ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

At the starting point of the free fall motion of an object, its acceleration will be

Question # 2

The property of fluids due to which they resist their own flow is called:

Question # 3

In Bernoulli's theorem the relation between velocity and pressure is

Question # 4

With increase of temperature, the viscosity of liquid and gases

Question # 5

The internal pressure of the blood is

Question # 6

A flowing liquid possess

Question # 7

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 8

A high concentration of red blood cells increases its viscosity from

Question # 9

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 10

If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be

Question # 11

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 12

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 13

Bernoulli's equation is based upon law of conservation

Question # 14

Blood is an

Question # 15

Blood has a density

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
2 The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2
A. 20
B. 200
C. 2000
D. 20,000
3 What is another name for laminar flow?
A. streamline
B. unsteady flow
C. turbulent flow
D. both (a) and (b)
4 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
5 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
6 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them
7 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-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
8 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None
9 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
10 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these

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