# Physics MCQs for entry test ECAT

Solved MCQs of Physics for ECAT entry test and covering the Infinitesimal Fluid Element in Aerodynamics.

In an unbroken stream, the flow of jet of oil can be attributed?
(A). Capillarity
(B). Surface tension
(C). Temperature
(D). Density
(E). None of these

Newtonian’s fluid example is?
(A). Water
(B). Plastic
(C). Colloids
(D). Gel
(E). None of these

The point on the body where the resultant forces act is called enter of pressure.
(A). True
(B). False
(E). None of these

Due to which principle the aircraft flies in the atmosphere?
(A). Archimedes principle
(B). Bernoulli’s principle
(C). Gravitational force
(D). Newton’s law of viscosity
(E). None of these

What is V, In an equation? V=1/ v*D (v)/Dt ___
(A). change in velocity
(B). divergence of velocity
(C). volume
(D). velocity as a function of time
(E). None of these

Under which flow similarity, scale, volume, and length fall?
(A). Geometric Similarity
(B). Kinematic Similarity
(C). Dynamic Similarity
(D). Dimensionless number
(E). None of these

The shock wave is formed in?
(A). subsonic flow
(B). transonic flow
(C). supersonic flow
(D). incompressible flow
(E). None of these

For a fluid which of the following is a suitable flow model?
(A). Finite control volume approach
(B). Infinitesimal fluid element approach
(C). Molecular approach
(D). All three models can be applied based on the requirement
(E). None of these

Under which flow similarity, the force of inertia falls?
(A). Geometric Similarity
(B). Kinematic Similarity
(C). Dynamic Similarity
(D). Dimensionless number
(E). None of these