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

What are the SI base units of the coefficient of viscosity

Question # 2

When weight of an object falling freely becomes equal to the drag force, then the body will move with

Question # 3

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

Question # 4

Where the streamlines are very close to each other, the pressure will be

Question # 5

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

Question # 6

When a water droplet falling freely through air, the drag force on water droplet increases with th

Question # 7

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

Question # 8

According to the Bernoulli's theorem the pressure velocity are

Question # 9

Under normal circumstances, the volume of blood is sufficient to keep the vessels

Question # 10

At high altitude the blood oozes out of the nose and ear because

Question # 11

A body is floating in a liquid. The up thrust on the body is

Question # 12

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

Question # 13

Blood pressure is measured by the instrument

Question # 14

Ball pen functions on the principle of

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 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
2 In Bernoulli's theorem the relation between velocity and pressure is
A. Inverse
B. Direct
C. None of the above
D. Both a and b
3 If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity
A. v/A = constant
B. A/v = constant
C. Av = constant
D. None
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 Which of the following has the greatest coefficient of viscosity?
A. water
B. gasoline
C. honey
D. tar
6 How much force is required to slide one layer of the liquid over the other layer is measured by
A. friction
B. density
C. viscosity
D. resistivity
7 Which of the following is a characteristic of an ideal fluid?
A. it is non-viscous
B. it is incompressible
C. it's motion is steady
D. all of the above
8 Ball pen functions on the principle of
A. Viscosity
B. Boyle's law
C. Gravitational force
D. Surface tnesion
9 The mass of fluid passing through any cross-section per unit time is called
A. electric flux
B. magnetic flux
C. mass flux
D. none of them
10 Bernoulli's equation is applicable for
A. turbulent flow
B. streamline flow
C. both (a) and (b)
D. all kinds of flows

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