ECAT Pre Engineering Physics Chapter 6 online mcq test with answers for chapter 6 (Fluid Dynamics)

Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics Online Test

Sr. #	Questions	Answers Choice
1	A massive object falls through a fluid:	Faster Slower Slowest None
2	High speed meteors rushing through air reduces to ashes because of:	Force of gravity High resistance of air Drag force None of these
3	Stock's law holds for:	Motion through free space Motion through viscous medium Bodies of all shapes None of these
4	Viscosity of water is ______ that of air but ___ that of plasma.	More, more Less, more Less, less More, less
5	Fluid friction is _____ the friction between two solid surfaces:	Greater than Smaller than Equal to None of these
6	Density of fluid is defined as:	Its volume to mass ratio Product of volume and mass Its mass of volume ratio None of these
7	Unit of viscosity is:	Kg m<sup>-1</sup>sec<sup>-1</sup> N s m<sup>-2</sup> J s m<sup>-3</sup> All of these
8	Glycerin has viscosity _____ the viscosity of water:	More than Equal to Less than None of these
9	A body is moving through a viscous medium eventually comes to rest because of:	Force of gravity Force of friction Its weight Both A and C
10	N s m^-2is unit of:	Drag force Pressure Surface tension Coefficient of viscosity
11	Machine parts are jammed due to:	Increasing in viscosity of lubricant Decreasing in viscosity of lubricant Decreasing in surface tension of lubricant None of these
12	The body passing a viscous medium affected by:	One force only Two forces only Four forces None of these
13	The resistance offered by a fluid to a solid moving inside it is called:	Drag force Surface force Viscosity None of these
14	The property of fluids due to which they resist their own flow is called:	Drag force Surface tension Viscosity None of these
15	A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is	50 m/s 20 m/s 40 cm/s 5 cm/s

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