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 instrument which detects the instant at which external pressure becomes equal to the systolic pressure is

Question # 2

The law of conservation of energy gives us

Question # 3

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

Question # 4

Pressure exerted by a gas on the walls of its container in due to

Question # 5

In a normal healthy person the value of systolic pressure is

Question # 6

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

Question # 7

The pressure will be low where the speed of the fluid is

Question # 8

According to Stoke's law, drag force depends on

Question # 9

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

Question # 10

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

Question # 11

The pressure will change in the pipe, as the fluid moves through that pipe of varying

Question # 12

When the velocity of a liquid flowing steadily in a tube increases, its pressure?

Question # 13

When a fluid is in motion, its flow can be considered as

Question # 14

If v is the velocity of flow of liquid through a tube of area of cross-section A, then according to equation of continuity

Question # 15

Which of the following is a characteristic of an ideal fluid?

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ECAT Physics Chapter 6 Important MCQ's

Sr.# Question Answer
1 Stock's law holds for:
A. Motion through free space
B. Motion through viscous medium
C. Bodies of all shapes
D. None of these
2 The electrical forces between the molecules of a liquid are
A. Repulsive
B. Attractive
C. Both A and B
D. None
3 If the flow is incompressible and the flow is steady then the mass of the fluid through the pipe
A. increases
B. decreases
C. becomes zero
D. is conserved
4 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
5 The instrument which detects the instant at which external pressure becomes equal to the systolic pressure is
A. stethoscope
B. thermometer
C. manometer
D. barometer
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
A. 20
B. 200
C. 2000
D. 20,000
7 Fluids resist force, This property is called
A. Stiffness
B. Strength
C. Ductility
D. Elasticity
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 Fluids have three types of energies. The Bernoulli's equation combines those energies.which of the following is one of the three enrgies possessed by a fluid?
A. potential energy
B. pressure energy
C. strain energy
D. (a) and (b) only
10 During the free fall motion of an object, when its weight becomes equal to the drag force, then it will move with
A. maximum speed
B. zero speed
C. maximum speed
D. none of them

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