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 SI unit of viscosity is

Question # 2

At high speed, fluid friction _____ and fuel consumption ___,:

Question # 3

At the starting point of the free fall motion of an object, its acceleration will be

Question # 4

Bernoulli's equation is applicable for

Question # 5

A high concentration of red blood cells increases its viscosity from

Question # 6

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 # 7

The law of conservation of energy gives us

Question # 8

The analysis of fluid motion becomes simplified by using

Question # 9

The body passing a viscous medium affected by:

Question # 10

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

Question # 11

Bernoulli's equation is important in the field of

Question # 12

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

Question # 13

The maximum drag force on a falling sphere is 9.8 N, it weight is

Question # 14

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

Question # 15

Viscosity is defined as

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 The dimensions of viscosity are:
A. M2L-1T-2
B. M-1L1T-1
C. M-1L-1T
D. ML-1T-1
2 The fluid which is incompressible and non viscous is called
A. Ideal fluid
B. Non-ideal fluid
C. Prefect fluid
D. All
3 The unit of viscosity is SI system is:
A. Kg-1m sec-1
B. Kgm-1 sec-1
C. Kg-1m-1 sec
D. None of these
4 Under normal circumstances, the volume of blood is sufficient to keep the vessels
A. flatted for all times
B. inflated for all times
C. inflated for small times
D. none of them
5 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
6 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
7 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
8 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
A. 1.3 m/s
B. 1.6 m/s
C. 1.9 m/s
D. 2.2 m/s
9 The fluid is incompressible, if itsdensity is
A. zero
B. constant
C. very high
D. very small
10 In a container having water filled up to a height h, a hole is made in the bottom. The velocity of water flowing out of the hole is
A. Independent of h
B. Proportional to h1/2
C. Proportional to h
D. Proportional to h2

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