Chapter 7 Measurement of Non-Electrical Quantities MCQs

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1. The meters that measure the temperature by using electrical methods are called





2. The meters which can measure high temperature of a hot body without touching them are called





3. These meters can measure high temperature of a hot body from a distance by measuring the radiated energy of hot body





4. The material of resistance wire in resistance type pyrometers





5. Important parts of resistance pyrometers are





6. This should be the property of resistance material used in resistance pyrometer





7. This is a disadvantage of resistance pyrometer





8. Thermocouple pyrometers can continuously be used without deterioration up to this temperature





9. At high temperatures, the thermocouple of a thermocouple pyrometer is kept in





10. This pyrometer is suitable to measure the temperature of a specific point of machine or component





11. This is used to measure temperature up to 3500°C





12. Lux meter is used to measure





13. The instrument used to measure the light is called





14. Types of optical photometers are





15. In this meter, light is measured by comparing the light coming from two sources





16. Trotter type photometer works on this principle





17. In physical photometers, a PMMC meter calibrated in lux and this cell is used





18. In this photometer, human eye is not used to compare the light (of two sources)





19. In photovoltaic cell, a layer of this light sensitive material is used above the iron layer





20. This photometer is not suitable where light changes at the rate of more than 10,000 cycle per seconds





21. Tachometers are used to measure





22. Tachometer may be of this type





23. This is an electrical type tachometer





24. This is not a type of electronic tachometer





25. These tachometers are simple, robust, cheaper, need little repair and their output is ripple free





26. If a disc having white and black geometrical patterns is fixed on the rotating shaft of a motor, the patterns will appear to be stationary when





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