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

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 2

Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:

Question # 3

A high concentration of red blood cells increases its viscosity from

Question # 4

The equation of continuity is

Question # 5

In a normal healthy person the value of systolic pressure is

Question # 6

Fire fighters have a jet attached to the head of their water pipes in order to head of their water pipes in order to

Question # 7

Fluids resist force, This property is called

Question # 8

The electrical forces between the molecules of a liquid are

Question # 9

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

Question # 10

N s m-2is unit of:

Question # 11

The rain drop falling from the sky reach the ground with

Question # 12

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?

Question # 13

Fog droplets are suspended in air when their weight is balanced by:

Question # 14

Ball pen functions on the principle of

Question # 15

At low speeds, the drag force is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
2 The velocity of falling raindrop attains limited value because of
A. Up trust of air
B. Viscous force exerted by air
C. Surface tension effect
D. Air currents atmosphere
3 Bernoulli's equation is important in the field of
A. Electrical circuit
B. Magnetism
C. Photoelectric effect
D. Flow of fluids
4 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
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
5 The un-steady streamline flow is called
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
6 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2
7 Bernoulli's equation is based upon law of conversation
A. Mass
B. Momentum
C. Energy
D. None of these
8 Internal friction of fluid is called
A. Surface tension
B. Viscosity
C. Resistance
D. Cohesive force
9 The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is
A. very high
B. very low
C. constant
D. zero
10 Above a certain velocity of a fluid is called
A. turbulent flow
B. steady flow
C. either of them
D. both of them

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