PPSC Sub Engineer Civil Past Papers

Bernoulli equation deals with the law of conservation of:

A. mass
B. momentum
C. energy
D. work

Cavitation is caused by:

A. high velocity
B. high pressure
C. weak material
D. low pressure

Hydrometer is used to determine :

A. specific gravity of liquids
B. specific gravity of solids
C. specific gravity of gases
D. relative humidity

The upper surface of a weir over which water flows is known is :

A. crest
B. nappe
C. sill
D. weir top

In a free vortex motion, the radial component of velocity everywhere is :

A. maximum
B. minimum
C. zero
D. non-zero

General energy equation holds for :

A. steady flow
B. turbulent flow
C. laminar flow
D. non-uniform flow

The flow which neglects changes in a transverse direction is known as :

A. one dimensional flow
B. uniform flow
C. steady flow
D. turbulent flow

Flow occurring in a pipeline when a valve is being opened is :

A. steady
B. unsteady
C. laminar
D. vortex

For measuring flow by a venturimeter, if should be installed in :

A. vertical line
B. horizontal line
C. inclined line with flow downward
D. In any direction and in any location

An ideal flow of any fluid must satisfy :

A. Pascal law
B. Newton’s law of viscosity
C. boundary layer theory
D. continuity equation

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