Q2) Choose the most appropriate answer of the followings: Answer (10) only. 1. When the reference junction is the same t

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Q2 Choose The Most Appropriate Answer Of The Followings Answer 10 Only 1 When The Reference Junction Is The Same T 1 (151.29 KiB) Viewed 23 times

Q2) Choose the most appropriate answer of the followings: Answer (10) only. 1. When the reference junction is the same temperature as the measurement junction in a thermocouple circuit, the output voltage (measured by the sensing instrument) is: a) Zero b) Reverse polarity c) Noisy d) AC voltage instead of DC. 2. A is thermally sensitive resistor that exhibits a large change in resistance. a) Thermistor b) Resistance Thermometer c) Thermo couple d) Semiconductor based sensor. 3. Piezoelectric transducer is used for measuring. a) non-electrical quantities b) electrical quantities c) chemical quantities d) any quantity. Page (1/3) 4. Convert a temperature measurement of 250 deg C into Fahrenheit. a) 523.2 F b)-209.7 F c) 482 F d) 23.2 F 5. Causes of incorrect thermocouple measurement: a) No shielding of T/C wires. b) Poor junction connection c) Polarity reversed d) all of the previous. 6. A....... is thermally sensitive resistor that exhibits a large change in resistance. a) Thermistor b) Resistance Thermometer c) Thermo couple d) Semiconductor based sensor 7. Piezoelectricity means a) Electric polarization b) Electric dielectric c) Pressure electricity d)Polar dielectric 8. What is the full form of LASER? a) Light Absorbent and Stimulated Emission of Radiations b) Light Absorbing Solar Energy Resource c) Light Amplification by Stimulated Emission of Radiations d) Light Amplification of Singular Emission of Radiations 9. Optical fibers are not immune to a) electronic disturbances b) magnetic disturbances. c) ambient light interference d) electromagnetic disturbances. 10. Which of the following is most preferred? a) QCM and SAW sensor b) QCM and BAW sensor c) QCM d) All of the mentioned. 11. Converts biochemical events into measurable signals. a) Amplifier b) opamp c) rectifier d) transducer 12. Which of the following biosensors function by the production of a current when a potential is applied between two electrodes? a) Calorimetric biosensor b) Potentiometric biosensor c) Optical biosensor d) Amperometric biosensor. 13.......... biosensors are a class of electrochemical biosensors that transduce the biological events caused by electroactive species at the sensing surface into current signal for the qualification of an analyte within the sample matrix. a) Amperometric b) Dielectric c) Immuno D. Matrix Page (2/3) 14. The type of biosensors that make use of electrodes that are ion-selective in nature in order to transduce the biological response into an electrical signal is known as ....... Biosensors. a) Conductive b) potentiometric c) tranductive d) optical 15. Which sensor uses the principle of Total Internal Reflection? a) Fiber optic sensor b) Electrochemical sensor c) Immunosensor d) Acoustic sensor. (20 Marks)