Very low pressure is expressed in microns (μ), which is equal to ____________ mm of Hg column (absolute) at 0°C?

Related Mcqs:

1. Which is the most suitable instrument for measuring pressure below 3 microns ?

   A. Mcleod gauge B. Alphatron C. Ionisation gauge D. Bourdon gauge...

2. Pressure of 0.0001 absolute psi can be measured by _____________ gauge?

   A. Mcleod B. Pirani C. Thermocouple D. None of these...

3. Pressure of 0.01 psi (absolute) can be measured by ______________ gauge?

   A. Ionisation B. Pirani C. Mcleod D. None of these...

4. Liquid column manometers are used for measuring the pressure ______________ kgf/cm2?

   A. > 2 (gage) B. < 3 (gage) C. < 10 (gage) D. < atmospheric...

5. A negative gain margin expressed in decibels means a/an ____________ system?

   A. Stable B. Unstable C. Critically damped D. None of these...

6. Vapour actuated pressure spring thermometer does not require ambient temperature compensation. Ambient temperature compensation is provided in gas or liquid expansion pressure spring thermometer by__________________?

   A. Making the volume of thermometer bulb as large as conveniently possible B. Reducing the volume of the capillary to a minimum C. Reducing the volume of the receiving element to a minimum D. All A , B & C....

7. The pressure sensing element of elastic type pressure gauge is never made in the form of a_________________?

   A. Bellow B. Diaphragm C. Strip D. Bourdon tube...

8. The frequency response of a dynamic element shows a constant magnitude ratio at all frequencies. The element exhibits a negative phase shift at all frequencies. The absolute value of the phase shift increases linearly with frequency. The element has the transfer function ?

   A. e-ηS B. (T1S + 1)/(T2S + 1) C. (T1S/(T2S + 1) D. (T1S + 1)/(T2S...

9. Platinum resistance thermometer can be used upto antimony point which is ____________ °C, and is the temperature of equilibrium between solid antimony & liquid antimony at normal atmospheric pressure?

   A. 961.93 B. 630.74 C. 1064.43 D. 1261.93...

10. The ____________ of a vapor pressure thermometer is a secondary element ?

    A. Pointer B. Bourdon tube C. Bulb D. None of these...