A model of torpedo is tested in a towing tank at a velocity of 25 m/sec. The prototype is expected to attain a velocity of 5 m/sec. What model scale has been used ?

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A model of a reservior is drained in 4 mts by opening the sluice gate. The model scale is 1: 225. How long should it take to empty the prototype ?

A. 900 minutes B. 4 minutes C. 4 x (225)3/2 minutes D. 4 (225)1/3 minutes E. 4 x V225 minutes...

The capillary rise at 20°C in a clean glass tube of 1 mm bore containing water is approximately____________________?

A. 1 mm B. 5 mm C. 10 mm D. 20 mm E. 30 mm...

A square surface 3 m x 3 m lies in a vertical line in water pipe its upper edge at water surface. The hydrostatic force on square surface is____________________?

A. 9,000 kg B. 13,500 kg C. 18,000 kg D. 27,000 kg E. 30,000 kg...

The region between the separation streamline and the boundary surface of the solid body is known as__________________?

A. wake B. drag C. lift D. boundary layer E. aerofoil section...

The difference of pressure between the inside and outside of a liquid drop is _______________?

A. p = Txr B. p = T/r C. p = T/2r D. p = 2T/r E. none of the above...