Hydraulic and Fluid Machines - Interview Questions | Exam2Win

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121. The ratio of absolute viscosity to mass den-sity is known as

A. specific viscosity

B. viscosity index

C. kinematic viscosity

D. coefficient of viscosity

E. coefficient of compressibility.

Explanation:

122. The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as

A. meta centre

B. centre of pressure

C. centre of buoyancy

D. centre of gravity

E. none of the above.

Explanation:

123. Alcohol is used in manometers because

A. it has low vapour pressure

B. it is clearly visible

C. it has low surface tension

D. it can provide longer column due to low density

E. is provides suitable meniscus.

Explanation:

124. Specific weight of sea water is more that of pure water because it contains

A. dissolved air

B. dissolved salt

C. suspended matter

D. all of the above

E. heavy water.

Explanation:

125. The total pressure on the surface of a vertical sluice gate 2 m x 1 m with its top 2 m surface being 0.5 m below the water level will be

A. 500 kg

B. 1000 kg

C. 1500 kg

D. 2000 kg

E. 4000 kg.

Explanation: