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

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

Question # 2

The resistance offered by a fluid to a solid moving inside it is called:

Question # 3

Blood pressure is measured in torr. Which of the following units could belong to torr?

Question # 4

The value of viscosity of a fluid is dependent on (at constant temperature)

Question # 5

Bernoulli's equation is applicable for

Question # 6

Blood vessels can be stretch like rubber, therefore they are

Question # 7

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

Question # 8

Stoke;s law is not applicable when the speed of the object moving through a fluid is:

Question # 9

The blood pressure of a person

Question # 10

The equation of continuity
A1V1= A2V2is for the flow of

Question # 11

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:

Question # 12

Viscosity is defined as

Question # 13

Bernoulli's equation is the fundamental equation in fluid dynamics, which relates pressure to fluid

Question # 14

According to Stoke's law, drag force depends on

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 A body is floating in a liquid. The up thrust on the body is
A. Equal to weight of liquid displaced
B. Zero
C. Less than the weight of liquid displaced
D. Weight of body-weight of liquid displaced
2 A fluid at a certain point has 50 J of potential energy per unit volume, 75 J of kinetic energy per unit volume,and 35 J of pressure energy per unit volume. the total energy of the fluid is
A. 125 J
B. 90 J
C. 160 J
D. 85 J
3 Density of fluid is defined as:
A. Its volume to mass ratio
B. Product of volume and mass
C. Its mass of volume ratio
D. None of these
4 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
5 Bernoulli's equation is based upon law of conservation
A. Mass
B. Momentum
C. Energy
D. None of these
6 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
7 The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe is called
A. constant rate
B. volume rate
C. flow rate
D. steady rate
8 With increase of temperature, the viscosity of liquid and gases
A. Increases for both
B. Decreases for both
C. Increases for liquids and decreases for gases
D. Decreases for liquids and increases for gases
9 Viscosity is defined as
A. the friction between fluid and its container's walls
B. the internal friction between two layers of fluid
C. the resistance to flow a fluid experiences
D. the extent to which outside factors effect the fluid's flow
10 Bernoulli's equation is important in the field of
A. Electrical circuit
B. Magnetism
C. Photoelectric effect
D. Flow of fluids

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