ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 6 Fluid Dynamics

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

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ECAT Physics Chapter 6 Fluid Dynamics

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Question # 1

Surface tension of water is reduced by adding

Question # 2

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

Question # 3

The flow of an ideal fluid is

Question # 4

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

Question # 5

When a fluid is in motion, its flow can be considered as

Question # 6

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 7

The law of conservation of mass gives us the

Question # 8

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 9

Machine parts are jammed due to:

Question # 10

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

Question # 11

Viscosity is defined as

Question # 12

Rate of flow can be expressed in

Question # 13

A body is moving through a viscous medium eventually comes to rest because of:

Question # 14

The unit of viscosity is SI system is:

Question # 15

The SI unit of viscosity is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The SI unit of viscosity is
A. kg m-1s-1
B. kg ms-1
C. kg m-1s-2
D. kg m-1s
2 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
3 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
4 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
5 At high speed, fluid friction _____ and fuel consumption ___,:
A. Increases, decreases
B. Increases, increases
C. Decreases, increases
D. None of these
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-1 s-1 is
A. 2.5 ms-1
B. 3.2 ms-1
C. 4.3 ms-1
D. 1.1 ms-1
7 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
8 The irregular and unsteady flow of the fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
9 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
10 In a normal healthy person the value of systolic pressure is
A. 75 torr
B. 80 torr
C. 120 torr
D. all of them

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