ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

Top Scorers Of Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics MCQ`s Test

Sr.#	Question	Answer
1	The analysis of fluid motion becomes simplified by using	A. law of conservation B. law of conservation of energy C. both of them D. none of them
2	When weight of an object falling freely becomes equal to the drag force, then the body will move with	A. increasing speed B. decreasing speed C. constant speed D. none of them
3	The drag force acting on a spherical droplet of radius 10^-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10^-7m/sec. The units comes out to be:	A. 10^-16N B. 10^-14N C. 10^-12N D. 10^-10N
4	Blood has a density	A. Equal to water B. Greater then water C. Lesser then water D. None of these
5	In deriving the Bernoulli's equation, we assume that the fluid is	A. incompressible B. no viscous C. flows in a steady manner D. all of them
6	The SI unit of viscosity is	A. kg m^-1s^-1 B. kg ms^-1 C. kg m^-1s^-2 D. kg m^-1s
7	The body passing a viscous medium affected by:	A. One force only B. Two forces only C. Four forces D. None of these
8	Ball pen functions on the principle of	A. Viscosity B. Boyle's law C. Gravitational force D. Surface tnesion
9	At the starting point of the free fall motion of an object, its acceleration will be	A. maximum B. minimum C. zero D. none of them
10	When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:	A. Starts increasing B. Starts decreasing C. Becomes constant D. Is called escape velocity