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	Rate of flow can be expressed in	A. litre/sec B. litre-sec C. sec/litre D. sec/litre-m
2	The body passing a viscous medium affected by:	A. One force only B. Two forces only C. Four forces D. None of these
3	Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is	A. 1/4 times B. 4 times C. Twice D. 1/2 of 8 cm diameter pipe
4	The law of conservation of mass gives us the	A. equation of continuity B. Bernoulli's theorem C. both of them D. none of them
5	Bernoulli's equation is based upon law of conversation of	A. mass B. momentum C. Energy D. None
6	The terminal velocity of water droplet of radius 1 x 10^-4m and desity 1000 kg m^-3descending through air of viscosity 19 x 10^-6kg. m^-1s^-1is	A. 2.5 ms^-1 B. 3.2 ms^-1 C. 4.3 ms^-1 D. 1.1 ms^-1
7	Blood pressure is measured in torr. Which of the following units could belong to torr?	A. N m^-1 B. N m^-2 C. N m D. N^-1m^-2
8	With increase of temperature, the viscosity of liquid and gases	A. Increases for both B. Decreases for both C. Increases for liquids and decreases for gases D. Decreases for liquids and increases for gases
9	Internal friction of fluid is called	A. Surface tension B. Viscosity C. Resistance D. Cohesive force
10	If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe	A. increases B. decreases C. becomes zero D. is conserved