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

Stock's law holds for:

Question # 2

Bernoulli's equation is applicable for

Question # 3

Surface tension of water is reduced by adding

Question # 4

The mass of fluid passing through any cross-section per unit time is called

Question # 5

According to Stoke's law, drag force depends on

Question # 6

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

Question # 7

Blood vessels can be stretch like rubber, therefore they are

Question # 8

An object moving through a fluid experiences a retarding force called a

Question # 9

Rate of flow can be expressed in

Question # 10

The law of conservation of energy gives us

Question # 11

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

The terminal velocity of a small size spherical body of radius R moving in a fluid varies as

Question # 15

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

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 One torr is equal to
A. 13.33 N/m2
B. 760 N/m2
C. 760 mm Hg
D. 133.3 N/m2
2 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
3 A massive object falls through a fluid:
A. Faster
B. Slower
C. Slowest
D. None
4 Viscosity of water is ______ that of air but ___ that of plasma.
A. More, more
B. Less, more
C. Less, less
D. More, less
5 An object moving through a fluid experiences a retarding force called a
A. frictional force
B. terminal force
C. opposing force
D. drag force
6 Terminal velocity is the maximum velocity attained by a spherical droplet when the drag force______the weight of droplet:
A. Is smaller than
B. Is greater than
C. Becomes equal to
D. None of these
7 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
8 Fog droplets are suspended in air when their weight is balanced by:
A. Force of gravity
B. Upward trust due to air
C. Surface tension
D. None of these
9 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
10 According to the Bernoulli's theorem the pressure velocity are
A. equal to each other
B. proportional to each other
C. inversely proportional to each other
D. none of them

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