ECAT Pre Computer Science Chapter 6 MCQ Test With Answer

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

The effect of friction between different layers of a flowing fluid is described in terms of

Question # 2

Bernoulli's equation is important in the field of

Question # 3

A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is

Question # 4

How much force is required to slide one layer of the liquid over the other layer is measured by

Question # 5

The analysis of fluid motion becomes simplified by using

Question # 6

The equation of continuity
A1V1= A2V2is for the flow of

Question # 7

A water hose with an internal diameter of 20 mm at the outlet discharges 30 kg of water in 60 s. What is water speed at the outlet if density of water is 1000 kg/m3during its steady flow

Question # 8

The direction of the streamlines is the same as the direction of the

Question # 9

When a water droplet falls through air, the net force on it is

Question # 10

Unit of viscosity is:

Question # 11

The resistance offered by a fluid to a solid moving inside it is called:

Question # 12

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 # 13

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

Question # 14

In a normal healthy person the value of systolic pressure is

Question # 15

The flow of an ideal fluid is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?
A. fluid B
B. fluid A
C. both take the same time
D. not possible to determine from given information
2 When weight of an object falling freely becomes equal to the drag force, then the body will move with
A. increasing speed
B. decreasing speed
C. constant speed
D. none of them
3 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
4 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
5 Rate of flow can be expressed in
A. litre/sec
B. litre-sec
C. sec/litre
D. sec/litre-m
6 In deriving the Bernoulli's equation, we assume that the fluid is
A. incompressible
B. no viscous
C. flows in a steady manner
D. all of them
7 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
8 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them
9 The flow of an ideal fluid is
A. streamline flow
B. incompressible flow
C. non-viscous
D. all of the above
10 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

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