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 product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called

Question # 2

The velocity of falling raindrops attains limited value because of

Question # 3

The fluid is incompressible, if itsdensity is

Question # 4

When the speed of a body in a fluid increases then the drag force

Question # 5

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

Question # 6

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

Question # 7

When the droplet moves with terminal velocity in a fluid, the net force acting on the droplet is:

Question # 8

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

Question # 9

Bernoulli's equation is important in the field of

Question # 10

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 # 11

The product of cross-sectional area of the pipe and the fluid speed at any pint along the pipe is

Question # 12

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

Question # 13

A massive object falls through a fluid:

Question # 14

What are the SI base units of the coefficient of viscosity

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
2 The term Brownian movement refers to
A. irregular motions of small particles suspended in a fluid
B. convection currents in a liquid or gas
C. convection currents in a gas but not in a liquid
D. the stretching of a body beyond its elastic limit
3 The pressure will be low where the speed of the fluid is
A. Zero
B. High
C. Low
D. Constant
4 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
A. 50 m/s
B. 20 m/s
C. 40 cm/s
D. 5 cm/s
5 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
6 Blood has a density
A. Equal to water
B. Greater then water
C. Lesser then water
D. None of these
7 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
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
A. 1/4 times
B. 4 times
C. Twice
D. 1/2 of 8 cm diameter pipe
9 The smooth or steady streamline flow is known as
A. laminar flow
B. turbulent flow
C. both of them
D. none of them
10 Machine parts are jammed due to:
A. Increasing in viscosity of lubricant
B. Decreasing in viscosity of lubricant
C. Decreasing in surface tension of lubricant
D. None of these

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