NPTEL Sensors and Actuators Week 1 Assignment Answers 2025
1. Which of the following stimulus is best suitable for the quantities such as “refractive index, reflectivity, absorption” with regards to sensors?
- Acoustic
- Magnetic
- Optical
Answer :- For Answers Click Here
2. Evaluate whether the below statement is true or false:
“A sensor acquires a physical parameter and converts it into a signal suitable for processing (e.g. optical, mechanical, electrical etc.)”
- True
- False
Answer :-
3. MEMS is the acronym for ____________
Micro Electro Material Systems
Micro Electro Mechanical Systems
Micro Electric Machining Systems
Micro Electric Monitoring Systems
Answer :-
4. Choose the best option for the process steps in Silicon boule growth technique.
I. Crystal pulling
II. Beginning of crystal growth
III. Introduction of seed crystal
IV. Formation of crystal
V. Melting of polysilicon
- II-V-III-V-IV
- III-V-II-I-IV
- V-III-II-I-IV
Answer :-
5. Which of the following is not a physical vapor deposition technique?
- Thermal Evaporation
- Sputtering
- Thermal Oxidation
- E-beam Evaporation
Answer :-
6. Evaluate whether the below statement is true or false:
“Extracellular and Intracellular matrices are responsible for giving nutrition to the cells.”
- True
- False
Answer :- For Answers Click Here
7. Choose the best option for the following statement:
“………… means study outside the living body and ……….. means study inside the living body.”
- In vivo, ex vivo
- Ex vivo, in vivo
Answer :-
8. Complete the following with respect to T-cells as discussed in the microfluidic chip for understanding the efficacy of immunotherapy drugs:
“CD4 cells are called ……..cells and CD8 cells are……… cells, respectively.”
- killer, helper
- killer, T-regulatory
- helper, killer
- T-regulatory, helper
Answer :-
9. Which of the following is the desired characteristic of a sensor?
- Specificity should be low
- Power consumption is low
- Signal to noise ratio should be low
Answer :-
10. Which among the following sensors are used to detect VOCs exhaled from breath?
- Ultrasonic sensors
- Gas sensors
- Infrared sensors
Answer :- For Answers Click Here
