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Primary Sensing Elements & Transducers – 1 – 2

6. Thermocouples are :

(a) passive transducers
(b) active transducers
(c) both (a) and (b) transducers
(d) neither (a) nor (b) transducers

ANSWER

EXPLANATION

7. Capacitive transducers are normally used for :

(a) static measurement
(b) dynamic measurement
(c) both (a) and (b) transducers
(d) neither (a) nor (b) transducers

ANSWER

EXPLANATION

8. Piezo-elctric transducers are :

(a) passive transducers
(b) active transducers
(c) inverse transducers
(d) active and inverse transducers

ANSWER

EXPLANATION

9. The dynamic characteristics of capacitive transducers are similar to those of :

(a) low pass filters
(b) high pass filters
(c) band stop filters
(d) notch filters

ANSWER

EXPLANATION

10. Strain gauge is used :

(a) To convert sound energy into electrical energy
(b) To sense temperature
(c) To convert electrical current into a mechanical displacement
(d) To convert mechanical displacement into a change in resistance

ANSWER

EXPLANATION

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