Measuring Devices and Scales

Measuring Devices and Scales

Total Questions: 52

11. Pyrometer is used to measure -

Chhattisgarh P.C.S. (PRE) 2011 , U.P.P.C.S.(MAINS) 2008 , Uttarakhand P.C.S.(PRE) 2006, U.P.P.C.S.(SPL.)MAINS) 2004,U.P.P.C.S.(PRE) 1998

Correct Answer: (c) Density
Solution:A pyrometer is type of remote-sensing radiation thermometer which is used to measure the high temperature. It is based on Stefan-Boltzmann law which describe that the total radiation emitted by the black body is proportional to the fourth power of its temperature (E∝T⁴). It is used to measure the temperature of distant object such as sun.

12. Which on of the following devices is used to measure the extremely high temperature ? [U.P.P.C.S. (MAINS) 2016]

Correct Answer: (a) Pyrometer
Solution:A pyrometer is type of remote-sensing radiation thermometer which is used to measure the high temperature.It is based on Stefan-Boltzmann law which describe that the total radiation emitted by the black body is proportional to the fourth power of its temperature (E∝T⁴). It is used to measure the temperature of distant object such as sun.

13. Which one of the following thermometer is known as pyrometer ? [U.P.P.C.S. (pre) 2016]

Correct Answer: (b) Radiation thermometer
Solution:

A pyrometer is type of remote-sensing radiation thermometer which is used to measure the high temperature. It is based on Stefan-Boltzmann law which describe that the total radiation emitted by the black body is proportional to the fourth power of its temperature (E∝T⁴). It is used to measure the temperature of distant object such as sun.

14. The thermometer which is used to measure the 2000°C temperature is - [U.P.P.C.S. (pre) 2009]

Correct Answer: (c) Total radiation pyrometer
Solution:A pyrometer is type of remote-sensing radiation thermometer which is used to measure the high temperature.It is used especially for the measurement of moving objects or any surface that cannot be reached or cannot be touched. The temperature is measured by measuring the thermal radiation.

15. Which one of the following can be used to measure temperature above 1500°C [U.P. Lower sub (pre) 2013, U.P.U.D/L.D.A.(SPL) 2010]

Correct Answer: (d) Pyrometer
Solution:Pyrometer is used to measure temperature above 1500°C.

16. 'Pyrheliometer' is used to measuring : [U.P.P.C.S.(PRE) ( RE.EXAM)2015]

Correct Answer: (b) Solar radiation
Solution:Mainly there are two types of devices which is used to measure solar radiation these are : 'Pyrheliometer' and pyranometer. Pyrheliometer it measures the direct beam solar irradiance, which is the amount of sunlight coming directly from the sun onto a surface perpendicular to the rays.

17. What is measured by manometer? [U.P.P.C.S.(PRE) 1990]

Correct Answer: (b) Pressure of gas
Solution:Manometer is an instrument that uses a column of a liquid to measure pressure of liquids or gases commonly referred as pressure measuring instrument.

18. Match List-1 with List-2 and select the correct answer using the codes given below : [U.P.U.D.A/L.D.A. (PRE) 2001]

List-1

(Instrument)

List-2

(Measuring quantity)

a) Ammeterpressure
b) Hygrometerweight
c) Spring balanceelectric current
d) Barometerrelative humidity

code :

ABCD
2341
3421
4123
1234

 

Correct Answer: (b)
Solution:An ammeter is used to measure the electric current in a circuit.

A hygrometer is used to measure the moisture content.

A spring balance is a weighing apparatus that measure weighs by the tension of a spring.

A barometer is used to measure atmospheric pressure.

19. Which one of the following pair is not correctly matched ? [U.P. Lower Sub (pre) 2015]

Correct Answer: (d) Ammeter : Measuring instrument for electric power.
Solution:An ammeter is used to measure the electric current in a circuit not for measuring electric power.Thus, option (d) is not correctly matched.

20. Which instrument is used to measure atmospheric pressure? [U.P.P.S.C. (GIC) 2010 , M.P.P.C.S.( PRE) 2000]

Correct Answer: (b) Barometer
Solution:A barometer is a scientific instrument used in meteorology to measure atmospheric pressure. A sudden fall of mercury in a barometer indicates the thunderstorms.