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

According to Stoke's law, drag force depends on

Question # 2

In a normal healthy person the value of systolic pressure is

Question # 3

In a surface tension experiment with a capillary tube water rises up to 0.1 m. if the same experiment is repeated on an artificial satellite, which is resolving around the earth, water will rise in the capillary tube up to a height of

Question # 4

The electrical forces between the molecules of a liquid are

Question # 5

When each particle of the fluid moves along a smoth path, this path is known as

Question # 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

Question # 7

Which of the following options states the names of fluids in the order of increasing viscosity?

Question # 8

The pressure will be low where the speed of the fluid is

Question # 9

Which of the following options correctly states the equation of continuity for an ideal fluid?

Question # 10

If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe

Question # 11

Matter is made up of very tiny particles called

Question # 12

In a _____ flow, each particle of the fluid is called a streamline and different streamlines ______cross each other.

Question # 13

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

Question # 14

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

Question # 15

In case of streamed lined flow of liquid, the loss of energy is

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 Blood is an
A. Compressible fluid
B. incompressible fluid
C. hard
D. none of them
3 N s m-2is unit of:
A. Drag force
B. Pressure
C. Surface tension
D. Coefficient of viscosity
4 The terminal velocity of a small size spherical body of radius R moving in a fluid varies as
A. R
B. R2
C. 1/R
D. (1/R)2
5 The force exerted by the fluid in a hydraulic pump on the piston is 10 cm2, the fluid pressure on the piston is, in N/cm2
A. 20
B. 200
C. 2000
D. 20,000
6 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
7 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
8 The rain drop falling from the sky reach the ground with
A. Constant terminal velocity
B. Constant gravitational acceleration
C. Variable acceleration
D. acceleration greater than g
9 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
10 If water rises 4 cm in a long, thin tube because of capillary action, then, under corresponding conditions of use, the rise (in the tube) of a liquid whose density is 2 g/cm2will be
A. 1 cm
B. 2 cm
C. 8 cm
D. None

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