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

Deep water almost runs still when surface water flow in rivers. What does it explains

Question # 2

The application of Bernoulli's equation is

Question # 3

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

Question # 4

In a normal healthy person the value of systolic pressure is

Question # 5

The body will move with terminal velocity when it acquires

Question # 6

A tube is tapered from 20 cm diameter to 2 cm diameter, the velocity at the first cross-section is 50 cm/s, then the velocity at the second cross-section is

Question # 7

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

Question # 8

Blood is an

Question # 9

In deriving the Bernoulli's equation, we assume that the fluid is

Question # 10

The term Brownian movement refers to

Question # 11

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

Question # 12

According to slok's law, drag force depends on

Question # 13

Substances that flow easily have

Question # 14

Unit of viscosity is:

Question # 15

The equation of continuity
A1V1= A2V2is for the flow of

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N
2 The law of conservation of energy gives us
A. equation of continuity
B. Bernoulli's theorem
C. both of them
D. none of them
3 Two copper balls of 1 cm and 2 cm in diameter are simultaneously dropped in the same viscous medium. The terminal velocity of bigger ball is:
A. Not affected due to its size
B. Twice that of small size ball
C. Four times that of small size ball
D. 1/4th of that of small size ball
4 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these
5 The pressure will change in the pipe, as the fluid moves through that pipe of varying
A. cross-section
B. height
C. none of them
D. both of them
6 Stoke;s law is not applicable when the speed of the object moving through a fluid is:
A. Zero
B. Small
C. Large
D. None of these
7 Fluid friction is _____ the friction between two solid surfaces:
A. Greater than
B. Smaller than
C. Equal to
D. None of these
8 Drag force increases if speed of the object moving through the fluid:
A. Increases
B. Decreases
C. Remains constant
D. None of these
9 Deep water almost runs still when surface water flow in rivers. What does it explains
A. Magnus effect
B. Equation of continuity
C. Surface energy
D. Bernoulli's equation
10 The smooth or steady stream-line flow is know as
A. Laminar flow
B. Turbulent flow
C. Both a and b
D. None of the above

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