 8255 MCQ’s