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 equation of continuity is

Question # 2

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

Question # 3

The rain drop falling from the sky reach the ground with

Question # 4

The unit of viscosity is SI system is:

Question # 5

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

Question # 6

Density of fluid is defined as:

Question # 7

N s m-2is unit of:

Question # 8

The body will move with terminal velocity when it acquires

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with

Question # 13

The law of conservation of mass gives us the

Question # 14

A container has a small hole in the bottom. Air can go through this hole,but water cannot. This can be best explained by the statement that

Question # 15

Deep water almost runs still when surface water flow in rivers. What does it explains

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 The value for systolic blood pressure for a normal healthy person is
A. 140 torr
B. 80 torr
C. 90 torr
D. 120 torr
3 Surface tension of water is reduced by adding
A. Detergents
B. Camphor
C. Plastic
D. Both A and B
4 Which of the following options states the names of fluids in the order of increasing viscosity?
A. mercury, motor oil, methanol
B. methanol, mercury, motor oil
C. motor oil, mercury, methanol
D. methanol, motor oil, mercury
5 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows
6 The density of blood is nearly equal to that of
A. mercury
B. sodium
C. water
D. honey
7 Bernoulli's equation is based upon law of conversation of
A. mass
B. momentum
C. Energy
D. None
8 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
9 The drag force acting on a spherical droplet of radius 10-5m moving with a velocity of 1 cm/sec in a fluid of velocity 5.31 x 10-7m/sec. The units comes out to be:
A. 10-16N
B. 10-14N
C. 10-12N
D. 10-10N
10 Fluid A is more viscous than fluid B. While flowing through a pipe of the same dimensions and material which fluid takes longer to travel at 25°C?
A. fluid B
B. fluid A
C. both take the same time
D. not possible to determine from given information

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