Instrumentation Engineering MCQs

Q:

Which of the following is correct for water activity?

A) Ratio of relative equilibrium moisture and 10 B) Ratio of relative equilibrium moisture and 100
C) Ratio of relative equilibrium moisture and 1000 D) Relative equilibrium moisture
 
Answer & Explanation Answer: B) Ratio of relative equilibrium moisture and 100

Explanation: Ratio of relative equilibrium moisture at c and 100 gives water activity(AW).

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66
Q:

FICT stands for ______________

A) Forced iso concentration technique B) Flouro iso concentration technique
C) Flouro ion concentration technique D) Flouro ion carry transfer
 
Answer & Explanation Answer: B) Flouro iso concentration technique

Explanation: FICT stands for flouro iso concentration technique.

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41
Q:

For moisture measurement, microwave of ____________ wavelength is used.

A) Less than 3um B) Less than 3nm
C) Less than 3mm D) less than 3cm
 
Answer & Explanation Answer: D) less than 3cm

Explanation: For moisture measurement, microwave of wavelength up to 3cm is used.

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54
Q:

Which of the following is not used for measuring moisture?

A) IR absorption method B) Microwave loss method
C) Both IR absorption and microwave loss method D) None of the mentioned
 
Answer & Explanation Answer: D) None of the mentioned

Explanation: Both IR absorption method and the microwave loss method are used for measuring moisture in a substance.

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53
Q:

Which of the following IR radiation is used in measuring relative humidity?

A) Wavelength of less than 1um B) Wavelength less than 3um
C) Wavelength greater than 10um D) Wavelength of any value
 
Answer & Explanation Answer: B) Wavelength less than 3um

Explanation: IR radiation of wavelength less than 3um is used for measuring relative humidity.

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50
Q:

Which of the following represents RH value of moisture contained sample?

A) Water activity B) Moisture content
C) Ion concentration D) Acidity
 
Answer & Explanation Answer: A) Water activity

Explanation: Water activity(AW) can be defined as the RH value obtained from measuring moisture containing sample.

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52
Q:

PICT has high sensitivity than FICT.

A) True B) False
 
Answer & Explanation Answer: A) True

Explanation: Proton isoconcentration technique is far sensitive than Flouro iso concentration technique.

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38
Q:

PICT stands for ______________________

A) Proton iso-concentration technique B) Perchloro ion concentration technique
C) Proton iso control technique D) Proton inhibition cell technique
 
Answer & Explanation Answer: A) Proton iso-concentration technique

Explanation: PICT stands for proton iso concentration technique.

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