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Displacement & Strain Measurement – 1 – 1

1. The disadvantages of strain gauge pressure transducer are :

(a) They have a poor frequency response
(b) They do not have a continous resolution
(c) They cannot be powered by a.c. sources
(d) They have a low output

ANSWER

EXPLANATION

2. When the combination of strain gauge-elastic member is used for weighing, it is called :

(a) Dynamometer
(b) Load Cell
(c) Bridge Circuit
(d) None of the given options

ANSWER

EXPLANATION

3. Ceramic materials are used for piezoelectric transducers :

(a) they are polycrystalline in nature
(b )they are basically made of barium titanate
(c) they do not have piezo-electric properties in their original state but these properties are produced by special polarizing treatment
(d) all of the given options

ANSWER

EXPLANATION

4. Quartz and Rochell salt belong to :

(a) natural group of piezo-electric materials
(b) synthetic group of piezo-electric materials
(c) can belong to natural or synthetic group of piezo-elctric materials provided properly polarized
(d) all of the given options

ANSWER

EXPLANATION

5. A typical piezoelectric pressure transducer has a range of :

(a) 0 to 10 kpa
(b) 0 to 100 kpa
(c) 0 to 700 kpa
(d) 0 to 20 kpa

ANSWER

EXPLANATION

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