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51.

The recorder used in spectrophotometers has ______ chart speeds.(a) three(b) five(c) seven(d) nineI have been asked this question during an interview.Query is from Pneumotachometers topic in portion Pulmonary Function Analysers of Biomedical Instrumentation

Answer»

The correct option is (C) seven

For explanation I would SAY: The recorder used with spectrophotometers have FOUR wavelength SCANNING speeds (100, 50, 20 and 5 nm/mm) and seven CHART speeds (10, 5, 2, 1, 0.5, 0.2 and 0.1 inch/mm). It has a sensitivity of 100 mV absorbance units or 100 mV/100% T.
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52.

The recorder used with spectrophotometers has _____ wavelength scanning speeds.(a) one(b) two(c) three(d) fourI got this question during a job interview.I want to ask this question from Pneumotachometers in division Pulmonary Function Analysers of Biomedical Instrumentation

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Right answer is (d) four

To explain I would say: The recorder used with spectrophotometers have four WAVELENGTH scanning speeds (100, 50, 20 and 5 nm/mm) and seven chart speeds (10, 5, 2, 1, 0.5, 0.2 and 0.1 inch/mm). It has a SENSITIVITY of 100 mV absorbance UNITS or 100 mV/100% T.
Discussion
53.

The blood plasma gets separated by centrifugation.(a) True(b) FalseThe question was asked by my school teacher while I was bunking the class.The above asked question is from Pulmonary Function Measurement in division Pulmonary Function Analysers of Biomedical Instrumentation

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Correct option is (a) TRUE

Easy explanation: True, During centrifugation, the HEAVY BLOOD cells get packed at the bottom of the CENTRIFUGE tube and the plasma can thus be separated. The plasma is a viscous, LIGHT yellow liquid, i.e. almost clear in the fasting stage.
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