Operation of McLeod gauge used for low pressure measurement is based on the principle of_________________?

Related Mcqs:

1. Working principle of dead weight pressure gauge tester is based on_______________?

   A. Pascal’s law
   B. Dalton’s law of partial pressure
   C. Newton’s law of viscosity .
   D. Avogadro’s hypothesis
   E. Second law of thermodynamic

2. Pitot tube is used for measurement of_________________?

   A. pressure
   B. flow
   C. velocity
   D. dsscharge
   E. viscosity

3. Principle of similitude forms the basis of_________________?

   A. comparing two identical equipments
   B. designing models so that the result can be converted to prototypes
   C. comparing similarity between design and actual equipment
   D. hydraulic designs
   E. performing acceptance tests

4. Duplex feed pumps are used in small steam boilers. These operate on the principle of_________________?

   A. centrifugal pump
   B. axial flow pump
   C. gear pump
   D. ejector pump
   E. reciprocating pump

5. For low speed operation or for idling in petrol engines, the engine requirements are for_______________?

   A. lean mixture
   B. theoretically correct mixture
   C. rich mixture
   D. any type of mixture
   E. lean/rich mixture depending upon capacity of engine

6. For low load operation, more suitable (economical) engine is_______________?

   A. S.I. engine
   B. C.I. engine
   C. both are equally good
   D. multicylinder engine
   E. two stroke engine

7. The dry saturated steam at very low pressure, (5-10 kg/cm2) when throttled to atmosphere will become________________?

   A. wet
   B. superheated
   C. remain dry satruated
   D. dry
   E. none of the above

8. It is required to produce large amount of steam at low pressure. Which boiler should be used ?

   A. pulverised fuel fired boiler
   B. cochran boiler
   C. lancashire boiler
   D. babcock and wilcox boiler
   E. stoker fired boiler

9. Expanding steam to a very low pressure (high vacuum) in steam engines is _________________?

   A. desirable
   B. economical
   C. essential
   D. optional
   E. uneconomical

10. The pressure in the air space above an oil (sp. gr. 0.8) surface in a tank is 0.1 kg/cm”. The pressure at 2.5 m below the oil surface will be __________________?

    A. 2 metres of water column
    B. 3 metres of water column
    C. 3.5 metres of water column
    D. 4 m of water column
    E. none of the above