ECAT Pre Engineering Physics Chapter 6 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Physics ECAT Pre Engineering Chapter 6 Fluid Dynamics

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Question # 1

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

Question # 2

The irregular and unsteady flow of the fluid is called

Question # 3

The terminal velocity of water droplet of radius 1 x 10-4m and desity 1000 kg m-3descending through air of viscosity 19 x 10-6kg. m-1 s-1 is

Question # 4

The dimensions of viscosity are:

Question # 5

The analysis of fluid motion becomes simplified by using

Question # 6

The fluid which is incompressible and non viscous is called

Question # 7

A high concentration of red blood cells increases its viscosity from

Question # 8

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

Question # 9

The unit of viscosity is SI system is:

Question # 10

What is another name for laminar flow?

Question # 11

Stock's law holds for:

Question # 12

An object moving through a fluid experiences a retarding force called a

Question # 13

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

Question # 14

Bernoulli's equation is based upon law of conservation

Question # 15

The _____ viscous the medium is _____, is the value of terminal velocity of the droplet:

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 When the upward drag force of the fluid becomes equal to downward force of gravity of the droplet, then its velocity:
A. Starts increasing
B. Starts decreasing
C. Becomes constant
D. Is called escape velocity
2 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them
3 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
4 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
5 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
6 If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity
A. v/A = constant
B. A/v = constant
C. Av = constant
D. None
7 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
8 When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:
A. FD-mg
B. Zero
C. mg-FD
D. None of these
9 A flowing liquid possess
A. K.E
B. P.E
C. Pressure Energy
D. All
10 The blood pressure of a person
A. decrease with age
B. increase with age
C. has no effect with age
D. none of them

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