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

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 # 2

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:

Question # 3

The irregular and unsteady flow of the fluid is called

Question # 4

Bernoulli's equation is based upon law of conversation

Question # 5

Pressure exerted by a gas on the walls of its container in due to

Question # 6

The un-steady streamline flow is called

Question # 7

The fluid which is incompressible and non viscous is called

Question # 8

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

Question # 9

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

Question # 10

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 11

The mass of fluid passing through any cross-section per unit time is called

Question # 12

With increase of temperature, the viscosity of liquid and gases

Question # 13

Blood is an

Question # 14

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 What are the SI base units of the coefficient of viscosity
A. Kg m s-2
B. kgm2 s-2
C. Kg m s-1
D. kg m-1s-1
2 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
3 When a water droplet falls through air, the net force on it is
A. Net force = drag force - weight
B. Net force = weight - drag force
C. Net force = drag force + weight
D. Net force = weight + drag force
4 In a normal healthy person the value of diastolic pressure is
A. 75 - 80 torr
B. 100 torr
C. 120 torr
D. none of them
5 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
6 Liquids and gasses have
A. zero viscosity
B. non-zero viscosity
C. very large viscosity
D. very small viscosity
7 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
8 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
9 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them
10 In case of streamed lined flow of liquid, the loss of energy is
A. Maximum
B. Minimum
C. Infinite
D. equal to what is in turbulent flow

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