Q. Optical radiations involve _________

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Q. A quartz crystal is _________

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Q. Microphone converts light into heat.

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Q. A piezoelectric transducer is used as an ignition source for a cigarette.

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Q. A piezoelectric transducer has a _________

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Q. In kitchen applications a piezoelectric crystal is used for _________

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Q. When a compressive force is applied to a quartz crystal then ____________

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Q. Piezoelectric transducer consists of _________

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Q. Piezoelectric crystals produce _________

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Q. Piezoelectric crystals __________

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Q. Piezoelectric transducer is used for measuring __________

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Q. For accurate temperature measurement in a thermocouple the __________

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Q. Which of the following should satisfy for measuring higher temperatures using a thermocouple?

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Q. If two different metals are joined forming a closed circuit an electric current flows.

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Q. Most suitable material for a thermocouple is ________

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Q. Thermocouple must provide ________

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Q. Chromel-constantan thermopile consists of 25 thermocouples.

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Q. What is a thermopile?

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Q. The algebraic sum of e.m.f.s in a circuit containing thermocouples is __________

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Q. Commonly used thermoelectric transducer is __________

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