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

Viscosity of water is ______ that of air but ___ that of plasma.

Question # 2

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

Question # 3

Fluid friction is _____ the friction between two solid surfaces:

Question # 4

Bernoulli's equation is applicable for

Question # 5

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 6

When the different streamlines cannot cross each other, then this condition is known as

Question # 7

The electrical forces between the molecules of a liquid are

Question # 8

When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:

Question # 9

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 # 10

Viscosity is defined as

Question # 11

The value for systolic blood pressure for a normal healthy person is

Question # 12

The study of fluid in motion basically involves law of conservation of:

Question # 13

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

Question # 14

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

Question # 15

A device used to measure the speed of liquid flow is known as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
2 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
A. 125 J
B. 90 J
C. 160 J
D. 85 J
3 The maximum drag force on a falling sphere is 9.8 N, it weight is
A. 1 N
B. 9.8 N
C. 4.9 N
D. Cannot be calculated
4 At high altitude the blood oozes out of the nose and ear because
A. The blood pressure increase at high altitudes
B. The percentage of oxygen in the air increase
C. The atmospheric pressure decrease there
D. The density of blood decrease at high altitudes
5 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
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 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
8 The body passing a viscous medium affected by:
A. One force only
B. Two forces only
C. Four forces
D. None of these
9 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
10 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity

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