Hydraulic Fluid Mechanics Objective Questions and Answers

477. Falling drops of water become spheres due to the property of

478. Whenever a plate is held immersed at some angle with the direction of flow of the liquid, it is subjected to some pressure. The component of this pressure, in the direction of flow of the liquid, is known as

A. lift

B. drag

C. stagnation pressure

D. bulk modulus

Discussion

479. The height of a water column equivalent to a pressure of 0.15 MPa is

480. The total energy of a liquid particle in motion is equal to

A. pressure energy + kinetic energy + potential energy

B. pressure energy - (kinetic energy + potential energy)

C. potential energy - (pressure energy + kinetic energy

D. kinetic energy - (pressure energy + potential energy)

Discussion

481. In case of flow through parallel pipes,

A. The head loss for all the pipes is same

B. The total discharge is equal to the sum of discharges in the various pipes

C. The total head loss is the sum of head losses in the various pipes

D. Both (A) and (B)

Discussion

482. Coefficient of velocity is defined as the ratio of

A. actual velocity of jet at vena contracta to the theoretical velocity

B. area of jet at vena contracta to the area of orifice

C. actual discharge through an orifice to the theoretical discharge

D. none of the above

Discussion

483. A differential manometer is used to measure

A. atmospheric pressure

B. pressure in pipes and channels

C. pressure in venturimeter

D. difference of pressures between two points in a pipe

Discussion

Hydraulic Fluid Mechanics MCQs