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

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 # 2

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

Question # 3

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 4

The law of conservation of energy gives us

Question # 5

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

Question # 6

Bernoulli's equation is based upon law of conservation

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

Two water pipes of diameters 4 cm and 8 cm are connected with a supply line. The velocity of flow of water in the pipe 4 cm diameter is

Question # 9

With increase of temperature, the viscosity of liquid and gases

Question # 10

According to Stoke's law, drag force depends on

Question # 11

N s m-2is unit of:

Question # 12

The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 13

0.10 cm can be written as:

Question # 14

The equation of continuity
A1V1= A2V2is for the flow of

Question # 15

The pressure will change in the pipe, as the fluid moves through that pipe of varying

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
2 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
3 A high concentration of red blood cells increases its viscosity from
A. 3 - 5 times that of mercury
B. 5 - 8 times that of mercury
C. 3 - 5 times that of water
D. 5 - 8 times that of water
4 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
5 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these
6 In the case of an incompressible fluid in stead flow the net rate of flow of mass entering one end of the tube of flow is equal to the net rate of flow of mass leaving the other end. This equation is called
A. Quadratic equation
B. Equation of discontinuity
C. Equation of continuity
D. None of the above
7 Which of the following options correctly states the equation of continuity for an ideal fluid?
A. A1A2= V1V2
B. A1/A2= V2/V1
C. A1/A2= V1/V2
D. none of the above
8 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
9 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
10 Where the streamlines are very far apart from each other, the pressure will be
A. low
B. zero
C. high
D. all of them

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